施工技术
施工技術
시공기술
CONSTRUCTION TECHNOLOGY
2014年
12期
69-71
,共3页
桥梁工程%箱梁%预压%沉降%观测
橋樑工程%箱樑%預壓%沉降%觀測
교량공정%상량%예압%침강%관측
bridges%box girder%preloading%settlement%observation
对峡江水利枢纽坝顶拱形桥第2联现浇混凝土连续箱梁压载进行了研究，箱梁采用贝雷梁加满堂支架现浇施工，在浇筑混凝土前对支架进行预压，预压荷载为箱梁结构自重的110％。预压的目的是消除非弹性变形，得出比较准确的弹性变形数据。参照设计规范，同理论计算进行对比，得出准确数据。为施工预拱度提供可靠参数，并验证了支架的强度、刚度和稳定性。
對峽江水利樞紐壩頂拱形橋第2聯現澆混凝土連續箱樑壓載進行瞭研究，箱樑採用貝雷樑加滿堂支架現澆施工，在澆築混凝土前對支架進行預壓，預壓荷載為箱樑結構自重的110％。預壓的目的是消除非彈性變形，得齣比較準確的彈性變形數據。參照設計規範，同理論計算進行對比，得齣準確數據。為施工預拱度提供可靠參數，併驗證瞭支架的彊度、剛度和穩定性。
대협강수리추뉴패정공형교제2련현요혼응토련속상량압재진행료연구，상량채용패뢰량가만당지가현요시공，재요축혼응토전대지가진행예압，예압하재위상량결구자중적110％。예압적목적시소제비탄성변형，득출비교준학적탄성변형수거。삼조설계규범，동이론계산진행대비，득출준학수거。위시공예공도제공가고삼수，병험증료지가적강도、강도화은정성。
Authors put the loading on the No. 2 box girder of arch bridge in Xiajiang Hydro-junction. The concrete of box girder is poured with bailey and full scaffold. Before the concrete pouring,a preloading is put on the scaffold, the preloading is 110% of the box girder weight. The purpose of preloading is to eliminate the inelastic deformation to obtain the accuracy elastic deformation data. By comparing the design codes and theoretical calculations,the accuracy data are obtained. The reliable parameters for the construction of camber are provided and strength, and the stiffness and stability of the support are verified.
