土工基础

›› 2019, Vol. 33 ›› Issue (2): 137-140.

• 工程实录 • 上一篇    下一篇

袖阀管注浆在古建筑基础加固与保护中的应用研究

刘鹏飞   

  1. （中北工程设计咨询有限公司，西安 710065）
  • 收稿日期:2018-11-28 修回日期:2018-12-07 出版日期:2019-04-20 发布日期:2019-04-22
  • 作者简介:刘鹏飞（1986-），男，工程师，研究方向为岩土与地下工程方面的勘察设计。

Application of Sleeve-Valve-Pipe Grouting in Historical Building Protection and Soil Improvements

LIU Pengfei   

  1. （Zhongbei Engineering Design Consulting Co. Ltd., Xi’an 710065）
  • Received:2018-11-28 Revised:2018-12-07 Online:2019-04-20 Published:2019-04-22

摘要： 盾构工程具有地表条件复杂、穿越文物多的特点，以西安地铁6号线下穿安定门城墙为工程背景。根据安定门区域的工程地质及水文地质条件，提出了对城墙门洞基础下方地层进行袖阀管注浆预加固方案。采用midas GTS NX岩土工程有限元分析软件模拟袖阀管注浆预加固施工过程，论证了地层预加固施工方案及参数的合理性。研究表明：袖阀管设置2排，间距1.0 m×1.0 m梅花形布置，注浆加固深度为地面下2～10 m的方案对于控制城墙基础沉降及地层稳定性是非常有效。待采集施工监测数据后，进一步研究该工法的适用条件，并为类似工程提供参考。

关键词: 古建筑, 袖阀管注浆, 预加固, 数值分析, 沉降变形

Abstract: This paper presents a case history of the shielded tunnel excavation of Xi’an Metro No. 6 Line undercrossing the historical Xi’an City Wall at Anding Gate. This project was characterized as complicated surface conditions and undercrossing many historical structures. The subsurface soils of City Wall at the gate were reinforced with Sleeve-Value and Pipe grouting method based on the site geological and hydrological conditions. The grouting reinforcement process was numerically simulated by a commercial geotechnical engineering finite element analysis software MIDAS GTS NX. The results indicate that, for the vertical settlement control purposes, the two rows of sleeve pipes with 1.0 meter square spacing was very effective for the reinforcement depths between 2 and 10 meters below the ground surface. The soil improvement is currently under construction, this construction monitoring data will provide a project reference for the similar constructions.

Key words: historical buildings, sleevevalvepipe grouting method, foundation reinforcement, numerical analysis, vertical settlement