Internal force and deformation calculation of chair retaining structure
-
摘要: 基于传统排桩的设计计算理论，提出一种适用于椅式支挡结构的计算方法，并对椅式支挡结构的前、后排桩间土体对桩侧的初始土压力分配系数进行了改进。利用Mathematica软件编制了椅式支挡结构分析程序CRSA，采用理正深基坑支护设计软件对双排桩支挡结构进行了计算和对比分析，分析结果表明CRSA程序计算是正确的，可用于实际工程的计算和分析。结合具体工程项目，对3个不同坡段的椅式支挡结构的内力和变形进行计算与分析，分析结果表明椅式支挡结构在前排桩与连梁连接处弯矩最大，支护结构设计时，需加大此处的配筋量；桩体剪力最大值位于基坑底以下的前排桩，水平位移最大值位于前排桩的桩顶，设计时需注意使结构的内力和变形满足相关要求。
-
关键词:
- 初始土压力分配系数 /
- Mathematica /
- 结构分析 /
- 双排桩支挡结构 /
- 理正深基坑设计软件
Abstract: Based on the traditional design and calculation theory of pile row, a calculation method suitable for the chair retaining structure was proposed, and the initial soil pressure distribution coefficient between the front and back piles of the chair retaining structure was improved. The chair retaining structure analysis program CRSA was compiled by Mathematica software, and the double-row pile retaining structure was calculated and compared by Lizheng deep foundation pit support design software. The analysis results show that the CRSA program is correct and can be used for practical engineering calculation and analysis. According to the concrete project, the internal force and deformation of the chair retaining structure with three different slope sections were calculated and analyzed. The analysis results show that the bending moment of the chair retaining structures was the largest at the joint of the front pile and the connecting beam. When designing the structure, the reinforcement amount at this location should be increased. The maximum value of pile shear was located at the front pile below the foundation pit bottom, and the maximum value of horizontal displacement was located at the top of the front pile. Attention should be paid to the internal force and deformation of the structure to meet the relevant requirements during design. -
表 2 理正方法与本文方法计算结果对比
计算方法 最大剪力/kN 最大弯矩/（kN·m） 最大水平位移/mm 理正方法 392.49 808.47 20.37 本文方法 430.87 775.05 21.64 
下载: 导出CSV
表 3 场区内典型边坡设计概况
边坡分段 坡长/m 坡高/m 边坡性质 C—D 74.5 8.7 半挖半填，土质边坡 C—E 88.2 8.8～12.8 半挖半填，土质边坡 F—G 43.5 6.6～8.6 半挖半填，土质边坡
下载: 导出CSV
-
[1] 褚冬梅. 双排桩支护结构的理论分析[D]. 天津: 天津大学, 1996. (CHU D M. Theoretical analysis of double-row pile retaining structures[D]. Tianjin: Tianjin University, 1996. (in Chinese)CHU D M. Theoretical analysis of double-row pile retaining structures[D]. Tianjin: Tianjin University, 1996. (in Chinese) [2] 蔡袁强, 赵永倩, 吴世明, 等. 软土地基深基坑中双排桩式围护结构有限元分析[J]. 浙江大学学报(自然科学版),1997,31(4):442-448. (CAI Y Q, ZHAO Y Q, WU S M, et al. FEM analysis of the deep pit excavation with retaining structure of the double piles in soft clay[J]. Journal of Zhejiang University (Engineering Science),1997,31(4):442-448. (in Chinese)CAI Y Q, ZHAO Y Q, WU S M, et al. FEM analysis of the deep pit excavation with retaining structure of the double piles in soft clay[J]. Journal of Zhejiang University (Engineering Science), 1997, 31（4）: 442-448. (in Chinese) [3] 郑 刚, 李 欣, 刘 畅, 等. 考虑桩土相互作用的双排桩分析[J]. 建筑结构学报,2004,25(1):99-106. (ZHENG G, LI X, LIU C, et al. Analysis of double-row piles in consideration of the pile-soil interaction[J]. Journal of Building Structures,2004,25(1):99-106. (in Chinese) doi: 10.3321/j.issn:1000-6869.2004.01.014ZHENG G, LI X, LIU C, et al. Analysis of double-row piles in consideration of the pile-soil interaction[J]. Journal of Building Structures, 2004, 25（1）: 99-106. (in Chinese) doi: 10.3321/j.issn:1000-6869.2004.01.014 [4] 肖世国. 