| 广州地区花岗岩残积土力学特性试验及参数研究 |
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| 引用本文： | 温 勇,杨光华,汤连生,徐传堡,黄致兴,黄忠铭,张玉成. 广州地区花岗岩残积土力学特性试验及参数研究[J]. 岩土力学, 2016, 37(Z2): 209-215. DOI: 10.16285/j.rsm.2016.S2.025 |
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| 作者姓名： | 温 勇 杨光华 汤连生 徐传堡 黄致兴 黄忠铭 张玉成 |
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| 作者单位： | 1. 中山大学 地球科学与地质工程学院，广东 广州 510275；2. 广东省水利水电科学研究院，广东 广州 510610； 3. 广东省岩土工程技术研究中心，广东 广州 510610；4. 华南理工大学 土木与交通学院，广东 广州 510641 |
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| 基金项目： | 国家自然科学基金（No.51378131，No.41572277）；全国高等学校博士学科专项科研基金（No.20120171110031）；广东省自然科学基金（No.2015A030313118）；广东省岩土工程技术研究中心开放基金（No.201404002）。 |
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| 摘 要： | 花岗岩残积土属区域性特殊土，一般具有较强的结构性，准确获得其力学参数是进行基坑等工程设计的前提条件。针对广州地区花岗岩残积土，开展系列力学特性试验研究，包括压板载荷试验、标贯试验以及室内侧限压缩、直剪等常规试验，基于试验结果得到工程中常用的花岗岩残积土力学参数，并进行对比分析及验证。结果表明，由花岗岩残积土室内直剪试验强度参数（黏聚力c、内摩擦角 ）计算得到的地基极限承载力以及由室内侧限压缩试验得到的花岗岩残积土变形参数均明显小于实测值；由压板载荷试验反算得到的花岗岩残积土c、 和变形模量E50计算p-s曲线结果与实测结果较为吻合；由标贯试验结果得到的花岗岩残积土E50则与由压板载荷试验得到的E50结果接近，说明压板载荷试验、标贯试验可作为花岗岩残积土力学参数的合理确定方法之一。
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| 关 键 词： | 广东地区花岗岩残积土 原位试验 室内试验 力学参数 |
| 收稿时间： | 2016-06-08 |
Tests and parameters study of mechanical properties of granite residual soil in Guangzhou area |
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| WEN Yong,YANG Guang-hua,TANG Lian-sheng,XU Chuan-bao. Tests and parameters study of mechanical properties of granite residual soil in Guangzhou area[J]. Rock and Soil Mechanics, 2016, 37(Z2): 209-215. DOI: 10.16285/j.rsm.2016.S2.025 |
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| Authors: | WEN Yong YANG Guang-hua TANG Lian-sheng XU Chuan-bao |
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| Affiliation: | 1. School of Earth Science and Geological Engineering, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China; 2. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou, Guangdong 510610, China; 3. Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou, Guangdong 510610, China; 4. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong 510641, China |
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| Abstract: | Granite residual soil is a regional special kind of soil which also has strong structural feature in general case. The accurate evaluation of its mechanical properties is a precondition for foundation pit and other engineering design of granite residual soil. Based on the results of a series of mechanical tests of granite residual soil in Guangzhou area, which includes plate loading test, standard penetration test and some routine laboratory test including confined compression and direct shear tests, comparative analysis and verification of the common mechanical parameters of granite residual soil are presented in this paper. The results show that the ultimate bearing capacity of foundation calculated by parameters (cohesion c, friction angle ) of granite residual soil obtained by the direct shear test, and the deformation parameter of granite residual soil obtained by the confined compression test are both significantly lower than the measured results; while the p-s curves results calculated by parameters (c, and deformation modulus E50) of granite residual soil obtained by the plate loading test are close to measured results. The E50 of granite residual soil obtained by the standard penetration test is also close to the E50 obtained by the plate loading test. Therefore, the plate loading test and standard penetration test are proved to be one of the rational ways for determining mechanical parameters of granite residual soil, which can be for reference. |
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| Keywords: | granite residual soil in Guangzhou area in-situ test laboratory test mechanical parameters |
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