防灾减灾工程学报2012，Vol.32Issue(5)：573-578,6.
上拔水平力组合荷载作用下混凝土扩展基础承载性能试验
Experiments on Bearing Behavior Concrete Spread Foundation under a Combination Action of Uplift and Lateral Loads
摘要
Abstract
The full-scale indoor test of two spread foundation with same dimensions was carried out separately under uplift alone and uplift combined with horizontal loads in order to observe their bearing capacity and crack expansion regularity. The load displacement of foundation top plane, strain of reinforcing bars and concrete were measured and analyzed. The results show that the uplift load-displacement performance of foundations almost followed the same two-phase pattern in two kinds of load cases. However, under a combination of uplift and lateral load, the lateral displacement linearly increased with the horizontal load. And the lateral load reduces the uplift bearing capacity. The cross-section of the foundation is partially in tensile and partially in compressive stress state respectively. The crack do not break through the whole section. And the maximum tension stress is in the intersection of the foundation pillar and slab. The crack break through the whole section when the foundation is subjected to uplift load only.关键词
混凝土扩展基础/上拔荷载/组合荷载/裂缝扩展Key words
concrete spread foundation/ uplift loads/ combined loads/ crack expansion分类
建筑与水利引用本文复制引用
乾增珍,鲁先龙,童瑞铭..上拔水平力组合荷载作用下混凝土扩展基础承载性能试验[J].防灾减灾工程学报,2012,32(5):573-578,6.基金项目
国家自然科学基金项目(51208480)资助 （51208480）
