静压注浆微型钢花管桩在高层建筑加固纠偏中的应用
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摘要
结合某筏板基础高层建筑纠偏工程,介绍了静压注浆微型钢花管桩在高层建筑基础加固纠偏中的应用。根据工程地质状况,分析该建筑物不均匀沉降原因。通过比选,采用可调性静压注浆微型钢花管桩纠偏技术。介绍了静压注浆微型钢花管桩加固机理、低净空条件下微扰动静压桩纠偏施工技术、高压喷射注浆技术与技术控制措施等,项目取得了较好的效果。
In this paper,the application technology of static pressure grouting micro steel pipe piles is introduced in combination with the rectification engineering of a high-rise building with raft foundation. According to the engineering geology condition,the cause of the uneven settlement of the building is analyzed. By comparing the different technical solutions,the adjustable static pressure grouting micro steel tube pile deviation rectification technology is used definitely. The paper introduces the principle of static pile grouting,the construction technology of micro-disturbance static pressure piles under low headroom,the technology of high-pressure jet grouting and the technical control measures. Good results have been achieved in projects.
In this paper,the application technology of static pressure grouting micro steel pipe piles is introduced in combination with the rectification engineering of a high-rise building with raft foundation. According to the engineering geology condition,the cause of the uneven settlement of the building is analyzed. By comparing the different technical solutions,the adjustable static pressure grouting micro steel tube pile deviation rectification technology is used definitely. The paper introduces the principle of static pile grouting,the construction technology of micro-disturbance static pressure piles under low headroom,the technology of high-pressure jet grouting and the technical control measures. Good results have been achieved in projects.
引文
[1]中华人民共和国住房和城乡建设部.既有建筑地基基础加固技术规范:JGJ 123-2012[S].北京:中国建筑工业出版社,2012.
[2]甘新龙.浅谈工程地基土加固补强方案[J].科技创新导报,2009(13):108-108.
[3]石汉生,吕文龙,郭典塔.广州市某高架桥桥墩地基灌浆加固处理与分析[J].广东水利水电,2008(3):19-20.
[4]陈晓青,林本海.静压注浆加固软弱地基应用探讨[J].广州建筑,2001(1):26-28.
[5]毛小雷,孔维涛.地基基础施工与加固技术探讨[J].四川水泥,2016(10):252-252.
[6]陈逸飞,魏焕卫,陈朝伟,等.建筑物的微型桩加固和顶升纠偏设计方案[J].山东建筑大学学报,2016,31(4):390-396,408.
[7]中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.建筑基坑工程监测技术规范:GB 50497-2009[S].北京:中国计划出版社,2009.
[2]甘新龙.浅谈工程地基土加固补强方案[J].科技创新导报,2009(13):108-108.
[3]石汉生,吕文龙,郭典塔.广州市某高架桥桥墩地基灌浆加固处理与分析[J].广东水利水电,2008(3):19-20.
[4]陈晓青,林本海.静压注浆加固软弱地基应用探讨[J].广州建筑,2001(1):26-28.
[5]毛小雷,孔维涛.地基基础施工与加固技术探讨[J].四川水泥,2016(10):252-252.
[6]陈逸飞,魏焕卫,陈朝伟,等.建筑物的微型桩加固和顶升纠偏设计方案[J].山东建筑大学学报,2016,31(4):390-396,408.
[7]中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.建筑基坑工程监测技术规范:GB 50497-2009[S].北京:中国计划出版社,2009.