河南城建学院学报
河南城建學院學報
하남성건학원학보
JOURNAL OF PINGDINGSHAN INSTITUTE OF TECHNOLOGY
2014年
2期
32-38
,共7页
PC连续梁桥%悬臂束%合龙束%超欠张拉%变形
PC連續樑橋%懸臂束%閤龍束%超欠張拉%變形
PC련속량교%현비속%합룡속%초흠장랍%변형
PC continuous beam bridge%cantilever beam%closure beam%more or less tension%deformation
预应力钢束作为预应力混凝土结构的核心材料，它的张拉程度不仅会影响结构的内力，还对结构的变形产生一定影响，从而直接影响混凝土连续梁桥成桥的挠度。结合一座三跨连续梁桥的数值模拟，通过调整预应力钢束的张拉控制应力的方式，对三种分析方案下该类桥型钢束的张拉程度对主梁挠度、挠跨比的影响进行分析和探讨。
預應力鋼束作為預應力混凝土結構的覈心材料，它的張拉程度不僅會影響結構的內力，還對結構的變形產生一定影響，從而直接影響混凝土連續樑橋成橋的撓度。結閤一座三跨連續樑橋的數值模擬，通過調整預應力鋼束的張拉控製應力的方式，對三種分析方案下該類橋型鋼束的張拉程度對主樑撓度、撓跨比的影響進行分析和探討。
예응력강속작위예응력혼응토결구적핵심재료，타적장랍정도불부회영향결구적내력，환대결구적변형산생일정영향，종이직접영향혼응토련속량교성교적뇨도。결합일좌삼과련속량교적수치모의，통과조정예응력강속적장랍공제응력적방식，대삼충분석방안하해류교형강속적장랍정도대주량뇨도、뇨과비적영향진행분석화탐토。
Prestressed steel beam is used as the core material of prestressed concrete structure, which will not only affect the degree of tension force structure, but on a certain impact on the structural deformation, and thus directly affect the deflection of concrete continuous beam bridge. This paper mainly analyzes and discus-ses the influence of steel beam’ s tension level on the girder’ s deflection and deflection based on the numerical simulation of a highway three span continuous beam bridge, by adjusting the stress controlling mode of pres-tressed steel beam.
