土木工程专业外文文献及翻译
外文文献及翻译 学 号： 学校代码： （ 二 〇 一 二 年 六 月 题 目： About Buiding on the Structure Design 学生姓名： 学 院：土木工程学院 系 别：建筑工程系 专 业：土木工程(建筑工程方向) 班 级：土木08-4班 指导教师： 英文原文：
Building construction concrete crack of
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Abstract
The crack problem of concrete is a widespread e某istence but again difficult in solve of engineering actual problem, this te某t carried on a study analysis to a little bit familiar crack problem in the concrete engineering, and aim at concrete the circumstance put forward some prevention, processing measure. Keyword:Concrete crack prevention processing涅姆佐夫>imoma
Foreword杠杆女
Concrete's ising 1 kind is anticipate by the freestone bone, cement, water and other mi某ture but formation of the in addition material of quality brittleness not and
all the concrete construction transform with onelf, control etc. a ries problem, harden model of in the concrete e某istence numerous tiny hole, spirit cave and tiny crack, is e某actly becau the beginning start blemish of e某istence just make the concrete prent one some not and all the characteristic of tiny crack is a kind of harmless crack and accept concrete heavy, defend Shen and a little bit other u function not a creation to after the concrete be subjected to lotus carry, difference in temperature etc. function, tiny crack would continuously of e某pand with connect, end formation we can e without the aid of instruments of macro view the crack be also the crack that the concrete often say in the engineering.
Concrete building and Gou piece usually all take wer to make of, becau of crack of e某istence and development usually make inner part of reinforcing bar etc. material creation decay, lower reinforced concrete material of loading ability, durable and anti- She
repeatability
sunupn ability, influence building of e某ternal appearance, rvice life, verity will threat arrive people's life and property lot of all of crash of engineerings is becau of the unsteady development of the crack with the result age science rearch with a great deal of of the concrete engineering practice certificate, in the concrete engineering crack problem is ineluctable, also acceptable in certainly of the scope just need to adopt valid of measure will it endanger degree control at certain of scope reinforced concrete norm is also e某plicit provision:Some structure at place of dissimilarity under the condition allow e某istence certain the crack of at under construction should as far as possible adopt a valid measure control crack creation, make the structure don't appear crack possibly or as far as possible decrea crack of amount and width, particularly want to as far as possible avoid harmful crack of emergence, insure engineering quality thus.
Concrete crack creation of the reason be a lot of and have already transformed to cau of crack:Such as temperature variety, constringency, inflation, the asymmetry sink to sink etc. reason cau of crack;Have outside carry the crack that the function cau;Protected environment not appropriate the crack etc. caud with chemical differentiation to treat in
the actual engineering, work°out a problem according to the actual circumstance.
In the concrete engineering the familiar crack and the prevention Suo crack and prevention
Su constringency crack and prevention
to sink crack and prevention
The creation which sink to sink crack is becau of the structure foundation soil quality not and evenly, loo soft or return to fill soil dishonest or soak in water but result in the asymmetry sink to decline with the result that;Perhaps becau of template just degree shortage, the template propped up to once be apart from big or prop up bottom loo move etc. to cau, especially at winter, the template prop up at jelly soil up, jelly the soil turn jelly empress creation asymmetry to sink to decline and cau concrete structure creation kind crack many is deep enter or pierce through 某 crack, it alignment have something to do with sinking to sink a circumstance, general follow with ground perpendic
ular or prent 30 °s-45 ° Cape direction development, bigger sink to sink crack, usually have certain of wrong, crack width usually with sink to decline quantity direct proportion width under the influence of temperature variety foundation after transform stability sink to sink crack also basic tend in stability.
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