强度和变形双控条件下基础尺寸的设计及优化

杨光华; 孙树楷; 刘清华; 贾恺; 姜燕

doi:10.11779/CJGE2019S1002

强度和变形双控条件下基础尺寸的设计及优化 English Version

杨光华^{1, 2, 3},
孙树楷¹,
刘清华¹,
贾恺^{2, 3},
姜燕^{2, 3}

1. 华南理工大学土木与交通学院,广东广州 510640;
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

基金项目: 国家自然科学基金项目（51778152）; 广东省水利科研及技术推广项目（2005-06）

详细信息

作者简介:
杨光华(1962—),男,广东罗定人,博士,教授级高工,博士生导师,主要从事本构理论、基础工程、软土工程及基坑工程等方面的研究、设计及咨询工作。E-mail:1084242143@qq.com。

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出版历程
- 收稿日期: 2019-04-27
- 发布日期: 2019-07-14

Design and optimization of foundation sizes under dual control conditions of strength and deformation

YANG Guang-hua^{1, 2, 3},
SUN Shu-kai¹,
LIU Qing-hua¹,
JIA Kai^{2, 3},
JIANG Yan^{2, 3}

1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China;
2. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610, China;
3. The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510610, China

摘要

摘要: 新的地基设计理论提出了依据基底荷载与沉降的p-s曲线,按照强度和变形双控的原则进行基础设计,但不同的基础尺寸其对应的p-s曲线也是不同的,如何依据基底荷载与沉降的p-s曲线确定基础的合理尺寸,以满足地基强度和变形双控的原则,这是一个很具体和有意义的工作。本文基于原位压板试验的p-s曲线反算出土体参数,然后采用切线模量法计算出不同基础宽度的p-s曲线,通过沉降要求和地基强度安全系数要求得到不同尺寸下基础对应的地基承载力,然后根据基底压力确定满足强度和变形要求的最小基础尺寸,并通过案例将该方法与现行规范方法进行比较,说明该方法的合理性。
- 原位压板载荷试验 /
- 地基承载力 /
- 切线模量法 /
- 基础底面尺寸 /
- p-s曲线
Abstract: The new foundation design theory proposes a method for foundation design based on the p-s curves of base load and settlement with the principle of dual control conditions of strength and deformation. However, the corresponding p-s curves of different foundation sizes are also different. How to determine the reasonable sizes of the foundation according to the p-s curves of base load and settlement to meet the principle of dual control conditions of foundation strength and deformation is a very specific and meaningful work. The soil parameters are calculated based on the p-s curves of the in-situ plate loading tests. Then, the p-s curves of different foundation widths are calculated by the tangent modulus method, and the bearing capacities corresponding to different foundation sizes are obtained by the requirements of settlement and safety factor of foundation strength. Finally, combined with the foundation pressure to determine the minimum foundation size that meets the strength and deformation requirements, the proposed method is compared with the current codes of China through cases, which shows the rationality of this new method.
- in-situ plate loading test /
- foundation bearing capacity /
- tangent modulus method /
- foundation size /
- p-s curve

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参考文献(6)

[1]	GB50007—2011 建筑地基基础设计规范[S]. 2012. (GB50007—2011 Code for design of building foundation[S]. 2012. (in Chinese))
[2]	DBJ15—31—2016 广东省地方标准. 建筑地基基础设计规范[S]. 2016. (DBJ15—31—2016 The local standards of Guangdong province. Design code for building foundation[S]. 2016. (in Chinese))
[3]	杨光华. 地基非线性沉降计算的原状土切线模量法[J]. 岩土工程学报, 2006, 28(11): 1927-1931. (YANG Guang-hua.Nonlinear settlement computation of the soil foundation with the undisturbed soil tangent modulus method[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(11): 1927-1931. (in Chinese))
[4]	杨光华, 姜燕, 张玉成, 等. 确定地基承载力的新方法[J]. 岩土工程学报, 2014, 36(4): 597-603. (YANG Guang-hua, JIANG Yan, ZHANG Yu-cheng, et al.New method for determination of bearing capacity of soil foundation[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(4): 597-603. (in Chinese))
[5]	杨光华, 黄致兴, 姜燕, 等. 地基承载力确定的双控方法[J]. 岩土力学, 2016(增刊2): 323-242. (YANG Guang-hua, HUANG Zhi-xing, JIANG Yan, et al.Double controlling method for determining bearing capacity of foundation soils[J]. Rock and Soil Mechanics, 2016(S2): 323-242. (in Chinese))
[6]	SJG 01—2010 地基基础勘察设计规范[S]. 2010. (SJG 01—2010 Code for investigation and design of foundation[S]. 2010. (in Chinese)

施引文献(5)

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