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Study on Seismic Performance of Circular Steel Bridge Pier with Partially Concrete Filled

Author: LiaoJing
Tutor: BaoLongSheng；WangZhanFei
School: Shenyang University of construction
Course: Bridge and Tunnel Engineering
Keywords: Partially filled with concrete Bridge Seismic performance Ductility Substructure
CLC: U441
Type: Master's thesis
Year: 2011
Downloads: 88
Quote: 0
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Abstract


The steel concrete piers has high bearing capacity , bending stiffness , convenient construction , the more and more attention by the engineering community . So far, the seismic performance of steel concrete piers extensive experimental research , but mostly filled with concrete in the form of partially filled steel pipe the concrete piers column seismic performance is relatively small . In this paper, based on analysis of home and abroad partially filled circular steel concrete pier Research and engineering applications , a of eight partially filled circular steel columns of concrete piers low cyclic loading tests . Consider concrete fill rate test , the diameter to thickness ratio and the slenderness ratio of the three factors ; analysis of the hysteretic behavior of components under load bearing capacity and deformation capacity , stiffness degradation and energy dissipation capacity ; compare different test the impact of the parameters of the test results . Experimental results show that the partially filled circular steel concrete piers with suitable fill rate hysteresis curve full, no pinching ; deformation capacity has reached its limit load , displacement ductility coefficient from 3.25 to 4.22 , meet ductility component requirements ; stiffness degradation gentle , strong energy dissipation capacity ; to illustrate partially filled circular steel concrete piers column has a good seismic performance . Through analysis , the the concrete fill rate component seismic performance most significantly , this paper, partially filled circular steel concrete piers range of optimal concrete filling rate . Seismic performance study applications based on the the OpenSees substructure pseudo-dynamic test methods partially filled circular steel concrete piers . The tests showed that the substructure pseudo dynamic test through test on a particular part of the bridge , and to understand the characteristics of the force of the entire bridge structure . Have conceptual clarity , accurate load , can correct analysis of the mechanical properties of sub- structures under nonlinear conditions . The TDAP Ⅲ bridge seismic Software can simulate a full-bridge model the mechanical properties of the bridge , and the test results are in good agreement with the role of small earthquakes , earthquake and earthquake . The results of this research can provide a reference for partially filled circular steel concrete piers engineering practice .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics
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