边(滑)坡治理中h型组合抗滑桩的分析方法及工程应用[J]. 岩土力学,2010,31(7):2146-2152. (XIAO S G. Analytical method for h-type combined anti-sliding pile retaining landslide or excavated slope and its application to practical projects[J]. Rock and Soil Mechanics,2010,31(7):2146-2152. (in Chinese) doi: 10.3969/j.issn.1000-7598.2010.07.021XIAO S G. Analytical method for h-type combined anti-sliding pile retaining landslide or excavated slope and its application to practical projects[J]. Rock and Soil Mechanics, 2010, 31（7）: 2146-2152. (in Chinese) doi: 10.3969/j.issn.1000-7598.2010.07.021 [5] ITO T, MATSUI T, HONG W P. Design method for stabilizing piles against landslide-one row of piles[J]. Soils and Foundations,1981,21(1):21-37. doi: 10.3208/sandf1972.21.21 [6] HASSIOTIS S, CHAMEAU J L, GUNARATNE M. Design method for stabilization of slopes with piles[J]. Journal of Geotechnical and Geoenvironmental Engineering,1997,123(4):314-323. doi: 10.1061/(ASCE)1090-0241(1997)123:4(314) [7] 葛建国, 宋连海, 孙 骄, 等. 双排悬臂支护桩受力机理分析[J]. 沈阳建筑工程学院学报(自然科学版),2003,19(2):98-100. (GE J G, SONG L H, SUN J, et al. Analysis of the retaining and protection mechanism of double-row cantilever piles[J]. Journal of Shenyang Architectural and Civil Engineering University (Nature Science),2003,19(2):98-100. (in Chinese)GE J G, SONG L H, SUN J, et al. Analysis of the retaining and protection mechanism of double-row cantilever piles[J]. Journal of Shenyang Architectural and Civil Engineering University (Nature Science), 2003, 19（2）: 98-100. (in Chinese) [8] 蒋楚生. 椅式抗滑桩的内力计算[J]. 路基工程,2004(1):57-59. (JIANG C S. Internal force computation of chair type slide-resistant pile[J]. Subgrade Engineering,2004(1):57-59. (in Chinese) doi: 10.3969/j.issn.1003-8825.2004.01.024JIANG C S. Internal force computation of chair type slide-resistant pile[J]. Subgrade Engineering, 2004（1）: 57-59. (in Chinese) doi: 10.3969/j.issn.1003-8825.2004.01.024 [9] 胡会星. 斜坡地段板椅式新型支挡结构受力机理与设计计算[D]. 成都: 西南交通大学, 2013. (HU H X. Study on mechanical behavior and design optimization of new board-chair retaining structure on the slope[D]. Chengdu: Southwest Jiaotong University, 2013. (in Chinese)HU H X. Study on mechanical behavior and design optimization of new board-chair retaining structure on the slope[D]. Chengdu: Southwest Jiaotong University, 2013. (in Chinese) [10] 王 军, 王 磊, 肖昭然. 双排桩支护排距的有限元分析与研究[J]. 地下空间与工程学报,2005,1(6):1096-1099. (WANG J, WANG L, XIAO Z R. Analysis of the interval between double-row piles by finite element method[J]. Chinese Journal of Underground Space and Engineering,2005,1(6):1096-1099. (in Chinese)WANG J, WANG L, XIAO Z R. Analysis of the interval between double-row piles by finite element method[J]. Chinese Journal of Underground Space and Engineering, 2005, 1（6）: 1096-1099. (in Chinese) [11] 王 旭, 晏鄂川, 吕美君. 埋入式双排桩–土体系桩间内力分配的模拟[J]. 煤田地质与勘探,2006,34(4):57-60. (WANG X, YAN E C, LÜ M J. Simulation of internal force distribution of embedded double-row anti-slide piles using FEM[J]. Coal Geology & Exploration,2006,34(4):57-60. (in Chinese) doi: 10.3969/j.issn.1001-1986.2006.04.016WANG X, YAN E C, LÜ M J. Simulation of internal force distribution of embedded double-row anti-slide piles using FEM[J]. Coal Geology & Exploration, 2006, 34（4）: 57-60. (in Chinese) doi: 10.3969/j.issn.1001-1986.2006.04.016 [12] 白 皓, 苏 谦, 胡国玺, 等. 软岩边坡椅式桩板结构受力变形机理数值计算分析[J]. 