基坑排桩支护结构选型的技术经济分析
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摘要
针对某粉土地质条件进行建模,利用弹性地基梁法计算了不同桩间距、桩径、嵌固深度在不同开挖深度等多种组合下的最大水平位移,最大弯矩,最大剪力,以及不同锚杆位置在不同开挖深度下对应的的最大水平位移,最大内侧弯矩、外侧弯矩,最大剪力和锚杆轴力,采用支护结构变形控制标准,通过分析发现其中的规律和技术可行的方案,并进一步结合支护桩常用施工方法与现行定额进行经济分析,寻找经济方案,以提出具有工程指导意义的建议。
Based on silt geological condition,aimed at cantilever pile and pile-anchor,using method of beam on elastic foundation,through multiple combinations of pile spacing,diameter,embedded-depth at different levels of excavation depth,the impaction is discussed on the greatest displacement,maximum bending moment,the largest shear forces of supporting structure,and in different excavation,bolt locations impact on maximum horizontal displacement,the greatest moment of medial and lateral bending moment,the biggest shear force of pile and the axial force of bolt.By deformation control standards of supporting structure,the law and technically feasible program is found.Then combined with construction method of pile and current quota,technical economy is performed to find the economic plan and give suggestion to the project.
Based on silt geological condition,aimed at cantilever pile and pile-anchor,using method of beam on elastic foundation,through multiple combinations of pile spacing,diameter,embedded-depth at different levels of excavation depth,the impaction is discussed on the greatest displacement,maximum bending moment,the largest shear forces of supporting structure,and in different excavation,bolt locations impact on maximum horizontal displacement,the greatest moment of medial and lateral bending moment,the biggest shear force of pile and the axial force of bolt.By deformation control standards of supporting structure,the law and technically feasible program is found.Then combined with construction method of pile and current quota,technical economy is performed to find the economic plan and give suggestion to the project.
引文
[1]中华人民共和国行业标准.JG J120-99.建筑基坑支护技术规程[S].北京:中国建筑工业出版社,1999.
[2]赵志缙,应惠清.简明深基坑工程设计施工手册[M].北京:中国建筑工业出版社,2000.
[3]陈忠汉,程丽萍.深基坑工程[M].北京:机械工业出版社,1999.
[4]秦四清,等.深基坑工程优化设计[M].北京:地震出版社,1998,79-100.
[5]中华人民共和国国家标准.GB J50010—2002.混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[6]中华人民共和国行业标准.JG J94-94.建筑桩基技术规范[S].北京:中国建筑工业出版社,1994.
[2]赵志缙,应惠清.简明深基坑工程设计施工手册[M].北京:中国建筑工业出版社,2000.
[3]陈忠汉,程丽萍.深基坑工程[M].北京:机械工业出版社,1999.
[4]秦四清,等.深基坑工程优化设计[M].北京:地震出版社,1998,79-100.
[5]中华人民共和国国家标准.GB J50010—2002.混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[6]中华人民共和国行业标准.JG J94-94.建筑桩基技术规范[S].北京:中国建筑工业出版社,1994.
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