鋼筋混凝土單向區(qū)格板經(jīng)濟(jì)厚度研究
張望喜，張 載
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(湖南大學(xué)土木工程學(xué)院, 長(zhǎng)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(jì)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(gè)比較經(jīng)濟(jì)合理的板厚對(duì)于整個(gè)結(jié)構(gòu)設(shè)計(jì)和建筑物造價(jià)都是相當(dāng)重要的.本文以肋梁樓蓋的單向板為對(duì)象，參照現(xiàn)行混凝土和鋼筋市場(chǎng)價(jià)格行情，通過控制最低造價(jià)考慮跨度、鋼筋、樓面荷載以及混凝土強(qiáng)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(qiáng)度等級(jí)鋼筋以及不同混凝土強(qiáng)度下樓板的經(jīng)濟(jì)厚度，供土木人在進(jìn)行樓板設(shè)計(jì)時(shí)借鑒和參考。[關(guān)鍵詞] 梁板結(jié)構(gòu);單向板;造價(jià);經(jīng)濟(jì)板厚;參數(shù)中圖分類號(hào)：TU375.2 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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
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