The proportion of the coal and rock masses in different areas surrounding rocks is quite when a large-section roadway excavated gently inclined soft seams. Different creep failure occurs under high stress, which results uneven deformations roadways difficulties maintenance. This work studied belt grooves 2103 working face lower group Wulihou Coal Mine. Theoretical analysis measured geomechanica...

This paper is intended to examine the efficiency of utilizing FRP composite material with an externally bonded technique in enhancing behavior damaged B-C joints and controlling their failure mode using NLFEA approach. At first, modeled Beam-Column joint was validated as per previously-attained experimentally-attained results. Later, model widened experiment impact axial-column load concrete co...

Building fire is one of the most frequent disasters. The mechanical properties concrete and steel will deteriorate to different degrees under exposure, thus weakening bearing capacity reinforced (RC) members. Therefore, it great theoretical practical significance carry out research on RC members subjected fire. To study residual shear post-fire beams indirect loading, static load tests were car...

In this paper, a new combined form of Glass Fiber Reinforced Plastic (GFRP) column and steel fiber mortar reinforced damaged Concrete (RC) is proposed. With the help ABAQUS finite element software, model GFRP tube RC established. Based on experiment strengthening column, parameters such as winding angle tube, strength section loading mode are studied by numerical simulation. The results show th...

The necessity of ensuring the long-term sustainability existing structures is rising. An important issue concerning reinforced concrete (RC) in seismically active regions that a significant number them lack required earthquake-resistant capacities to meet increased design earthquake demands. Inexpensive, fast and strengthening strategies for repairing/strengthening RC are urgently required, not...

Many steel structures are in need of strengthening due to reqUirements to increase carrying capacity and/or rehabili tation due to corrosion degradation. This paper summarizes the results of an investigation that has been conducted to evaluate the performance of carbon fiber reinforced polymer (CFRP) materials to increase the strength and stiffness of steel structures. Two types of specimens we...

Fiber reinforced polymer materials are continuing to show great promise for using strengthening reinforced concrete structures. These materials are an excellent option for use as external reinforcing, because of their light weight, resistant to corrosion and high strength. The main aim of this study is to investigate the flexural characteristic of RC beams using GFRP sheets and strips. This pap...

The problem of damage accumulation in fiber-reinforced concrete to structures supporting underground workings and tunnel linings against dynamic loading is insufficiently studied. mechanical properties were determined the mechanism destruction with different reinforcement parameters described. Concrete Damaged Plasticity model for at are based on results lab experiments. Numerical simulation co...