铁道建筑, 2014, 54(7): 95-98. (BAI H, SU Q, HU G X, et al. Numerical calculation and analysis of force and deformation mechanism of chair-type pile-plate structures in soft rock slopes[J]. Railway Engineering, 2014, 54(7): 95-98. (in Chinese)BAI H, SU Q, HU G X, et al. Numerical calculation and analysis of force and deformation mechanism of chair-type pile-plate structures in soft rock slopes[J]. Railway Engineering, 2014, 54(7): 95-98. (in Chinese) [13] 张礼财, 王顺豪, 刘思阳, 等. 斜坡段路基椅式桩板支挡结构力学特性分析[J]. 高速铁路技术,2019,10(1):46-49. (ZHANG L C, WANG S H, LIU S Y, et al. Analysis of mechanical characteristics of the chair-shaped pile-board structure in steep slope subgrade[J]. High Speed Railway Technology,2019,10(1):46-49. (in Chinese) doi: 10.12098/j.issn.1674-8247.2019.01.009ZHANG L C, WANG S H, LIU S Y, et al. Analysis of mechanical characteristics of the chair-shaped pile-board structure in steep slope subgrade[J]. High Speed Railway Technology, 2019, 10（1）: 46-49. (in Chinese) doi: 10.12098/j.issn.1674-8247.2019.01.009 [14] 杨铁山. 椅式墙在高速公路修筑中的应用[D]. 西安: 长安大学, 2014. (YANG T S. The application of chair-type wall in expressway construction[D]. Xi’an: Chang’an University, 2014. (in Chinese)YANG T S. The application of chair-type wall in expressway construction[D]. Xi’an: Chang’an University, 2014. (in Chinese) [15] 中华人民共和国建设部. 建筑桩基技术规范: JGJ 94–2008[S]. 北京: 中国建筑工业出版社, 2008. (Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Technical code for building pile foundations: JGJ 94–2008[S]. Beijing: China Architecture & Building Press, 2008. (in Chinese)Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Technical code for building pile foundations: JGJ 94–2008[S]. Beijing: China Architecture & Building Press, 2008. (in Chinese) [16] 中华人民共和国住房和城乡建设部. 建筑基坑支护技术规程: JGJ 120–2012[S]. 北京: 中国建筑工业出版社, 2012. (Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Technical specification for retaining and protection of building foundation excavations: JGJ 120–2012[S]. Beijing: China Architecture & Building Press, 2012. (in Chinese)Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Technical specification for retaining and protection of building foundation excavations: JGJ 120–2012[S]. Beijing: China Architecture & Building Press, 2012. (in Chinese) [17] 中华人民共和国铁道部. 铁路路基支挡结构设计规范: TB 10025–2006[S]. 北京: 中国铁道出版社, 2006. (Ministry of Railways of the People’s Republic of China. Code for design of retaining structures of railway earthworks: TB 10025–2006[S]. Beijing: China Railway Publishing House, 2006. (in Chinese)Ministry of Railways of the People’s Republic of China. Code for design of retaining structures of railway earthworks: TB 10025–2006[S]. Beijing: China Railway Publishing House, 2006. (in Chinese) [18] 李海光. 新型支挡结构设计与工程实例[M]. 北京: 人民交通出版社, 2004. (LI H G. Design of new retaining structures and engineering examples[M]. Beijing: China Communications Press, 2004. (in Chinese)LI H G. Design of new retaining structures and engineering examples[M]. Beijing: China Communications Press, 2004. (in Chinese) [19] 龙驭球, 包世华. 结构力学教程I[M]. 北京: 高等教育出版社, 2000. (LONG Y Q, BAO S H. Structural mechanics tutorial[M]. Beijing: Higher Education Press, 2000. (in Chinese)LONG Y Q, BAO S H. Structural mechanics tutorial[M]. Beijing: Higher Education Press, 2000. (in Chinese) -
图(11) / 表(3)
计量
- 文章访问数: 25
- HTML全文浏览量: 8
- PDF下载量: 11
- 被引次数: 0
