[1]叶海霞,王康达,杨万勇,等.拟静力法与时程分析法计算液化场地桩基地震响应的差异研究[J].自然灾害学报,2018,27(06):166-172.[doi:10.13577/j.jnd.2018.0621]
 YE Haixia,WANG Kangda,YANG Wanyong,et al.Differences between quasi-static method and time-history method in calculating seismic response of piles in liquefiable sites[J].,2018,27(06):166-172.[doi:10.13577/j.jnd.2018.0621]
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拟静力法与时程分析法计算液化场地桩基地震响应的差异研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
27
期数:
2018年06期
页码:
166-172
栏目:
出版日期:
2018-12-28

文章信息/Info

Title:
Differences between quasi-static method and time-history method in calculating seismic response of piles in liquefiable sites
作者:
叶海霞1 王康达2 杨万勇3 童立元2 李洪江2
1. 南京东大岩土工程技术有限公司, 江苏 南京 210098;
2. 东南大学 岩土工程研究所, 江苏 南京 210096;
3. 江苏省建设工程施工图审核中心, 江苏 南京 210013
Author(s):
YE Haixia1 WANG Kangda2 YANG Wanyong3 TONG Liyuan2 LI Hongjiang2
1. Nanjing SEU Geotechnical Engineering Technology Co., Ltd., Nanjiing 210098, China;
2. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China;
3. Jiangsu Construction Engineering Construction Drawing Audit Center, Nanjing 210013, China
关键词:
抗震设计拟静力法时程分析法土层变位修正系数
Keywords:
seismic designquasi-static methodtime-history methodsoil displacementcorrection factor
分类号:
X43;X93;TU4;P315.93
DOI:
10.13577/j.jnd.2018.0621
摘要:
桩基抗震设计与验算历来是工程建设中的难题,拟静力法与时程分析法是抗震设计中常用的两种计算方法。本文依托废黄河泛滥区江苏宿迁典型桩基工程实例,对比和分析了二者计算地震作用下桩基动态响应的异同。计算结果表明,二者的计算思路存在着明显差异,由于拟静力法未考虑土层变位对桩基的影响导致其计算结果偏小,而时程分析法因考虑了桩-土-结构之间的相互作用,其计算结果更加符合工程实际,但较拟静力法会消耗更多计算时间。根据时程分析法的计算结果,进一步对拟静力法的桩头弯矩计算公式进行了修正,并给出了修正系数。
Abstract:
Seismic design and calculation of piles has always been a difficult problem for construction project. Quasi-static method and time-history method are two methods which are commonly used in seismic design. Based on a construction project in Suqian, this paper compared and analyzed differences between the two methods in calculating dynamic response of piles. It shows that the result of time-history method corresponds more to the reality, but the result of quasi-static method is relatively small due to the ignorance of soil displacement. However, the time-history method would cost more time compared to quasi-static method. According to the result of time-history method, a correction factor of the formula of calculating bending moment on pile tip in quasi-static method is proposed.

参考文献/References:

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[4] 黄茂松, 马昊, 李森, 等. 软黏土中水平受荷桩的静力和循环p-y曲线[J]. 岩土工程学报, 2017, 39(增刊2):9-12. HUANG Maosong, MA Hao, LI Sen, et al. Static and cyclic p-y curves for laterally loaded piles in soft clay[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(S2):9-12. (in Chinese)
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备注/Memo

备注/Memo:
收稿日期:2018-08-07;改回日期:2018-10-09。
基金项目:国家自然科学基金项目(41572273,51878157);江苏省自然科学基金项目(BK20181282);江苏省建设系统科技计划项目资助(2014ZD66)
作者简介:叶海霞(1981-),女,工程师,主要从事岩土工程、地下工程方面的研究.E-mail:77394506@qq.com
更新日期/Last Update: 1900-01-01