Parameter Analysis of Seismic Performance of Hollow Thin-walled Steel-box Concrete Pier(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2019年01期
- Page:
- 101-111
- Research Field:
- Publishing date:
Info
- Title:
- Parameter Analysis of Seismic Performance of Hollow Thin-walled Steel-box Concrete Pier
- Author(s):
- ZHANG Guo-jing; LIU Yong-jian; HOU Bei-bei; WANG Can
- School of Highway, Chang’an University
- Keywords:
- hollow thin-walled steel-box concrete pier; seismic performance; hysteresis curve; stiffness degradation curve; hysteresis skeleton curve
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to clarify the seismic performance of hollow thin-walled steel-box concrete pier, the finiteelement software OpenSees was used to establish finite element model and the calculation results were compared with the test results to verify the validity of the model. On the basis of the work above, the hollow thinwalled steelbox concrete pier models were established, the changing laws of hysteresis curve, stiffness degradation curve and hysteresis skeleton curve of those models were analyzed with different axial compression ratio, lengthdiameter ratio, hollow ratio and steel ratio of the section, compressive strength of concrete and yield strength of steel. The results show that the hollow thinwalled steelbox concrete pier has good seismic performance. The axial compression ratio and lengthdiameter ratio have great influences on the seismic performance of hollow thinwalled steelbox concrete pier. It is suggested that the axial compression ratio of hollow thinwalled steelbox concrete piers should be controlled at about 0.5 and the lengthdiameter ratio should be minimized within a reasonable range. The section hollow ratio and section steel content have certain influence on the seismic performance of hollow thinwalled steelbox concrete piers. Within a certain range, increasing the hollow ratio and steel content can improve the seismic performance of pier. The influence of material strength grade on the seismic performance of hollow thinwalled steelbox concrete pier is relatively small. The seismic performance of hollow thinwalled steelbox concrete pier can be improved slightly by weakening the compressive strength of concrete and increasing the yield strength of steel. The research results have certain guiding significance for the application of hollow thinwalled steelbox concrete pier in engineering practice.
Last Update: 2019-01-23