公路交通技术
公路交通技術
공로교통기술
TECHNOLOGY OF HIGHWAY AND TRANSPORT
2015年
4期
116-118
,共3页
钢桁梁桥%荷载试验%动力特性%病害
鋼桁樑橋%荷載試驗%動力特性%病害
강항량교%하재시험%동력특성%병해
steel truss bridge%load test%dynamic characteristic%disease
针对某下承式钢桁梁桥进行荷载试验、数值计算分析及承载能力评定,对桥梁运营时出现的病害进行分析.研究结果表明:主桁静、动力刚度较好,主体结构工作正常,可以满足规范相关要求;纵、横梁连接处高强螺栓松动的主要原因是桥面不平顺并在横梁处形成激振源,在车辆荷载作用下桥梁竖向振动效应强烈所致.
針對某下承式鋼桁樑橋進行荷載試驗、數值計算分析及承載能力評定,對橋樑運營時齣現的病害進行分析.研究結果錶明:主桁靜、動力剛度較好,主體結構工作正常,可以滿足規範相關要求;縱、橫樑連接處高彊螺栓鬆動的主要原因是橋麵不平順併在橫樑處形成激振源,在車輛荷載作用下橋樑豎嚮振動效應彊烈所緻.
침대모하승식강항량교진행하재시험、수치계산분석급승재능력평정,대교량운영시출현적병해진행분석.연구결과표명:주항정、동력강도교호,주체결구공작정상,가이만족규범상관요구;종、횡량련접처고강라전송동적주요원인시교면불평순병재횡량처형성격진원,재차량하재작용하교량수향진동효응강렬소치.
This paper carries out load test, numerical computing and analysis as well as evaluation of bearing capacity of some through steel truss bridge, and analyzes diseases during operation of bridge. The results of research show that rigidity of static and dynamic trusses is good, principal structures operate normally and can satisfy the requirements of specification; high - strength bolts at connection of longitudinal and transverse beams become loose mainly because of violent vertical vibration effect due to rough bridge deck and formation of excitation sources at transverse beams.
