价值工程
價值工程
개치공정
VALUE ENGINEERING
2015年
25期
223-225,226
,共4页
预应力混凝土连续梁桥%满堂支架施工%悬臂施工%确定性%可靠性%可靠指标
預應力混凝土連續樑橋%滿堂支架施工%懸臂施工%確定性%可靠性%可靠指標
예응력혼응토련속량교%만당지가시공%현비시공%학정성%가고성%가고지표
pre-stressed concrete continuous girder bridge%full framing method construction%cantilever construction%deterministic%reliability%reliable index
针对分别采用满堂支架施工和悬臂法施工设计的预应力混凝土连续梁桥进行确定性和可靠性对比分析,通过有限元程序对成桥阶段选取的典型截面可靠指标进行计算。结果表明,确定性分析和可靠性分析结果有不同的规律,不能单从确定性分析结果的大小来判断结构安全储备,需将确定性分析与可靠性分析相结合,才能对结构有合理准确的判断与评价。
針對分彆採用滿堂支架施工和懸臂法施工設計的預應力混凝土連續樑橋進行確定性和可靠性對比分析,通過有限元程序對成橋階段選取的典型截麵可靠指標進行計算。結果錶明,確定性分析和可靠性分析結果有不同的規律,不能單從確定性分析結果的大小來判斷結構安全儲備,需將確定性分析與可靠性分析相結閤,纔能對結構有閤理準確的判斷與評價。
침대분별채용만당지가시공화현비법시공설계적예응력혼응토련속량교진행학정성화가고성대비분석,통과유한원정서대성교계단선취적전형절면가고지표진행계산。결과표명,학정성분석화가고성분석결과유불동적규률,불능단종학정성분석결과적대소래판단결구안전저비,수장학정성분석여가고성분석상결합,재능대결구유합리준학적판단여평개。
The object of this paper is to study the deterministic and reliability analysis of the pre-stressed concrete continuous girder bridges designed by the full framing method construction and cantilever construction. The results of typical selected cross sections show that the different regularities exist in the deterministic and reliability analysis, which indicates that accuracy and reasonable assessment of structural safety statement must be based on the combination of deterministic and reliability analysis, not the deterministic analyzing.