岩溶地区高压旋喷桩处理地基技术工程实例
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摘要
以杭州某工程为例,针对其覆盖性岩溶及破碎带不良地质条件对基础选型进行了研究,分析了基础工程的技术特点及设计难点,从施工难度、造价、工期综合考虑提出了采用浅基础加高压旋喷桩复合地基的基础方案,提出施工工艺和控制要点;经过试桩和检测结果得出采用高压旋喷桩进行溶洞处理具有良好效果,可为类似工程的地基处理提供参考。
Based on a project case in hangzhou,the foundation type selection according to the bad geological conditions of the covered karst and crushed zone is studied. The technical characteristics and difficulties are analyzed. The construction difficulty,cost and construction period are considered. The basic scheme of foundation and high-pressure jet grouting pile composite foundation is put forward,and the construction technology and control points are put forward. After the test pile and test results,it is concluded that the high-pressure jet pile is used for the cave treatment,which can provide reference for similar foundation treatment.
Based on a project case in hangzhou,the foundation type selection according to the bad geological conditions of the covered karst and crushed zone is studied. The technical characteristics and difficulties are analyzed. The construction difficulty,cost and construction period are considered. The basic scheme of foundation and high-pressure jet grouting pile composite foundation is put forward,and the construction technology and control points are put forward. After the test pile and test results,it is concluded that the high-pressure jet pile is used for the cave treatment,which can provide reference for similar foundation treatment.
引文
[1]刘源,张可能,刘创,等.复杂岩溶地区CFG桩与高压旋喷桩复合地基的应用[J].煤田地质与勘探,2015,43(4):75-78+84.
[2]沈清林.旋喷桩在多溶洞地基中的应用[J].福建建筑高等专科学校学报,2001,3(3):80-82.
[3]林目国,李明华.高压旋喷桩复合地基在整治隧道溶洞中的应用[J].铁道工程学报,2006(2):64~66+99.
[4]游强,游猛.高压旋喷桩复合地基在大型填充性溶洞处理中的应用[J].四川理工学院学报(自然科学版),2011,24(1):118-120.
[5]赵汉亮.岩溶地区基桩钻芯法和高应变法综合应用研究[J].广东土木与建筑,2018,25(3):1-3.
[6]建筑地基基础设计规范:JGJ 50007-2011[S].北京:中国建筑工业出版社,2012.
[7]建筑桩基技术规范:JGJ 94-2008[S].北京:中国建筑工业出版社,2008.
[8]马捷.惠州市岩溶地区住宅楼复合地基与基础设计[J].广东土木与建筑,2014,21(1):22-25.
[9]仝德丰.某高层商住楼基坑支护工程设计综合研究[J].广东土木与建筑,2011,18(9):22-24.
[10]建筑基桩检测技术规范:JGJ 106-2014[S].北京:中国建筑工业出版社,2014.
[11]建筑地基处理技术规范:JGJ 106-2014[S].北京:中国建筑工业出版社,2012.
[2]沈清林.旋喷桩在多溶洞地基中的应用[J].福建建筑高等专科学校学报,2001,3(3):80-82.
[3]林目国,李明华.高压旋喷桩复合地基在整治隧道溶洞中的应用[J].铁道工程学报,2006(2):64~66+99.
[4]游强,游猛.高压旋喷桩复合地基在大型填充性溶洞处理中的应用[J].四川理工学院学报(自然科学版),2011,24(1):118-120.
[5]赵汉亮.岩溶地区基桩钻芯法和高应变法综合应用研究[J].广东土木与建筑,2018,25(3):1-3.
[6]建筑地基基础设计规范:JGJ 50007-2011[S].北京:中国建筑工业出版社,2012.
[7]建筑桩基技术规范:JGJ 94-2008[S].北京:中国建筑工业出版社,2008.
[8]马捷.惠州市岩溶地区住宅楼复合地基与基础设计[J].广东土木与建筑,2014,21(1):22-25.
[9]仝德丰.某高层商住楼基坑支护工程设计综合研究[J].广东土木与建筑,2011,18(9):22-24.
[10]建筑基桩检测技术规范:JGJ 106-2014[S].北京:中国建筑工业出版社,2014.
[11]建筑地基处理技术规范:JGJ 106-2014[S].北京:中国建筑工业出版社,2012.