Cheng-hua Shi

Cheng-hua Shi

About

81
Publications
11,452
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1,038
Citations
Citations since 2017
45 Research Items
957 Citations
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300

Publications

Publications (81)
Article
Water leakage has become the main defect that affects the safe operation of shield tunnels in the saturated stratum. Long-term leakage is proven to change the load distribution and stress state of the tunnel lining, which hampers the structural performance of the tunnel. This paper proposes a novel numerical approach to simulate the localized leaka...
Article
This study proposes a comprehensive Vlasov foundation-Timoshenko beam model with arbitrary elastic boundary conditions by introducing the translational and rotational restraining springs. The difference solutions for the responses of the beam subjected to arbitrary distributed loads are strictly deduced considering spatial soil variability, thereby...
Preprint
Full-text available
Layered shale is a kind of rock with obvious anisotropy. Its dip angle considerably influences rock deformation, failure model, and internal fracture distribution. In this study, the shale samples with different bedding dips were subjected to triaxial compression tests to explore the anisotropy properties. A numerical approach based on three-dimens...
Article
The longitudinal equivalent bending stiffness (LEBS) is a key parameter of the longitudinal equivalent continuous model (LECM) of shield tunnels. When the incorporating combined actions of axial force and bending moment, i.e., N-M actions, is considered, the LEBS exhibits a significant nonlinearity. In this study, to reflect the actual action range...
Article
Shield tunnel is usually treated as an underground permanent facility with a design service life of 100 years, its bearing capacity and service performance has attracted extensive attention. Previous studies on the mechanical behavior of shield tunnel are mostly carried out within the framework of elastic or elastoplastic theories. However, when th...
Article
Full-text available
Graduation project (thesis) is an important practice part in undergraduate education, which forms an organic whole with theoretical teaching link, and it is the continuation, deepening and examination of the theoretical teaching part. This paper focuses on the constitution that the lack of quality standards for undergraduate graduation design, resu...
Article
Full-text available
In order to effectively prevent the spread of novel coronavirus pneumonia and ensure the orderly development of teaching tasks, colleges and universities have launched online teaching activities. As a new teaching method, how to reasonably carry out teaching design, teaching organization and ensure teaching quality has become a new problem in front...
Article
When a shield machine moves along a curved alignment or corrects a deviation, the asymmetric thrust of the propulsion cylinder generates an additional bending moment at the front end of the tunnel. This yielding moment causes the longitudinal deformation of the tunnel, the dislocation between adjacent segmental rings, and other structural defects....
Article
This paper reports a collapse accident of slope instability at the entrance of Taizhen Tunnel in Qujiang Section of Hangxinjing Expressway in China. The landslide instability mechanism was studied by field observation and testing. Considering the stability of the landslide and the disturbance effect of secondary tunneling construction, comprehensiv...
Article
Full-text available
Rubber gaskets are commonly adopted as the waterproof component in shield tunnels for their outstanding sealing performance. The contact pressure between surfaces generated by the assembly stress ensures that the gaskets resist certain water pressure without leaking. However, with the continuous occurrence of leakage accidents, attention has been d...
Article
Full-text available
Based on the project of People’s Hall Station of Qingdao Metro Line 4 in China, the method of water-sealed blasting construction for vibration damping is proposed, as the blasting vibration of adjacent structures (Qingdao Metro Line 3) does not meet the control requirements during the blasting construction of the existing site blasting scheme. The...
Article
Most of the existing studies on seismic active earth pressure evaluation use a pseudo-static method to consider seismic actions and are carried out under two-dimensional conditions. However, the pseudo-static approach characterizes the earthquake acceleration as a constant, which is a simplified mode and neglects some crucial seismic inputs. Additi...
Article
The Dongping No.1 Tunnel of the Guangdong–Foshan Loop Line Intercity Railway in China passes an existing large-scale underground pipe gallery in water-rich sandy strata through the undercutting method. During construction, controlling the underground pipe gallery deformation is difficult because the water-rich sandy strata can easily become unstabl...
Article
Shield tunnels with great longitudinal differential deformations will adversely affect the service performance and optional safety of the metro system. Previous studies on the longitudinal mechanical behavior of shield tunnel are mostly carried out within the framework of elastic or elastic–plastic theory. However, assuming the concrete as elastopl...
