建筑结构

2008, No.298(10) 109-111+53

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预应力混凝土管桩在7度以上抗震设防区的应用研究
Application research on PC pipe piles applied in anti-earthquake areas over 7 grade

郭秦渭;
Guo Qinwei(Kunming Metallurgy College,Kunming 650033,China)

摘要(Abstract):

通过预制方桩和预应力混凝土管桩的单桩水平静载对比试验以及管桩桩身的抗剪试验,结合现行国家有关规范和标准,探讨了预应力混凝土管桩基础水平承载力和管桩桩身抗剪性能。认为预应力混凝土管桩在7度以上抗震设防地区应用是安全可行的,其抗震设计与混凝土预制方桩或混凝土灌注桩相比,并没有桩身抗剪弱的问题。推导出了日本管桩桩身抗剪公式并进行了修正,使其与我国建筑桩基技术规范相一致,便于实际应用。
Through the single pile horizontal dead load tests of precast square concrete piles and prestressed concrete pipe piles,combining the current codes and standards,it made some analysis and exploration to the horizontal carring capacity of prestressed concrete pipe piles foundation and the anti-shearing force of prestressed concrete pipe pile body.It is concluded that the prestressed concrete pipe pile can be used safely in areas where the level of anti-earthquake is over 7 grade.Finally,according to the basic principle of material mechanics,it deduced the Japanese formula of prestressed concrete pipe pile's body anti-shearing force,and adjusted it to avail actual application in China.

关键词(KeyWords): 预应力混凝土管桩;抗剪;比较试验;抗震
prestressed concrete pipe pile;shear bearing capacity;comparison test;aseismic

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郭秦渭;
Guo Qinwei(Kunming Metallurgy College,Kunming 650033,China)

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DOI: 10.19701/j.jzjg.2008.10.036

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