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color=#136ec2><strong>雙向土工格柵</strong></font></a>加筋與短搭板相結合的方法在武漢陽邏長江大橋接線上進行了實體工程試驗研究,對橋頭加筋和沒有加筋路堤的分層沉降和地基沉降,以及路堤中的土壓力進行了對比觀測。建立了考慮土工格柵-土界面接觸特性的有限元模型,分析了雙向土工格柵加筋層數、層間距、格柵的抗拉模量,橋頭路堤填土的模量、粘聚力、內摩擦角和地基土的力學性質時橋頭路堤沉降的影響規律。結果表明,采用雙向土工格柵加筋和短搭板相結合的方法,可以達到消除橋頭跳車的目的;從橋頭路堤表面向下以一定層間距布設加筋層,隨加筋層數的增多(加筋深度隨之增大),外荷引起的附加剪應力能向更深處傳遞,是加筋效果提高以致橋頭差異沉降減小的重要原因,但Z大有效加筋深度約為2.5～3.6m;當格柵層數一定時,如果采取等間距布置,適中的層間距時橋頭路堤沉降Z小;增加填土的彈性模量和內摩擦角或土工格柵的剛度,可以有效降低雙向土工格柵加筋的橋頭路堤沉降。</span></p></div> <h3 class="tag">相關標簽：<a href="http://www.permaculturegreenhouse.com/tag/%E5%8F%8C%E5%90%91%E6%8B%89%E4%BC%B8%E5%9C%9F%E5%B7%A5%E6%A0%BC%E6%A0%85">雙向拉伸土工格柵</a> </h3> <div class="page">上一篇：<a href="http://www.permaculturegreenhouse.com/news/333.html">土工格柵性能系數</a><br />下一篇：<span><a href="http://www.permaculturegreenhouse.com/news/335.html">單向土工格柵機械設備介紹及特點</a></span></div> </div> </div> </div> <div class="page-mob-tool"> <ul> <li class="xymob-page-navbtn"><i class="icon-font icon-dots-horizontal"></i></li> <li class="xymob-page-backtop"><i 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