Article
Full-text available
At present, jet-grouted horizontal waterproof curtain reinforcement has become an essential method for deep foundation pit groundwater control. However, there is still a lack of an effective theoretical calculation method for horizontal waterproof curtain reinforcement, and there is little research on the seepage laws of foundation pits under diffe...
Article
This study reports an investigation on transfer station cracking induced by cutting anchor cables at North Yuehu Park station in Changsha city through both field monitoring and numerical simulation. The incident was triggered by cutting part of the original anchor cables while excavating a deep groove for an entrance diaphragm wall. When part of th...
Article
Full-text available
The problems faced by subway stations in the construction process are more complex than those by overground buildings. Therefore, the construction risk for such structures is highly unpredictable and the risk management is difficult. Building information modeling (BIM) technology has strong visualization, simulation, and integration characteristics...
Article
Adjacent construction of soil excavations will adversely affect the service performance and optional safety of existing shield tunnels. Previous relevant studies on the excavation–induced responses of shield tunnel are mostly carried out within the framework of elastic or elastoplastic theory, despite the concrete inherent nonlinear damage mechanic...
Article
Structural health monitoring (SHM) combined with digital image technology has been widely applied to infrastructure operation management. However, the linear illumination of the tunnel and the various lining diseases limit the quality of lining-crack recognition. In this article, a novel tunnel-lining crack recognition system is established. The sy...
Article
Full-text available
This paper presents a case study of groundwater control for a deep excavation into confined aquifers in Fuzhou, China. Field pumping tests were first carried out prior to the excavation to investigate the groundwater conditions at the site and as well as to evaluate the feasibility of previous designed dewatering systems (34 m diaphragm walls toget...
Article
Full-text available
Impact loads widely exist in practical engineering and often cause cumulative damage and cracks or even fracture failure of concrete structures with their repeated long-term action. This experimental research is conducted on the damage evolution characteristics of concrete under impact loads by regarding C50 nonreinforced concrete as the research o...
Article
Full-text available
Tridimensional cross tunnels usually manifest the vulnerable components of a high-speed railway caused by the sophistication of the structural pattern and the continuous shock from the train. The frequent defect of tunnel lining at the intersection would affect the safe operation of the two rails. As a result, attention has been paid to fatigue dam...
Article
Owing to the rapid growth of urban population and fast developments of urbanization, new pit excavations are inevitably conducted in close proximity to existing structures, which will cause additional displacement and internal force to piles in turn adversely impact the surrounding structures. Thus, it's a major challenge to reasonably predict the...
Article
Full-text available
The crossing area is a vulnerable component of the interchange high-speed railway tunnel because of the high-static stress level and the long-term dynamic train load in the operation period. Although attention has been paid to this problem, the response characteristics of high-speed railway tunnel lining at the cross position under the dynamic trai...
Article
Adjacent excavations may adversely impact existing shield tunnels. Therefore, evaluating the induced responses of existing tunnels is critical. Previous analytical methods have generally treated shield tunnels as Euler–Bernoulli or Timoshenko beams resting on Winkler or Pasternak foundations to simulate tunnel–soil interactions. However, these meth...
Article
Full-text available
Sudden variation of aerodynamic loads is a potential source of safety accidents of high-speed trains (HSTs). As a follow-up investigation on the aerodynamic response of a HST that enters a tunnel under crosswind environment, this paper focuses on the transient response of a HST’s safety indices based on the train–track coupling interaction model. F...
Preprint
Sudden variation of aerodynamic loads is the potential source of safety accidents of high-speed train (HST). As a follow-up investigation on the aerodynamic response of a HST that enters a tunnel under crosswind environment, this paper focuses on the transient response of a HST’s safety indices based on the train–track coupling interaction model. F...
Article
Full-text available
With the rapid development and construction of China’s transportation system, more and more projects are being conducted near existing buried pipelines, which will inevitably influence the safety of the pipelines. Among the safety issues related to buried pipelines, blasting during the construction of an adjacent tunnel is one of the most adverse f...
Article
Full-text available
Friction resistance usually constitutes one of the two main components for the calculation of required jacking force. This paper provides a new approach to predict the friction resistance of slurry pipe jacking. First, the existing prediction equations and their establishment methods and essential hypotheses used were carefully summarized and compa...
Article
Full-text available
This paper performs an extensive literature survey and example investigation on the stabilisation of slurry wall trenches during the construction of diaphragm wall panel trenches, and the failure modes of slurry wall trench instability, the stability theoretical analysis models and methods, the slurry formation and its protection mechanism, the inf...
