- 摘 要
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（中國建筑科學(xué)研究院 北京 100013）
【提要】 根據(jù)某深基坑工程實測的支護樁樁身鋼筋應(yīng)力，分析了在不同工況下支護樁的內(nèi)力特性及其
變化規(guī)律，揭示了冠梁與支護樁之間存在的協(xié)同作用。根據(jù)實測應(yīng)力推求的彎矩與按理論計算的彎矩對比發(fā)現(xiàn)，實測求得的彎矩與采用彈性支點法計算的結(jié)果吻合較好，與極限平衡法計算的結(jié)果差別較大。
【關(guān)鍵詞】 深基坑 支護樁 冠梁 現(xiàn)場測試 內(nèi)力 彎矩
Field Test Research on Internal Force of Retaining Pile for Deep Excavation/Wang Jianjun, Huang Qiang(China Academy of Building Research, Beijing 100013，China)
Abstract:Based on the measured reinforcement stress in the retaining pile for a certain d
eep excavation, behavior and changing pattern of internal force are studied under different conditions. Then cooperative action between top beam and retaining pile is disclosed. Contrastive analysis of bending moments of retaining pile shows that the results by using the measured rebar stresses coincide with those calculated through elastic fulcrum method, while are quite different from those obtained by limit equilibrium method.
Keywords:deep excavation; retaining pile; top beam; field test; internal force; bending moment
