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    Mechanical Analysis of Vaulted Expansion of Semi-rigid Base

    Source: Journal of Highway and Transportation Research and Development (English Edition):;2008:;Volume ( 003 ):;issue: 002
    Author:
    Zhao Xin
    ,
    Sha Aimin
    ,
    Hong Bin
    DOI: 10.1061/JHTRCQ.0000245
    Publisher: American Society of Civil Engineers
    Abstract: Vaulted expansion of semi-rigid base caused by thermal stress was analyzed with the theory of buckling of columns in mechanics of materials and the theory of buckling of elastic plates in mechanics of elasticity. Whether vaulted expansion of semi-rigid base will happens was judged by comparing the thermal stress and critical stress calculated with the two theories respectively. Several technical parameters which influence the thermal stress were analyzed and suitable values of them in construction were recommended. The result indicates that (1) the calculation results are coincident, however result computed with the theory of buckling of column is prone to be more conservative; (2) in order to avoid the failure caused by vaulted expansion in semi-rigid base, construction in winter should be avoid, and the difference in temperature during construction should he as low as possible; (3) it is improper for contractors to pursue the excessive high elastic module for semi-rigid base by increasing the content proportion of cement; (4) materials with dense structure of skeleton which has low expansion coefficient should he adopted for semi-rigid base.
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      Mechanical Analysis of Vaulted Expansion of Semi-rigid Base

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/70806
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    • Journal of Highway and Transportation Research and Development (English Edition)

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    contributor authorZhao Xin
    contributor authorSha Aimin
    contributor authorHong Bin
    date accessioned2017-05-08T22:05:02Z
    date available2017-05-08T22:05:02Z
    date copyrightDecember 2008
    date issued2008
    identifier otherjhtrcq%2E0000245.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/70806
    description abstractVaulted expansion of semi-rigid base caused by thermal stress was analyzed with the theory of buckling of columns in mechanics of materials and the theory of buckling of elastic plates in mechanics of elasticity. Whether vaulted expansion of semi-rigid base will happens was judged by comparing the thermal stress and critical stress calculated with the two theories respectively. Several technical parameters which influence the thermal stress were analyzed and suitable values of them in construction were recommended. The result indicates that (1) the calculation results are coincident, however result computed with the theory of buckling of column is prone to be more conservative; (2) in order to avoid the failure caused by vaulted expansion in semi-rigid base, construction in winter should be avoid, and the difference in temperature during construction should he as low as possible; (3) it is improper for contractors to pursue the excessive high elastic module for semi-rigid base by increasing the content proportion of cement; (4) materials with dense structure of skeleton which has low expansion coefficient should he adopted for semi-rigid base.
    publisherAmerican Society of Civil Engineers
    titleMechanical Analysis of Vaulted Expansion of Semi-rigid Base
    typeJournal Paper
    journal volume3
    journal issue2
    journal titleJournal of Highway and Transportation Research and Development (English Edition)
    identifier doi10.1061/JHTRCQ.0000245
    treeJournal of Highway and Transportation Research and Development (English Edition):;2008:;Volume ( 003 ):;issue: 002
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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