The internal force redistribution in continuous steel - concrete composite girders due to shrinkage of concrete 混凝土收縮引起連續(xù)組合梁的內(nèi)力重分布計(jì)算
1 . prestressing a composite girder enlarges the range of elastic behavior , adjusts the redistribution of internal force , reduces deflections , increases craking load and ultimate loading capacity . 2 預(yù)應(yīng)力作用擴(kuò)大了結(jié)構(gòu)的彈性范圍,調(diào)整了結(jié)構(gòu)的內(nèi)力重分布,減小了撓度變形,提高了開(kāi)裂荷載與極限承載力。
Consequently time and cost can be saved greatly . ( 3 ) design method for controlling cracks in the negative moment zone of the continuous composite girder the crack mechanism of the concrete deck in the negative moment zone of the coniinuous composite girder , the relationship between the crack and the int 分析認(rèn)為,采用中間支點(diǎn)升降法與調(diào)整混凝土板施工順序相結(jié)合的施工方法,不僅可以避免負(fù)彎矩區(qū)混凝土裂紋,還可以合理調(diào)整鋼梁和混凝土板的內(nèi)力,并使端支點(diǎn)與中間支點(diǎn)反力更均勻,使組合梁橋的結(jié)構(gòu)更加經(jīng)濟(jì)合理。