桩顶墙结构在大型崩塌体岸坡防护中的应用分析
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摘要
在对边坡治理工程中常用的桩、墙及其组合结构设计与作用分析的基础上,提出了用于壅水冲刷条件下大型崩塌堆积体治理的一种新型工程结构——桩顶墙防护结构。桩顶墙结构通过采用不同于传统刚性连接方式的一种弱势连接方式,从而改变了结构的受力模式。展示了该结构的设计理念和细部处理技巧,通过简单的计算对比说明弱势连接方式的优越性,并以工程设计为例说明了这种新型结构在强冲刷作用下大型崩塌体岸坡防治中的应用优势。
Based on the structure design and applicability analysis of several common composite pile-wall structures in slope protection engineering,a novel structure pile-underpinning-wall structure suitable for large-scale collapse bank slope under backwater erosion was proposed.This structure changed the bearing mode by using a vulnerable connection which is different from the traditional rigid type.Through an explanation on design conception,detailed treatment and simplified calculation comparison,the application advantage of this structure was demonstrated.Finally,Laohuzui collapse bank slope was taken as an example to show the usage of pile-underpinning-wall structure in practical engineering.It was proved that pile-underpinning-wall structure is an effective measure in large-scale collapse bank slope protection.
Based on the structure design and applicability analysis of several common composite pile-wall structures in slope protection engineering,a novel structure pile-underpinning-wall structure suitable for large-scale collapse bank slope under backwater erosion was proposed.This structure changed the bearing mode by using a vulnerable connection which is different from the traditional rigid type.Through an explanation on design conception,detailed treatment and simplified calculation comparison,the application advantage of this structure was demonstrated.Finally,Laohuzui collapse bank slope was taken as an example to show the usage of pile-underpinning-wall structure in practical engineering.It was proved that pile-underpinning-wall structure is an effective measure in large-scale collapse bank slope protection.
引文
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[14]Xu Kaixiang,Huang Xuebin,Fu Xiaolin,et al.Selection ofcontrol engineering measures and installation for landslideand dangerous rockbody[J].The Chinese Journal of Geolog-ical Hazard and Control,2005,16(4):130-134.[徐开祥,黄学斌,付小林,等.滑坡及危岩(崩塌)防治工程措施选择与工程设置[J].中国地质灾害与防治学报,2005,16(4):130-134.]
[15]Wang Quancai,Wang Lansheng,Li Zongyou,et al.Remedi-ation of laohuzui rockfall in duwen road induced by Wen-chuan“5.12”Earthquake[J].Journal of Mountain Sci-ence,2010(6):741-746.[王全才,王兰生,李宗有,等.“5.12”汶川地震区都汶路老虎嘴崩塌体治理[J].山地学报,2010(6):741-746.]
[2]Tao Zhiping,Zhou Depei.The design method of anti-slidepile for controlling tunnel deformation in landslide[J].Jour-nal of Mountain Research,2003,21(5):620-623.[陶志平,周德培.滑坡地段隧道变形整治中抗滑桩的设计方法[J].山地学报,2003,21(5):620-623.]
[3]Su Yuanyuan,Zhang Zhanmin,Liu Xiaoli.Computationmethods of anti-sliding micro piles:An overview[J].Chi-nese Journal of Geotechnical Engineering,2010,32(1):223-228.[苏媛媛,张占民,刘小丽.微型抗滑桩设计计算方法综述与探讨[J].岩土工程学报,2010,32(1):223-228.]
[4]Reese L C,Van Impe W F.Single piles and pile groups un-der lateral loading[M].New York:A A Balkemal Publish-er,2001:125-126.
[5]He Changrong,Li Tong,Chen Qun.3-D FEM analysis of an-chor sheet-pile retaining wall[J].Journal of Sichuan Univer-sity:Engineering Science Edition,2002,34(6):9-13.[何昌荣,李彤,陈群.锚拉式桩板墙的三维有限元计算分析[J].四川大学学报:工程科学版,2002,34(6):9-13.]
