交通科技
交通科技
교통과기
TRANSPORTATION SCIENCE & TECHNOLOGY
2015年
2期
14-17
,共4页
支座体系无背索斜拉桥%宽幅多箱室混凝土主梁%斜塔%科技创新
支座體繫無揹索斜拉橋%寬幅多箱室混凝土主樑%斜塔%科技創新
지좌체계무배색사랍교%관폭다상실혼응토주량%사탑%과기창신
cable-stayed bridge without backstays with bearing system%large-width multi-box con-crete girder%inclined tower%technological innovation
淮北相王大桥桥面很宽，总宽达45 m，横向需设置2个混凝土斜主塔柱，主梁采用宽幅多箱室混凝土梁，加之下塔柱较矮，温度和收缩徐变等作用力较大，通过主梁和主塔墩支座连接，很好地解决了主桥各种受力要求，降低了工程造价。同时采用主动施顶的施工新法，有效地解决了斜塔施工的诸多难题。本桥为国内外首次创造性地采用支座体系宽幅多箱室混凝土主梁无背索斜拉桥。
淮北相王大橋橋麵很寬，總寬達45 m，橫嚮需設置2箇混凝土斜主塔柱，主樑採用寬幅多箱室混凝土樑，加之下塔柱較矮，溫度和收縮徐變等作用力較大，通過主樑和主塔墩支座連接，很好地解決瞭主橋各種受力要求，降低瞭工程造價。同時採用主動施頂的施工新法，有效地解決瞭斜塔施工的諸多難題。本橋為國內外首次創造性地採用支座體繫寬幅多箱室混凝土主樑無揹索斜拉橋。
회북상왕대교교면흔관，총관체45 m，횡향수설치2개혼응토사주탑주，주량채용관폭다상실혼응토량，가지하탑주교왜，온도화수축서변등작용력교대，통과주량화주탑돈지좌련접，흔호지해결료주교각충수력요구，강저료공정조개。동시채용주동시정적시공신법，유효지해결료사탑시공적제다난제。본교위국내외수차창조성지채용지좌체계관폭다상실혼응토주량무배색사랍교。
Huaibei Xiangwang Bridge has two inclined concrete pylons in transverse direction due to its total width of 45 meters.Thermal effects and creep and shrinkage effects are significant on this bridge which is provided with a large-width multi-box concrete girder and short lower concrete pylon.A scheme connecting main pylon pier and the box girder by bearings is adopted to this project as a solu-tion to the previous problem,and this scheme has turned to an effective method of meeting the various requirements of main bridge of stress and reducing project cost.Active pushing technology is also used to solve obstacles during the construction of inclined tower.Huaibei Xiangwang Bridge is the first ca-ble-stayed bridge without backstays with large-width multi-box concrete girder in creative deployment of bearing system.
