工字型预应力混凝土围护桩受力性能探索  

EXPLORAYION OF STRESS PERFORMENCE OF I-SHAPED PRESTRESSED CONCRETE PILE FOR PIT MAINTENANCE

作　　者：卓宁[1] 严平[1] 

机构地区：[1]浙江大学建筑工程学院,杭州310058

出　　处：《低温建筑技术》2012年第3期90-92,共3页Low Temperature Architecture Technology

摘　　要：预应力混凝土围护桩用于基坑围护有其独特的优越性,但是此桩作为临时性的大变形构件,本身的受力性能与普通的受弯、受剪构件有所区别,本文将对此桩适用的理论模型、挠度和裂缝的约束、异号时变弯矩对抗剪性能的影响等问题进行探索研究。There are special advantages for the application of new I-shaped prestressed concrete pile in pit maintenance. However, the pile. , as a temporary and large deform constructional element , has a distinguish stress performance in flexural property and shear property with common beam. We will research and explore the problems, such as the suitable theoretical model for pile , the restraint of deflection and crack and the influence to shear property due to opposite time varying bending moment and so on.

关 键 词：拉压杆模型 裂缝 异号时变弯矩 

分 类 号：TU473.13[建筑科学—结构工程]