Amnart Khampanit

King Mongkut's University of Technology Thonburi | KMUTT · Department of Civil Engineering

This article presents strengthening method for the overloaded reinforced concrete slabs by using External Post-Tensioning (EPT) technique. The authors summarizes the guidelines for strengthening design, analyzing and evaluating structures, installation procedures for strengthening the slabs, and the expected results achieved after the strengthening...

The purpose of this research is to study and analyze the seismic behavior of a full-scale interior slab-column connection specimen. The post-tensioned flat slab was installed by 8 bonded tendons, which pre-compression equals to 2. 3 MPa, and shear reinforcements, i.e., stud rails to protect punching shear, were placed in an orthogonal layout accord...

This study focuses on estimating inelastic deformation demands for non-ductile RC frames strengthened with BRBs or similar metallic devices. The hysteretic behavior of a combined RC-BRB system depends on the relative strength and stiffness of the RC frame and the BRBs. The behavior could be dominated by the pinched hysteretic behavior of the non-du...

This paper presents the application of an energy-based seismic design procedure to strengthen non-ductile reinforced concrete frames using buckling-restrained braces. An experimental study was conducted to examine the seismic behavior of a large-scale non-ductile RC specimen strengthened with BRBs. For the analytical study, a large number of dynami...

Department of Rural Roads has more than 47,000 kilometers of road under its responsibility. The road maintenance cost each year is over 8,100 million baht. One of the major causes of road damaged comes from a number of overloaded trucks. This leads to the establishment of the weigh stations to control the overloaded trucks, and protect the rural ro...

This paper presents an application of the performance-based plastic design approach for the design of buckling-restrained braces to strengthen a non-ductile reinforced concrete frame with a soft-story mechanism. The selected building is a 5-story school structure that was designed primarily for gravity loads. An inelastic pushover analysis was perf...

Cyclic tests of a soft story RC frame structure and their analyses were carried out. The test specimens were RC frame with infill wall, RC bare frame with steel jackets, and RC frame with buckling restrained braces (BRBs). The hysteretic loops of the specimen with BRBs were very stable with almost no pinching in the response. Though the results ind...

The Department of Rural Roads, Thailand, is responsible for managing rural roads and their assets to ensure safe and pleasurable conditions for travelers. Annually, the department spends more than 10,000 million Baht for conducting road maintenances. It has been identified that one of the major causes of road damages is a result of the operations o...

This paper presents the cyclic test results of a non-ductile reinforced concrete frame strengthened with buckling restrained braces (BRBs). The specimen consisted of a one-bay, half-scale, RC frame with infill wall. The specimen was tested in three phases. In the first phase, the specimen with infill wall was tested until failure under the quasi-st...

This research involves the development and the experimental study of steel buckling-restrained braces (BRBs) for earthquake resistant design and seismic retrofitting applications. BRBs are widely used seismic resistant elements that provide stable force-displacement response enabling yielding in both tension and compression. This study includes the...