加筋土高挡墙局部破坏原因及修复方案探讨

On causes of local damage of high reinforced earth retaining walls and their restoration schemes

三峡库区大部分地区地形、地质条件复杂，冲沟切割深，缺少建设用地，因此在城集镇迁建中不可避免地要修筑大量挡土墙。其中有相当数量的加筋土高挡墙（ 墙高大于１２ ｍ） 。加筋土挡墙中筋带与填料的相互作用机理十分复杂。目前对于加筋土高挡墙的设计理论及施工技术方面，国内外尚无系统的研究资料和论著。结合三峡库区巫山县新县城集仙中路１ 、２ 、３ 号高加筋土挡土墙局部破坏之实例，探讨了高加筋土挡土墙产生局部破坏的原因和符合工程实际的修复加固处理方案，为三峡库区其它地区的高加筋土挡墙的设计。

Mostportionsof Three Gorgesreservoirarea are deeply cutby gullies,theirtopographic and geologic condi tions are complicated andthelandto be usedforconstructionislittle.Thereforeitisinevitableto buildlotsofretaining walls inrelocation ofcitiesandtowns.Amongtheseretaining wallsthere are quite a numberofhighreinforced earthretaining walls (their heightisgreaterthan 12 m) .The mechanism ofinteraction betweenreinforcing bandsand placed materialinreinforced earthretaining wallsisquitecomplicated.Atpresenttherehavenotbeensystematicinformationand worksondesigntheoryand constructiontechnologyforthese walls.Thispaperdiscussescausesforlocaldamageofhighreinforced earthretaining wallsand repairing and strengtheningschemesconformingto engineering practice onthe hasisofinvestigatingand analysinglocaldamage of No.1～No.3 highreinforced earth retaining wallsinthe middleJixian roadin new countytown of Wushan countyin Three Gorgesreservoir.Theseschemescan be usedforreferencetothedesign,construction and maintenanceofhighreinforced earth retaining wallsin otherzonesof Three Gorgesreservoirarea.