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| 注浆微型钢管桩刚度增大效应室内试验研究 | |
| 引用本文： | 王雁,寇海磊. 注浆微型钢管桩刚度增大效应室内试验研究[J]. 青岛建筑工程学院学报, 2012, 0(5): 47-50 |
| 作者姓名： | 王雁 寇海磊 |
| 作者单位： | 青岛理工大学土木工程学院,青岛266033 |
| 基金项目： | 国家自然科学基金资助项目（51078196） |
| 摘 要： | 注浆微型钢管桩作为一种新型支护形式,以其施工方便,具有超前支护作用,可以部分代替钢筋混凝土桩等优点,得到广泛应用.通过室内试验,对比分析了注浆前后微型钢管桩抗弯刚度变化.研究表明,注浆钢管桩刚度约为空心钢管桩刚度的1.2～1.5倍,注浆钢管刚度随管壁厚度增大有增大的趋势.试验结果有助于注浆微型钢管桩的进一步研究,为此类支护形式设计提供依据,具有一定的工程应用价值. |
| 关 键 词： | 注浆微型钢管桩 横向刚度 组合结构 基坑支护 残余变形 |
Study on stiffness increasing effect of grouting micro-steel piles |
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| WANG Yan,KOU Hai-lei. Study on stiffness increasing effect of grouting micro-steel piles[J]. Journal of Qingdao Institute of Architecture and Engineering, 2012, 0(5): 47-50 | |
| Authors: | WANG Yan KOU Hai-lei |
| Affiliation: | (School of Civil Engineering,Qingdao Technological University,Qingdao 266033,China) |
| Abstract: | As a new supporting form,the grouting micro-steel piles have widely been used because of its advantages of more quickly construction and bigger lateral stiffness.This paper analyses the stiffness of micro-steel piles before and after grouting through the indoor tests.The study indicates that the stiffness of micro-steel piles before grouting is about 1.2~1.5 times after grouting.And the stiffness increases with the wall thickness increasement.The test results are conductive to a further study of the grouting micro-steel piles and supply the design basis with a certain value for engineering application. |
| Keywords: | grouting micro-steel piles lateral stiffness composite structure foundation pit residual deformation |
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