鋼筋混凝土單向區(qū)格板經(jīng)濟厚度研究
張望喜，張 載
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(湖南大學土木工程學院, 長沙 410082)[摘要] 混凝土梁板結(jié)構(gòu)是現(xiàn)階段結(jié)構(gòu)設(shè)計中很常用的結(jié)構(gòu)形式，而板作為這種結(jié)構(gòu)形式的重要組成部分，尋求一個比較經(jīng)濟合理的板厚對于整個結(jié)構(gòu)設(shè)計和建筑物造價都是相當重要的.本文以肋梁樓蓋的單向板為對象，參照現(xiàn)行混凝土和鋼筋市場價格行情，通過控制最低造價考慮跨度、鋼筋、樓面荷載以及混凝土強度的變化來討論混凝土樓板板厚的變化規(guī)律，最終給出不同荷載，不同跨度,不同強度等級鋼筋以及不同混凝土強度下樓板的經(jīng)濟厚度，供土木人在進行樓板設(shè)計時借鑒和參考。[關(guān)鍵詞] 梁板結(jié)構(gòu);單向板;造價;經(jīng)濟板厚;參數(shù)中圖分類號：TU375.2 文獻標識碼：A 文章編號：1002-848X(2013)S1-0681-03Study of economic thickness of one-way slabs of reinforced concreteZhang Wangxi，Zhang Zai(College of Civil Engineering, Hunan University, Changsha 410082, China)Abstract: The beam and slab structures of reinforced concrete is a very common structure type at the present stage of design, so trying to find a reasonable and economic thickness of slab is very important for the whole of structure design and the cost of building. This article’s subject is the monolithic beam and slab structures with one-way slabs, considering the present price of concrete and steel bar. It discusses the principles of thickness of slabs in different conditions, like different loading, span, strength of steel bar and concrete by the determining criterion, the lowest cost of the slab. Finally the article will show the economic thickness of slab in different cases to help structural engineers design the beam and slab structures.Keywords: beam and slab structures; one-way slabs; cost; economic thickness of slabs; different conditions
