大体积混凝土底板施工的综合防裂技术-南京师范大学学报.PDFVIP

5 3 () Vo.l 5 N o. 3 2005 9 JOURNAL OF NAN JING NORMAL UN IVERSITY ( ENGINEERING AND TECHNOLOGY) Sep, 2005 大体积混凝土底板施工的综合防裂技术 于卫红, 王文胜, 夏春梅 ( , 210042) [] , , , , , ., , . , , , . , , . , , . [] , , [] TU37, [] B, [ ] 1672-1292( 2005) 03-0084-03 The Finite Elem entAnalysis of Simulation Example onM ass Concrete Construction YU W e ihong, W ANG W ensheng, X IA Chunm e i ( Schoo l ofE lectric l ndAutom tion Engineering, N njing N orm lUn iversity, J i ngsu N njing 210042, Ch in ) Abstract: The dmi ens ion of them ss concrete is very huge. A fter the concrete is poured, gre t de l of cem ent he t of hydr tion is given off. The he t qu ntity congreg ted in the concrete c n not em it e s ily bec use of the huge dmi en- sion nd the r p id rise in the tem per ture of insidem ss concrete, so the temper ture difference between intern l nd extern l concrete is very gre t. In the course of the rise nd drop of the temper ture, the temper ture stress inside concrete ch nges gre tly bec use of the restriction, w hich induces the deleterious cr ck to com e in to being nd the construction of the m ss concrete to be difficu lt. Th is rticle incorpor tes w ith pr ctice form ss concrete construc- tion of the r ft found tion of the com prehensive bu ilding in N njing. The tem per ture field of them ss concrete is n- lyzed nd smi u l ted by the finite elem ent m ethod before construction, nd the construction project nd the optmi ized m ixture proportion re m de ccord ing of the resu lt. The purpose of the inform tive construction is ch ieved th t the tem