杭州地区地下连续墙施工工艺研究
摘要
地下连续墙技术起源于欧洲。1920年德国首先提出地下连续墙专利。1950～1960年的10年间,地下连续墙这项技术随着二战结束后经济大发展的脚步而取得了惊人的发展,包括挖槽机械、施工工艺和膨润土泥浆在基础工程中的应用。进入80年代以后,各国大力改进和研究挖槽机械和配套设备,同时改进接头形式,以便提高地下连续墙施工效率,向着更深、更复杂的目标进军。
随着杭州地铁一号线建设的正式开工,深基坑支护的施工将会得到迅速发展,特别是地下连续墙的施工技术在杭州地区也会迅速发展。
地下墙在杭州的深基坑应用最早可以追溯到90年代的杭州解百大楼深基坑的应用,到后来的杭州凯悦大酒店、浙江证券大楼···近期的杭州市商业银行、杭州广发银行大楼,以及到近期的杭州市地铁车站、杭州黄龙饭店。地下连续墙作为成熟的深基坑围护方案已经广为应用,杭州早期也应用过地下连续墙,但后来由于种种原因,地下连续墙没有被大面积的推广,其中有一个很重要的原因就是杭州的地质情况不好,杭州的地质土层中含有大量的粉砂土并且地下水位比较高。
在粉砂土层中施作地下连续墙的难度及风险相对于在粘性中高出很多,在目前已经施工的地下墙车站中,由于各个施工单位来自不同的地区,对杭州的地质情况不怎么了解,就是了解也是表面上的了解,对它的危害性认识不足,在施工中暴露出很多问题,最严重的就是泥浆的配比及它的再生利用问题,以及接头形式的筛选,怎样防止绕流,还有就是成槽工艺及机械的选型问题。
Underground continuous wall technology originated in Europe. In 1920 underground continuous wall patent was first proposed by Germany. During the decade from 1950 to 1960 underground continuous wall technology made a surprising development with the economic development after the World War II, including trench machinery, construction technology and the application of bentonite slurry in foundation engineering. After the 1980s, many countries make great efforts to improve and research trench machinery and ancillary equipment, and improve joint form, in order to improve the efficiency of construction of underground continuous wall, toward a deeper and more complex goals.
With the construction of Hangzhou Metro Line 1, deep foundation pit supporting technology will be developed rapidly in the Hangzhou area, especially the underground continuous wall construction technology.
The application of underground continuous wall in the deep pit can be traced back to the 1990s deep foundation pit engineering of Jiebai Building, and later the Hyatt Hotel in Hangzhou, Zhejiang securities building, Hangzhou municipal commercial bank building, Hangzhou Guangdong development bank building, as well as the recent Hangzhou subway station, Hangzhou dragon hotel. Underground continuous wall as a mature deep foundation pit supporting programme has been widely used. Even more early underground continuous wall had been applied in Hangzhou, but due to various reasons, the technology was not spread, of which the most important reason is that the geological situation of Hangzhou is poor, there are large amounts of silt soil in the soil layer and the water table is relatively high.
The difficulty and risks of underground continuous wall in the silt layer is much higher than in the sand. In the current construction of the underground wall station, the performance is not very good, due to various construction units from different regions, the lack understanding of Hangzhou Geological condition and can't realize that it's not harmful. during the construction many problems has been exposed, the most serious problem is the ratio of the mud and its recycling, screening of the joint form, and how to prevent flow around , how to solve it, as well as the selection of a slot technics and machine.
In the finality,the problems requiring further studies are discussed.
