圆形人工挖孔桩护壁厚度分析
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摘要
人工挖孔桩在我国现有设计施工技术条件下仍是重要的桩基类型之一,但近年来人工挖孔桩护壁破坏造成塌孔的施工事故时有发生,护壁厚度不足可能是造成塌孔的主要原因之一。文章分析了传统人工挖孔桩护壁厚度设计时土压力取值、护壁厚度计算模型、材料设计强度取值三方面存在的问题,提出了切实有效的圆形挖孔桩护壁厚度设计计算方法。
The artificial digging pile is still one of the important types of pile foundation under the existing design and construction technology conditions in China. However,in recent years,the collapse accidents caused by the destruction of the retaining wall of Manual Excavated Piles often occur,and the insufficient thickness of the retaining wall may be one of the main reasons for the collapse of the retaining wall This paper analyzes the problems of soil pressure value,wall thickness calculation model and material design strength value when designing traditional artificial digging pile retaining wall thickness,and effective calculation method for wall thickness design is proposed.
The artificial digging pile is still one of the important types of pile foundation under the existing design and construction technology conditions in China. However,in recent years,the collapse accidents caused by the destruction of the retaining wall of Manual Excavated Piles often occur,and the insufficient thickness of the retaining wall may be one of the main reasons for the collapse of the retaining wall This paper analyzes the problems of soil pressure value,wall thickness calculation model and material design strength value when designing traditional artificial digging pile retaining wall thickness,and effective calculation method for wall thickness design is proposed.
引文
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[2][苏联]В.Г.别列赞采夫,结构物地基强度的计算[M].张士文,译.北京:中国工业出版社,1965.
[3]付馨,胡威东.人工挖孔桩护壁受力机理及设计方法探讨[J].山西建筑,2011(17).
[4]建筑施工手册编写组.建筑施工手册(第五版)[M].北京:中国建筑工业出版社,2013.
[5]何珊珊,王贤能.人工挖孔桩护壁计算及研究[J].土工基础,2016(6):3-30.
[6]徐芝纶.弹性力学简明教程[M].北京:高等教育出版社,2018.
[7]上海市政工程设计院.给水排水结构工程结构设计手册[M].北京:中国建筑工业出版社,2012.
[8]JGJ94-2008建筑桩基技术规范[S].北京:中国建筑工业出版社,2008.
[9]余宗明.按混凝土强度龄期曲线推算混凝土早期强度[J].施工技术,1994(10).
[10]全国一级建造师执业资格考试用书编写委员会.市政公用工程管理与实务[M].北京:中国建筑工业出版社,2018.
[11]GB50010-2010混凝土结构设计规范(2015年版)[S].北京:中国建筑工业出版社,2015.