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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

25卷

期数:

2008年01期

页码:

107-110

栏目:

出版日期:

2008-03-20

文章信息/Info

Title:

Calculation of Vertical Earth Pressure of Rigidity Structures Based on Two Shear Unified Strength Theory

作者:

黄亚娟^1,2,赵均海¹,田文秀^1,3

1.长安大学建筑工程学院,陕西西安710061;2.上海现代建筑设计有限公司,上海200041; 3.山东电力工程咨询院,山东济南250013

Author(s):

HUANG Ya-juan^1,2, ZHAO Jun-hai¹, TIAN Wen-xiu^1,3

1. School of Architectural Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Shanghai Xiandai Architectural Design Ltd, Shanghai 200041, China; 3. Electric Power Engineering Consulting Institute of Shandong Province, Jinan 250013, Shandong, China

关键词:

竖直土压力;  双剪统一强度理论;  中间主应力;  刚性结构

Keywords:

vertical earth pressure;  two shear unified strength theory;  main stress in middle;  rigidity structure

分类号:

TU432

DOI:

-

文献标志码:

A

摘要:

采用双剪统一强度理论,考虑中间主应力的影响,对沟内埋管的竖直土压力进行计算,得到了刚性结构物的竖直土压力的统一解。该统一解具有普遍性,既适用于拉压强度不同的材料,也适用于拉压强度相同的材料。计算结果表明,当拉压比一定时,随着填土厚度的加深,竖直土压力随着中间主应力系数的增大而减小,即沟壁向上的摩阻力对管顶上土压力的卸荷作用更加明显。应用双剪统一强度理论可以得出更符合土体性质的竖直土压力,可以更好地发挥材料的强度潜能,使其在工程应用中取得显著的经济效益。

Abstract:

Based on two shear unified strength theory,the vertical earth pressure for pipe groove was computed by considering the intermediate principal stress, and the unified solutions of vertical earth pressure of rigid structures were obtained. The unified solutions had the universality, which were either suitable to different materials of tension-compression strength, or suitable to same materials of tension-compression strength. The calculation results show that when tension-compression ratio is certain, with the filling thickness being deepening, the vertical earth pressure decreases with increasing of the intermediate principal stress coefficient, ie the effect of ditch wall friction of upward pressure on the pipe unloading is more obvious. The vertical earth pressure which is more suitable for soil properties is gained by using two shear unified strength theory, and brings the strength of materials into full play, as well as obtains the remarkable economic efficiency in the engineering applications.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2008-02-01
基金项目:教育部高等学校博士学科点专项科研基金项目(20040710001); 陕西省自然科学基础研究计划项目(2005E₂04)
作者简介:黄亚娟(1982-),女,河南商丘人,长安大学工学硕士研究生,E-mail:yajuanh@126.com。

常用功能

更新日期/Last Update: 2008-03-20