基于水平土拱效应的排桩支护结构合理桩间距的研究  

The study of proper piles spacing in row piles retaining and protecting structure based on horizontal soil arching effects

作　　者：郭院成[1] 郭呈祥[2] 叶永峰[3] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]濮阳职业技术学院,河南濮阳457000 [3]同济大学地下建筑与工程系,上海200092

出　　处：《四川建筑科学研究》2008年第4期136-139,共4页Sichuan Building Science

基　　金：河南省自然科学基金资助项目(0611010300)

摘　　要：在对排桩支护结构间水平土拱效应分析的基础上,给出了一种新的成拱桩间距计算模型,提出应在引入普氏理论的前提下,以桩间静力平衡条件、跨中截面强度条件以及拱脚处截面强度条件共同控制来确定桩间距。经过理论分析,推导出了桩间距、拱高和拱厚的计算公式,最后,通过工程算例证明本文算法的合理性。On the basis of analyzing horizontal soil arching effects of row piles retaining and protecting structure, a new computation model of piles spacing was proposed which argues that piles spacing should be determined jointly by conditions for the balance of static force equilibrium between slope thrust on the soil arch and resistance on its two end sections near the two piles, intensity condition for the cross-section of the middle of the soil arch and the intensity condition for the cross - section of the feet of the soil arch under the premise of the theory by M.M. ROMOJIYFAKONOV. The computation formula of piles spacing, piles height, and piles thickness were deduced and validated by engineering examples.

关 键 词：排桩支护 土拱效应 桩间距 

分 类 号：TU473[建筑科学—结构工程]