中国港湾建设
中國港灣建設
중국항만건설
CHINA HARBOUR ENGINEERING
2014年
2期
66-69
,共4页
赵振海%李祯%蔡东旭%常绍杰
趙振海%李禎%蔡東旭%常紹傑
조진해%리정%채동욱%상소걸
不等跨%连拱桥%主拱圈%支架拆除%变形
不等跨%連拱橋%主拱圈%支架拆除%變形
불등과%련공교%주공권%지가탁제%변형
unequal span%multiple arch bridge%main arch ring%bearer demolition%deformation
连云新城泻湖大桥是建造在淤泥质软土地基上的14跨跨径渐变连续拱桥，拱桥采用满堂支架法施工。工程地质条件较差，主拱圈支架拆除时由于跨径不等会导致桥墩处产生不平衡力，这将影响桥墩的安全与质量。通过分析主拱圈的支架拆除顺序对拱圈和支座处的内力和变形的影响，确定不等跨连续拱桥较为合理的支架拆除方案，并通过过程监测得到了验证。
連雲新城瀉湖大橋是建造在淤泥質軟土地基上的14跨跨徑漸變連續拱橋，拱橋採用滿堂支架法施工。工程地質條件較差，主拱圈支架拆除時由于跨徑不等會導緻橋墩處產生不平衡力，這將影響橋墩的安全與質量。通過分析主拱圈的支架拆除順序對拱圈和支座處的內力和變形的影響，確定不等跨連續拱橋較為閤理的支架拆除方案，併通過過程鑑測得到瞭驗證。
련운신성사호대교시건조재어니질연토지기상적14과과경점변련속공교，공교채용만당지가법시공。공정지질조건교차，주공권지가탁제시유우과경불등회도치교돈처산생불평형력，저장영향교돈적안전여질량。통과분석주공권적지가탁제순서대공권화지좌처적내력화변형적영향，학정불등과련속공교교위합리적지가탁제방안，병통과과정감측득도료험증。
Fourteen span of gradually varied span continuous arch bridge is constructed on the silt soft soil foundation for the Xiehu Bridge of Lianyun new city,used the support construction method for arch bridge. The engineering geological condition is poor,due to unequal span,bearer demolition of the main arch ring is generated unbalanced force for bridge pier,affected the safety and quality of the piers. Based on the analysis of the main arch ring support dismantling sequence of arch ring and bearing the influence of the internal force and deformation,is determined the reasonable bearer demolition solution of unequal span multiple arch bridge and get the verification through process monitoring.
