| Prefabricated building is one of the directions of future architecture development.In the current context of sustainable development,prefabricated building can reduce energy consumption and environmental pollution in the construction process,which meets the requirements of low-carbon economy.At the same time,with the rapid development of urbanization,the demand for housing is also increasing.prefabricated building can improve construction efficiency and speed up housing construction to meet housing demand.This thesis mainly studies a new prefabricated shear wall system applicable to lowrise buildings.The horizontal members of the structural system are connected by soft cables,and the vertical members are connected by dowels.his subject studies the anchoring performance of the embedded and post-cast forms of the soft cable in the soft cable connection joints,verifies the rationality and feasibility of ABAQUS numerical simulation through the comparison of tests and simulations,and compares and analyzes the difference of the seismic performance between the cast-in-place shear wall and the soft cable shear wall,and studies its seismic performance through the numerical simulation of the seismic response of the whole building.The details are as follows:1.In order to study the anchoring performance of soft cable nodes,two different forms of specimens were designed for axial pull-out tests.The tests found that the failure of the specimens was due to the breakage of the steel wire rope of the soft cable,and there was no phenomenon of the soft cable being pulled off.This indicates that the soft cable meets the requirements for pull-out bearing capacity and the anchoring form is reliable.2.This article designs one cast-in-place shear wall and two soft cable node shear walls,and conducts low cycle reciprocating tests on three walls to observe the experimental phenomena and summarize the differences in the failure forms of the two types of walls.And analyze the experimental data such as hysteresis curve and skeleton curve,and compare the seismic performance differences between the two types of walls.Research has found that the damage location of cast-in-place shear walls is mainly at the edge of the main wall,while the damage of soft cable walls is important at the node position.Soft cable shear walls have good reliability,and increasing the number of soft cables appropriately can delay the development of cracks and reduce the number of cracks.3.The finite element software ABAQUS was used to conduct finite element simulation verification on specimen SW-1 and specimen SW-2 during the early seismic performance test of shear walls in our research group.By comparing the simulation results with the seismic performance indicators such as skeleton curves,bearing capacity characteristic values,and deformation in the test results.The study found that the simulated and experimental curves were in good agreement,and the yield load and peak load obtained by simulating two shear walls had smaller errors compared to the experimental results.4.A model of prefabricated slab house with soft cable connection is established,and the ground motion response is simulated by ABAQUS.The acceleration response,displacement response and failure mode are obtained under different peak accelerations.The damage position of the structure is analyzed in the stress nephogram and the damage diagram.The structure is loaded by using different seismic waves under the same peak acceleration,The structural damage curve is obtained to study the seismic wave which is close to the structural vibration frequency. |
