- 摘 要
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（杭蕭鋼構(gòu)股份有限公司， 杭州 310003）
［摘要］進(jìn)行了多腔鋼管束內(nèi)灌注普通混凝土試驗(yàn)，測量了澆筑過程中鋼管管壁的變形，并將鋼板剖開檢查內(nèi)部混凝土的成型質(zhì)量，檢測內(nèi)部混凝土的抗壓強(qiáng)度；同時，通過有限元模擬了混凝土澆筑時鋼管管壁的變形。試驗(yàn)結(jié)果表明，施工期間不超過9m高度澆筑普通混凝土?xí)r,鋼管管壁變形比較??；混凝土從流態(tài)轉(zhuǎn)變?yōu)楣虘B(tài)的過程中，管壁側(cè)壓力會逐漸消散，變形逐漸減??；普通混凝土在僅改變粗骨料直徑和塌落度的情況下，澆筑時若不進(jìn)行振搗，鋼管束內(nèi)的混凝土質(zhì)量難以達(dá)到要求。計(jì)算鋼管束管壁側(cè)壓力時，側(cè)壓力折減系數(shù)可偏保守地取為0-6。
［關(guān)鍵詞］鋼管混凝土束剪力墻； 混凝土； 鋼管管壁側(cè)壓力
中圖分類號：TU398+.9文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)11-0077-05
Experimental research on pouring ordinary concrete into shear wall formed by concrete-filled multicellular steel tube
Hu Lili, Chen Yonggan, Yin Weize
(Hangxiao Steel Structure Co., Ltd., Hangzhou 310003, China)
Abstract:The experiment of pouring ordinary concrete into shear wall formed by concrete-filled multicellular steel tube (CF-MCST) was carried out. The deformation of steel tube wall during pouring was measured. The steel plate was peeled off to check the forming quality of internal concrete and the compressive strength of internal concrete. At the same time, the deformation of steel tube wall during concrete pouring was simulated by finite element method. The test results show that the deformation of the steel tube wall is relatively small when ordinary concrete is poured at a height not exceeding 9m during construction; during the process of concrete changing from flow state to solid state, the lateral pressure of the tube wall gradually dissipates and the deformation gradually decreases; when only the diameter of coarse aggregate and the degree of collapse of the ordinary concrete are changed, the quality of concrete in the CF-MCST is difficult to achieve requirement without vibration during pouring. When calculating the wall side pressure of the CF-MCST, the reduction coefficient of lateral pressure can be conservatively taken as 0-6.
Keywords:shear wall formed by concrete-filled multicellular steel tube(CF-MCST); concrete; lateral pressure of steel tube wall
*“十三五”國家重點(diǎn)研發(fā)計(jì)劃（2017YFC0703801）。
作者簡介：胡立黎，博士，高級工程師， Email:chinahulili@163.com。
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