随着杭州地铁一号线建设的正式开工,深基坑支护的施工将会得到迅速发展,特别是地下连续墙的施工技术在杭州地区也会迅速发展。
地下墙在杭州的深基坑应用最早可以追溯到90年代的杭州解百大楼深基坑的应用,到后来的杭州凯悦大酒店、浙江证券大楼···近期的杭州市商业银行、杭州广发银行大楼,以及到近期的杭州市地铁车站、杭州黄龙饭店。地下连续墙作为成熟的深基坑围护方案已经广为应用,杭州早期也应用过地下连续墙,但后来由于种种原因,地下连续墙没有被大面积的推广,其中有一个很重要的原因就是杭州的地质情况不好,杭州的地质土层中含有大量的粉砂土并且地下水位比较高。
在粉砂土层中施作地下连续墙的难度及风险相对于在粘性中高出很多,在目前已经施工的地下墙车站中,由于各个施工单位来自不同的地区,对杭州的地质情况不怎么了解,就是了解也是表面上的了解,对它的危害性认识不足,在施工中暴露出很多问题,最严重的就是泥浆的配比及它的再生利用问题,以及接头形式的筛选,怎样防止绕流,还有就是成槽工艺及机械的选型问题。
Underground continuous wall technology originated in Europe. In 1920 underground continuous wall patent was first proposed by Germany. During the decade from 1950 to 1960 underground continuous wall technology made a surprising development with the economic development after the World War II, including trench machinery, construction technology and the application of bentonite slurry in foundation engineering. After the 1980s, many countries make great efforts to improve and research trench machinery and ancillary equipment, and improve joint form, in order to improve the efficiency of construction of underground continuous wall, toward a deeper and more complex goals.
With the construction of Hangzhou Metro Line 1, deep foundation pit supporting technology will be developed rapidly in the Hangzhou area, especially the underground continuous wall construction technology.
The application of underground continuous wall in the deep pit can be traced back to the 1990s deep foundation pit engineering of Jiebai Building, and later the Hyatt Hotel in Hangzhou, Zhejiang securities building, Hangzhou municipal commercial bank building, Hangzhou Guangdong development bank building, as well as the recent Hangzhou subway station, Hangzhou dragon hotel. Underground continuous wall as a mature deep foundation pit supporting programme has been widely used. Even more early underground continuous wall had been applied in Hangzhou, but due to various reasons, the technology was not spread, of which the most important reason is that the geological situation of Hangzhou is poor, there are large amounts of silt soil in the soil layer and the water table is relatively high.
The difficulty and risks of underground continuous wall in the silt layer is much higher than in the sand. In the current construction of the underground wall station, the performance is not very good, due to various construction units from different regions, the lack understanding of Hangzhou Geological condition and can't realize that it's not harmful. during the construction many problems has been exposed, the most serious problem is the ratio of the mud and its recycling, screening of the joint form, and how to prevent flow around , how to solve it, as well as the selection of a slot technics and machine.
