软基深水不良地质群桩基础护筒施工质量控制  

Construction quality control of pile group foundations steel tubular casing in deepwater soft foundation

作　　者：廖一天 陈佳文 秦乙洪 邓源[1] 吕林鹏 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《黑龙江水利》2017年第8期12-17,共6页

基　　金：国家自然科学基金(51179095)

摘　　要：国内对不同条件下的深水软基钢护筒设置方案已经有了深入的研究,但护筒材质、护筒壁厚、埋深等差异较大,不同项目施工所取得的成功经验并不能完全或有效应用于其他工程实施。本文结合实际工程,通过安徽省蚌埠市长淮卫淮河大桥工程,从护筒埋深、二次周转、护筒减薄、降低护筒高度等方面进行了护筒投入施工的方案选择与优化。采用当前行业内沿用的经典公式计算出钢护筒的埋深,并对计算结果进行了优化调整;同时计算出了钢护筒的壁厚与内径,并对壁厚和内径进行了优化,使得护筒投入减少,节省了施工投入。该研究成果对深水软基钢护筒施工具有一定的指导作用。Although the setting program of steel support for deep water soft foundation under different conditions has been intensively studied at home, hut the steel tubular casing of the material, wall thickness, depth and so on were different greatly, the success of different project construction experience cannot he complete or Effectively applied to other projects. In the paper, combined with the ChanghuaiweiHuaihe Bridge project, the selection and optimization of the investment in the construction of the support tube are carried out from depth, secondary turnover, casing reduction; reduce the height of the steel tubular casing and other aspects. Using the current industry in accordance with the classic formula to calculate the depth of the steel tube, and the calculation results are optimized and adjusted. The wall thickness and the inner diameter of the steel cylinder were calculated, and the wall thickness and the inner diameter were optimized. The investment of the steel tubular casing was reduced, and the construction investment was saved. The research results have certain guiding function for the construction of steel tubular casing in deep water soft foundation.

关 键 词：深水软基 钢护筒 护筒埋深 护筒壁厚 

分 类 号：TV554[水利工程—水利水电工程] U445.551[建筑科学—桥梁与隧道工程]