Upper Bound Solutions of Horizontal Bearing Capacity of Skirted Mudmat Foundation in Sand

被引：0

作者：

Chen G. ^{[1
]}

Liu R. ^{[1
]}

机构：

[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin

来源：

Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2018年 / 51卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Bearing mechanism; Horizontal bearing capacity; Mudmat foundation; Soil damage rate; Upper bound solution;

D O I：

10.11784/tdxbz201704021

中图分类号：

学科分类号：

摘要：

As an important foundation form for deepwater oil and gas engineering in the subsea production system, mudmat has many advantages, such as lower buried depth and convenient construction. To meet the requirements of foundation slip resistance, skirts can be installed at the bottom of the mudmat, whose existence, however, will increase the difficulty in calculating the vertical bearing capacity of the mudmat. The mudmat is simplified as the skirted strip foundation in this paper. The bearing capacity model tests of mudmat are carried out in sand to study the bearing rule of mudmat under horizontal load. A new empirical parameter, horizontal soil damage rate η, is defined to reveal the combined action between skirts and the inner soil of foundation. Failure velocity field is established to analyze the horizontal bearing capacity of skirted mudmat foundation. The upper value of the horizontal bearing capacity of skirted mudmat is obtained by the upper bound theorem of limit analysis. The fitting relationship between η and H/B is obtained. © 2018, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.

引用

页码：264 / 270

页数：6

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