In the finality,the problems requiring further studies are discussed.
引文
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[34]上海金泰工程机械有限公.GB系列地下连续墙液压抓斗.2006
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[49]赵建夏,黄力平.地下连续墙施工中的常见事故及对策.现代隧道技术,2001,8:37-39
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[2]陈哲,李冬凌.地下连续墙施工监理要点和体会.山西建筑,2007.2:91-92
[3]吴伟军,超宽.超深地下墙施工技术.建筑施工,2006.5:344-345
[4]陈中华,徐振斯.地下墙施工技术在南宁佳得鑫广场的应用.西部探矿工程,2005.6:37-39
[5]宋康,吕鹏,徐伟.润杨大桥北锚钉超厚、超深地下连续墙嵌岩成槽工艺.建筑施工,2002.124-6
[6]刘永芬,李永青,高德方.地下连续墙施工技术应用.西部探矿工程,2003.1:5-7
[7]吴详祖,朱小龙,王慧康.地下连续墙施工中常见问题及控制措施.施工技术,2005.6:51-53
[8]徐伟,周建军.地下连续墙泥浆护壁稳定分析理论探讨.建筑施工,2003.5:349-351
[9]朱伟.地下连续墙施工常遇事故的处理与预防.西川建筑科学研究,2004.385-86
[10]黄书荣.地下连续墙施工.西部探矿工程,2003.3:20-21
[11]董晓斌.地下连续墙接头渗漏综合堵漏处理的施工实践.西部探矿工程.2006.6:45-47
[12]石文艳.“Z”型幅地下连续墙的施工工艺技术问题.西部探矿工程.2006.4:63-65
[13]张彦昭,丛蔼森.“三合一”地下连续墙和非圆形大断面桩的开发和应用.西部探矿工程.2005.8:28-29
[14]储文奇,腾善涛.日本真砂地下连续墙挖掘机在特殊地质工程中的成功应用.中国工程报,2006.3.17-19
[15]叶勇,张建龙.地下连续墙圆弧形混凝土接头简易补漏技术.防渗技术,2001.12:34-35
[16]胡锦.超深地下连续墙槽壁稳定问题的探讨.建筑施工,2004.12:34-36
[17]缪绍勇,王国庆,严融.嵌岩式地下连续墙施工的研究与实践.建筑施工,2005.7:1-4
[18]张宪方.谈地下连续墙施工中的接头形式.安徽建筑,2002.2:42-43
[19]姜天鹤.十字钢板接头.浙江省省级工法2007.2
[20]郑玉辉.地下连续墙槽壁稳定的研究.岩土工程技术,2007.2:36-38
[21]章履远.地下连续墙刚性止水接头的施工技术.第七届土力学及基础工程学术会议论文集,1994.518-520
[22]石民俊.地下连续墙围护地铁车站逆筑工法.浙江省建筑业行业协会地下工程分会论文集,2005.12:94-96
[23]杨嵘昌.地下墙护壁泥浆临界相对密度的显式解—坍体底面未及地下水面[j].南京建筑工程学院学报,1995,32(1):22-28
[24]杨嵘昌.地下墙护壁泥浆临界相对密度的迭代解—坍体底面未及地下水面[j].南京建筑工程学院学报,1995,34(3):42-49
[24]杨嵘昌.地下墙浅表泥浆槽壁的稳定分析—坍体底面涉及地表时的泥浆临界相对密度[j].南京建筑工程学院学报,1997,41(2):28-34
[25]李小刚,易智宏,李莉萍.地下连续墙施工中泥浆的合理使用.探抗工程(岩土钻掘工程),2005,2:15-17
[25]黄爱军.地下连续墙成槽稳定的强度折减分析法.中国市政工程,2003,3:58-59,64
[26]德国宝峨机械设备有限公司.宝峨GB液压抓斗.2006
[27]丛蔼森.地下连续墙的设计施工与应用[M].北京:中国建筑工业出版社,2001
[28]刘广志.国外地下连续墙施工设备与工艺[M]//中国地质学会探抗工程专业委员会编.全国岩土工程钻掘工程设备与工艺会议论文集.1993:67-73
[29]刘海卿,于海峰,于波.深层地下连续墙槽壁稳定机理研究[j].科学技术与工程,2006,8:23-25
[30]唐捷明.提高地下连续墙槽壁稳定的施工方法[j].四川建材,2006,4:84-86
[31]郑国萍,段压辉.深软地层连续墙施工中槽段坍塌的分析控制[j].西部探矿工程,2006,8:10-12
[32]方奇,张聪.地下连续墙施工技术特点[j].山西建筑,2006,19:62-65
[33]颜恒.地下连续墙槽壁稳定及护壁泥浆性能研究.石家庄铁道学院学报,2006,19,76-77
[34]上海金泰工程机械有限公.GB系列地下连续墙液压抓斗.2006
[35]徐伟.外滩京城地下个的施工方法[j].济南大学学报,1994,4:64-67
[36]邓容有,唐捷朗.地下连续墙的工字钢接头施工工艺及其技术改进.建筑技术开发,2001,10:34-35,58
[37]徐伟,沈坚敏.地下连续墙槽段间连接节点构造的改进及其施工方法.建筑施工,1994,16:12-15
[38]史国芳,赵益奎.GB24型地下连续墙液压挖掘机.工程机械,1999,9:4-5
[39]罗会良,张伟荣.浅谈地下连续墙施工问题的处理.湖南有色金属,2005,4:1-3,31
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