Article
Full-text available
The Haoji railway in China is the longest heavy haul railway in the world, including 235 tunnels located along the 1837 km railway. With the increasing axle load of the new line and the basal deterioration of the existing heavy haul railway in China, studying the fatigue performance of the newly designed tunnel structure is essential. To study the...
Article
Full-text available
The dewatering of deep foundation pits excavated in highly permeable geology usually requires waterproofing technologies to relieve groundwater flow. However, no effective prediction formula is yet available for determining water inflow in the presence of partial penetrating curtains. In this study, a dewatering project with partial penetrating cur...
Article
Full-text available
Dewatering using the dewatering systems composed of diaphragm walls and pumping wells is commonly adopted for deep excavations that are undertaken in deep aquifers. However, dewatering can sometimes induce environmental problems, especially when diaphragm walls cannot effectively cut off the aquifers. This paper mainly presents an innovative excava...
Article
This paper presents a simplified methodology for the design of jet-grouted bottom sealing barriers (temporary water-tightness structures) for deep excavations that was undertaken in deep aquifers. The bottom sealing barriers are usually required to prevent uplift failure against the water head below. Additionally, jet-grouted bottom sealing barrier...
Article
Full-text available
A series of problems, including large deformation of supporting structures, shotcrete peeling, and yielding of the steel frame, occurs constantly during tunnel construction in soft clay layers. These problems considerably raise the risk of tunnel construction. Thus, the deformation characteristics of soft clay around the tunnel during construction...
Article
Although the sealant performance of segment joints has an important influence on the durability of shield tunnels, it is rarely discussed theoretically. In this study, sealant performance tests of segment joints were designed and conducted on the basis of the stress and deformation characteristics of segment joints of a metro tunnel. The sealant pe...
Article
Full-text available
A heterogeneous equivalent beam model (HEB model) of the shield tunnel segment structure is proposed based on a systematical analysis on the stress state of the cross section of segment joints. is model treats a noncontinuous segment structure as a continuous heterogeneous structure, on the basis of the principle of equivalent stress state on a sec...
Article
Hongmian Road goes under Jihe highway by the way of tunnel in Shenzhen City, Guangdong Province, China. The tunnel has some special characteristics such as shallow depth, large span, soft soil, busy traffic, and long distance under-crossing the operating highway, thus there is great difficulty and risk during its construction. A series of in-situ t...
Article
The Laodongshan Tunnel, as a part of Guangtong-Kunming railway in China is one of the most important connections in the whole railway line. The large deformation and failure of primary support occurred in the early tunneling stage, and deformation characteristics and failure causes of primary support were obtained by means of field investigation an...
Article
It’s inevitable that, various types of construction works emerge within proximity during the large-scale construction of urban rail transit, thus posing huge challenges for the actual construction. In this paper, a minute study on the construction risk control of shield tunneling beneath the existing railroads relying on a practical engineering is...
Article
Full-text available
For the purpose of investigating lining concrete durability, this study derives a modified chloride diffusion model for concrete based on the odd continuation of boundary conditions and Fourier transform. In order to achieve this, the linear stress distribution on a sectional structure is considered, detailed procedures and methods are presented fo...
Article
The construction of underwater tunnels has become a major method for enabling transportation across rivers in cities. In this paper, several innovative ideas and methods adopted in the construction of the Yingpan Road Underwater Tunnel in Changsha, China were introduced. On the basis of the crossing function of traditional underwater tunnels, an un...
Article
The ground movement induced by the construction of shield tunnels affects the safety of nearby underground pipes and aboveground structures. Therefore, the reliable prediction of ground movement is important. In this paper, a model describing the interaction between soil and an EPB shield used in tunnels is presented, based on the classical elastic...
Article
Reactive Powder Concrete (RPC) has ultra-high strength, toughness and durability. Review studies were focused on the mechanical properties of RPC material and RPC beam. In this paper, the bearing features of RPC columns under eccentric compression with different section dimensions, reinforcement ratios, and conditions of with and without steel fibr...
Article
Design optimization of construction dewatering has important values in protecting the surrounding environment and reducing the engineering cost. The existing dewatering design methods are mostly based on the optimization of pumping rate needed to maintain a stable water level, while the drop and rise of water level are not considered in the estimat...
