設(shè)置卸荷板的扶壁式擋土墻的特殊應(yīng)用
彭磊1 ，任長(zhǎng)青2 ，烏一東1
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（1中國(guó)聯(lián)合工程公司，杭州310022；2上海巖土工程勘察設(shè)計(jì)研究院有限公司，上海200031）
[摘 要] 針對(duì)扶壁式擋土墻跨過(guò)地坑的特殊實(shí)際情況，基于對(duì)設(shè)置卸荷板的扶壁式擋土墻的受力原理的準(zhǔn)確分析，采用改進(jìn)過(guò)的扶壁式擋土墻，利用卸荷板有效的減小了擋土墻的土壓力，擋土墻截面也相應(yīng)減小，同時(shí)利用卸荷板上的覆土調(diào)整了擋土墻傾覆力矩，增大了滑移穩(wěn)定性和傾覆穩(wěn)定性，并通過(guò)植筋方式把原有地坑作為擋土墻的巨大底板，形成一種特殊的擋土墻結(jié)構(gòu)，安全經(jīng)濟(jì)合理。[關(guān)鍵詞] 扶壁式擋土墻;卸荷板;土壓力中圖分類(lèi)號(hào)：TU432 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)S1-0935-03Special application for the load-reduction platformed counterfort retaining wallPeng Lei1,Zhou Jinzhen2,Wu Yidong1(1 China United Engineering Corporation，Hangzhou 310022,China;2 Shanghai Geotechnical Investigations & Design Institute,Shanghai 200031,China)Abstract: Confronted with a special engineering application where a counterfort retaining wall crosses over an existed concrete ditch buried right under the wall, we put forward a special form of counterfort retaining wall with load-reduction platforms, and this is based on exact analysis of the soil pressure and load path. In detail, two load-reduction platforms are used to reduce the soil pressure on retaining wall, thereby, the retaining wall is designed to be thinner. Soil weight on the load-reduction platforms weakens the overturning moment, and strengthens the stability of slipping and stability of overturning. By the method of planting rein bar, united the newly constructed retaining wall with the existed ditch strongly, to a degree, the ditch acts as the huge foundation of the newly constructed retaining wall. As the structure form safe and saving, it is useful extensively.Keywords: counterfort retaining wall;load-reduction platforms;soil pressure作者簡(jiǎn)介：彭磊，碩士，工程師，Email:peng084@163.com。
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