[6]Ju Nengpa,Huang Runqiu,Tu Guoxiang.The FEM study oninteraction mechanism between the pile and the rock-soil ofthe sheet-pile wall[J].Journal of Chengdu University ofTechnology:Science&Technology Edition,2006,33(4):365-370.[巨能攀,黄润秋,涂国祥.桩板墙桩土作用机理有限元分析[J].成都理工大学学报:自然科学版,2006,33(4):365-370.]
[7]Zhu Baolong,Chen Qiang,Wu Xiyong.Centrifugal model testresearch on mechanical characteristics micropile groups re-inforcing slope[J].Journal of Sichuan University:Engineer-ing Science Edition,2012,44(2):1-8.[朱宝龙,陈强,巫锡勇.微型桩群加固边坡受力特性离心模型试验研究[J].四川大学学报:工程科学版,2012,44(2):1-8.]
[8]Tang Fen,Zheng Yingren,Yang Bo.Thrust share ratios andoptimization design for two-row anti-slide piles[J].ChineseJournal of Rock Mechanics and Engineering,2010,29(S1):3162-3167.[唐芬,郑颖人,杨波.双排抗滑桩的推力分担及优化设计[J].岩石力学与工程学报,2010,29(增1):3162-3167.]
[9]Shen Yongjiang,Sun Hongyue,Shang Yuequan,et al.Optimi-zation design of connection methods of double-row anti-slidepiles tip[J].Chinese Journal of Rock Mechanics and Engi-neering,2010,29(S1):3034-3038.[申永江,孙红月,尚岳全,等.双排抗滑桩桩顶连接方式的优化设计[J].岩石力学与工程学报,2010,29(增1):3034-3038.]
[10]Sun Shuwei,Zhu Benzhen,Ma Huimin.Model experimentalresearch on anti-sliding characteristics of micropiles with capbeam[J].Chinese Journal of Rock Mechanics and Engineer-ing,2010,29(S1):3039-3044.[孙书伟,朱本珍,马惠民.框架微型桩结构抗滑特性的模型试验研究[J].岩石力学与工程学报,2010,29(增1):3039-3044.]
[11]Wang Quancai,Wang Lansheng.Application of flexiblestone-gabion framework in large-scale rock-collapse control-ling engineering[J].Journal of Mountain Science,2009(5):631-636.[王全才,王兰生.柔性框架石笼在大型崩塌体治理工程中的应用[J].山地学报,2009(5):631-636.]
[12]Li Hongliang,Shen Ke,Wei Hongtao.Cantilever retainingwall calculation analysis adopting pile base[J].TransportStandardization,2009,210:47-51.[李洪亮,沈可,魏洪涛.采用桩基础的悬臂式挡墙计算分析[J].交通标准化,2009,210:47-51.]
[13]Lin Shiquan.Bearing capacity analysis of retaining wallbased on minisize bore-hole steel tube driven cast-in-placepiles[J].Chinese Journal of Underground Space and Engi-neering,2008,2(4):341-345.[林石泉.微型钢管灌注桩桩基挡墙承载力分析[J].地下空间与工程学报,2008,2(4):341-345.]
[14]Xu Kaixiang,Huang Xuebin,Fu Xiaolin,et al.Selection ofcontrol engineering measures and installation for landslideand dangerous rockbody[J].The Chinese Journal of Geolog-ical Hazard and Control,2005,16(4):130-134.[徐开祥,黄学斌,付小林,等.滑坡及危岩(崩塌)防治工程措施选择与工程设置[J].中国地质灾害与防治学报,2005,16(4):130-134.]
[15]Wang Quancai,Wang Lansheng,Li Zongyou,et al.Remedi-ation of laohuzui rockfall in duwen road induced by Wen-chuan“5.12”Earthquake[J].Journal of Mountain Sci-ence,2010(6):741-746.[王全才,王兰生,李宗有,等.“5.12”汶川地震区都汶路老虎嘴崩塌体治理[J].山地学报,2010(6):741-746.]
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