Article
Based on the similarity theory, a tunnel excavation simulation testing system under typical unsymmetrical loading conditions was established. Using this system, the failure mechanism of surrounding rock of shallow-bias tunnels with small clear distance was analyzed along with the load characteristics. The results show that: 1) The failure process o...
Article
The growth of train axle loads enhances the dynamic response of the invert of a tunnel, and affects the damage behaviour of tunnel invert concrete. This article focuses on the fatigue damage of tunnel invert concrete under a cyclic bending load. The fatigue behaviour of the tunnel invert concrete under multi-directional loading is experimentally in...
Article
When an underwater tunnel constructed via the mining method crosses a fault fracture zone, one of the most important issues to consider is ensuring the stability of its face. Several auxiliary techniques have been adopted in construction; however, the design parameters of these auxiliary measures are mainly determined by experience. In this study,...
Article
Full-text available
Jacking force is one of the key parameters for pipe-jacking engineering, which directly affects the determination of other parameters and the cost. Therefore, its accurate calculation is of great significance. The existing methods for the jacking force have many to be satisfied. To deal with this problem, a new method considering mud slurry thixotr...
Article
According to the change law of pores within concrete under external load, a theoretical model was put forward, which was used to analyze the effect of chloride ion diffusion under load, and the influence equation was derived in accordance with the Fick first law. On the basis of existing tests, mathematical models of diffusion coefficient and surfa...
Article
Full-text available
By combining the results of laboratory model tests with relevant flow rules, the failure mode of shallow unsymmetrical loading tunnels and the corresponding velocity field were established. According to the principle of virtual power, the upper bound solution for surrounding rock pressure of shallow unsymmetrical loading tunnel was derived and veri...
Article
Aimed at common problems emerging in tunnel operation, such as softening and disengagement of surrounding rock, and using a high-speed railway tunnel in surrounding rock of grade V as an example, a relevant dynamic response model for multiple working conditions is established. The influences of rock softening and disengagement on the tunnel's dynam...
Article
Full-text available
An experimental study on the dynamic deformation behaviors of water-rich mudstone under cyclic loading was conducted. The rock samples used in the experiment were collected from a tunnel located at 1030 m under the ground. The increase in the accumulation of irreversible plastic strain for water-rich mudstones under cyclic loadings leads to two dif...
Article
Taking into consideration a shield tunnel’s environmental and mechanical properties, we designed a durability test method for its segment lining under the coupling effect of load and chloride environment (CEL&E). To verify the credibility of the method, we developed an environmental simulation test device and conducted durability tests on specimens...
Article
By analyzing the mechanism of chloride ion erosion in concrete segments, andbased on the Fick second diffusion law, the chloride ion erosion model with variable diffusion coefficients was set up, in which the time, and diffusion depth were taken into consideration comprehensively. The effectiveness and reliability of this model was verified by an a...
Article
A method to calculate the surrounding rock pressure on a shallow buried tunnel was established using linear and nonlinear failure criteria based on Terzaghi failure mode. The modified Terzaghi theory, which was expanded to include complex strata and the corresponding recurrence formulas used to calculate vertical earth pressure, was obtained throug...
Conference Paper
According to the 100m 2 double-line tunnel cross-section which is generally used in high-speed railway of China, this paper develops a tunnel - air - train simulation model, based on the three-dimensional incompressible Navier - Stokes equations and the standard k − ε turbulence model. This model can simulate two situations one is that a single tra...
Article
Based on the nonlinear contact theory and considering the discontinuity of shield tunnel structure, a three-dimensional discontinuous contact model for track bed-segment-surrounding rocks is established by simulating the segment joints and the interaction between the segment and the surrounding rocks as well as the track bed. The mechanical and def...
Article
Adopting the combined method of investigation in-situ and artificial environmental test indoor, the damage mechanism and evolution law of mechanical property of tunnel lining structure suffering sulfate ambient were studied. The results show that the main damage forms of tunnel lining structure effected by occurrence environment, characteristic of...
Article
In view of base diseases of the Dayaoshan Tunnel and on the basis of the plasticity damage constitutive model of concrete, the dynamic calculation model for interaction between tunnel structure and surrounding rock was established to study the influence of base voids on the running safety of vehicles in a railway tunnel. The results indicate as fol...
