土工基础

›› 2017, Vol. 31 ›› Issue (2): 222-225.

• 工程实录 • 上一篇    下一篇

约束作用对型钢水泥土梁影响的试验研究

陈 静1，丁 勇1，俞 设1，李立贡1，周克明2,3   

  1. (1.南京理工大学，南京 210094； 2.南京水利科学研究院，南京 210029； 3.水利部南京水利水文自动化研究所，南京 210012)
  • 收稿日期:2016-04-13 修回日期:2016-04-21 出版日期:2017-04-20 发布日期:2017-05-04
  • 作者简介:陈 静(1991-)，男，硕士研究生，研究方向为结构健康监测等。
  • 基金资助:

    中央级公益性科研院所基本科研业务费专项资金:Y915010

Experimental Study of the Influence of Constraint Effect of the Hot Rolled Steel Beam on the SoilCement Mixed Columns

CHEN Jing 1, DING Yong 1, YU She 1, LI Ligong 1, ZHOU Keming 2,3   

  1. (1.Nanjing University of Science and Technology, Nanjing 210094;
    2.Nanjing Hydraulic Research Institute, Nanjing, 210029;
    3.Nanjing Automation Institute of Water Conservancy and Hydrology, Nanjing, 210012)
  • Received:2016-04-13 Revised:2016-04-21 Online:2017-04-20 Published:2017-05-04

摘要： 型钢水泥土搅拌墙在基坑工程中有着广泛的应用，但现有的实验室方法研究型钢水泥土梁强度时没有考虑到型钢所受约束作用对型钢水泥土梁强度的提高，导致型钢水泥土的经济效益无法完全展现。为了研究型钢的约束作用对搅拌墙的影响，本文设计了多组型钢受约束作用的组合梁与不受约束作用的组合梁对比试验，通过比较实验组与对照组梁的刚度变化曲线，得出约束作用对型钢水泥土搅拌墙产生影响的结论。本文对型钢水泥土搅拌墙的现场应用具有一定参考价值。

关键词: 约束作用, 型钢水泥土, 组合梁, 刚度

Abstract: The soilcement mixed column inserted with hot rolled steel beam as supporting structure has received wide applications in the deep excavation projects. The current laboratory test method of determining the strength of the composite structure does not consider the constraint effect of the hot rolled steel beam on the strength improvement of the soilcement mixed column. The strength underestimation of the composite structure might result in an overconservative design and the cost effectiveness of this structure might not be fully utilized. To investigation the impact of the constraint induced by the hot rolled steel beam on the soilcement mixed wall, various laboratory tests on composite structure with and without beam constraints were performed and the stiffness variation curves were obtained.

Key words: Constraint Effect, SoilCement Mixed Column with Hot Rolled Steel Beam, Composite Beam, Stiffness