CAJ | 학술논문

马来西亚槟城二桥是一座主跨240 m 的三跨双塔双索面斜拉桥，采用混凝土边主梁形式，桥面宽34．6 m 。为实现相邻主梁节段异步施工，避免边主梁预应力被桥面板分摊削弱，同时克服前支点牵索挂篮施工中需预留后浇带混凝土的问题，开发了一种新型后支点反吊三角托架挂篮。该挂篮自重轻，反吊三角托架受力合理明确，可避免前支点挂篮斜拉索力系转换等问题。通过对该挂篮结构整体稳定性的优化、吊杆受力和施工接缝错台的工艺改进等措施，提升和优化了挂篮整体稳定性和抵抗变形能力，成功应用于马来西亚槟城二桥施工中。
마래서아빈성이교시일좌주과240 m 적삼과쌍탑쌍색면사랍교，채용혼응토변주량형식，교면관34．6 m 。위실현상린주량절단이보시공，피면변주량예응력피교면판분탄삭약，동시극복전지점견색괘람시공중수예류후요대혼응토적문제，개발료일충신형후지점반조삼각탁가괘람。해괘람자중경，반조삼각탁가수력합리명학，가피면전지점괘람사랍색력계전환등문제。통과대해괘람결구정체은정성적우화、조간수력화시공접봉착태적공예개진등조시，제승화우화료괘람정체은정성화저항변형능력，성공응용우마래서아빈성이교시공중。
The Second Penang Bridge is a three-span two-pylon cable-stayed bridge with a main span of 240 m and with double cable planes .The main girder belongs to the type of concrete edge beam and the bridge deck is 34 .6 m wide .To realize the asynchronous construction of the adjacent main girder sections ,avoid the condition that the prestress in the main girder will be shared by the bridge deck and weakened ,and overcome the problem of the need of reserving concrete post-cast-ing zone in the construction of using guyed form traveler with front supports ,a new type of form traveler with rear supports and reversedly-hung triangular brackets were developed .This type of form traveler has small self-weight and its reversedly-hung triangular brackets has rational load bearing performance ,therefore ,the stay force system transformation problem of the form traveler with front supports will be avoided .The overall stability and deformation resistance of the form traveler was advanced and optimized by optimizing the overall stability of the form traveler struc -ture and improving the load bearing capacity of hangers and the workmanship of the staggering of the construction joints .The form traveler was successfully used in the construction of the Second Penang Bridge in Malaysia .