Article
By using the numerical simulation method, the change process of wind speed when high-speed train running in tunnel was studied, the maximum wind speed and wind pressure at different positions in tunnel were calculated, and then the safety of slide-type and anchor-type catenary in tunnel under the repeated impact pressure caused by train running was...
Article
By means of the in-situ monitoring method, the deformation of bottom structure of tunnel and the stress of concrete and rebars in its inverted arch are tested and analyzed. Under the action of unloading of surrounding rock, the loads of tunnel linings, and the upper surrounding rock auxiliary facilities and train load, the bottom structure of the t...
Article
Through the dynamic triaxial tests on water-rich sandy mudstone, the dynamic strain analysis is made on the water-rich sandy mudstone under cyclic loading, and the influences of dynamic stress, static deviator stress and vibration frequency are analyzed emphatically. The results show that there are two types of cumulative irreversible deformation o...
Article
The changing process and distribution of pressure produced by high-speed trains running through a tunnel were studied with the numerical simulation method. The maximum negative pressures at different positions in a tunnel were calculated. The method for calculating the stability of ditch covers under negative pressures was discussed. The seal index...
Article
Based on the practice of a metro tunnel crossing below ground buildings in Shenzhen soft soils, taking a frame structure residential building for example, a 3D nonlinear constitutive model that consists of the tunnels, surrounding soils, the building and its foundation is established by finite element program MIDAS/GTS. The four conditions of the c...
Article
By use of the dynamic finite element numerical method, the dynamic responses of typical sand layers of the Shiziyang Tunnel under train loading are analyzed. The calculating method of the cumulative deformation of sand layers of the Tunnel under long-term train loading is studied with reference to the calculating method of the cumulative deformatio...
Article
By using the 3-D static-dynamic FEM method, the influencing factors of the static-dynamic character on the tunnel-bridge structure were studied. In calculation process, the interaction of rock, tunnel liner and abutment were considered, the simplified calculating model was put forward according the character of dynamic FEM and its reliability was t...
Article
At present the time effect is not considered in calculation of stratum deformation caused by tunnel excavation and changing of tunnel excavation parameters is even more difficult to be considered in such calculation. In this paper, on the basis of the stochastic medium theory and in view of stratum settlement caused by element excavation and time-s...
Article
According to the research status of construction spatial effects in large-long-deep foundation pit that is mainly focusing on the numerical simulation, but theoretical research is not too many till now. A simplified method for calculating the construction spatial effects of large-long-deep foundation pit in cohesive soil was advanced. The soil laye...
Article
Full-text available
Stability of excavation face is a key problem to shield tunnel construction technology. According to the present situation that the calculation of the limit support force of shield tunnel excavation face is rarely reported, based on the silo theory, a calculation model of the limit support force due to facing-slope construction is put forward by us...
Article
Based on the analysis method of tunnel aerodynamic effect in high speed railway, the train traveling process in subway was simulated and the static pressure evolution in train wagon was studied. Meanwhile, the influences of the air shaft and ventilation system of tunnel sections on the wagon pressure were discussed in detail. The results show that...
Article
Based on the two hypotheses: (1) the force on shield working force is round and well-distribution; (2) the frictional force between the out surface of shield and surrounding soil is also well-distribution; the mechanical calculation model of shield is established by using the classical elastic theory of Mindlin. In this model, the changeable locati...
Article
Now the time effect is not considered in calculating stratum deformation caused by tunnel excavation, and the tunnel construction course is even more not considered in deformation calculation. Based on the stochastic medium theory and according to the stratum deformation caused by element excavation, the stratum deformation time-space united calcul...
Article
With numerical simulation method, the changing process of the carbody pressure on the external surface of the carbody was simulated when trains passing through the tunnel with high speed under the condition of with and without the shaft. The action mechanism of the shaft on the carbody pressure was studied. Based on the changing amplitude of the ca...
Article
Fatigue tests with the scale of 1:2 are carried out on the PMS-500 fatigue test machine to study the fatigue behavior of the tunnel bed under rich water conditions. The occurrence and propagation of fatigue cracks are observed and analyzed, as well as failure modes of the bed. Based on the final vibration times, the fatigue life of the railway tunn...
Article
Based on the stochastic medium theory, the method of stratum deformation calculating considering time-space effect was studied. Multiple working face could be taken into account in tunnel construction at the same time. Then the time-space rules of the stratum deformation caused by different excavation steps, such as face excavation, back excavation...