世界桥梁
世界橋樑
세계교량
WORLD BRIDGE
2015年
1期
75-78
,共4页
张百永%周茂定%黄淼%苗超
張百永%週茂定%黃淼%苗超
장백영%주무정%황묘%묘초
桥梁工程%设计规范%南非规范%汽车荷载%铰接板梁法%刚接梁法%横向分布系数%弯矩影响线
橋樑工程%設計規範%南非規範%汽車荷載%鉸接闆樑法%剛接樑法%橫嚮分佈繫數%彎矩影響線
교량공정%설계규범%남비규범%기차하재%교접판량법%강접량법%횡향분포계수%만구영향선
bridge engineering%design code%SATCC%traffic load%hinged plate beam meth-od%rigidly connected beam method%transverse distribution coefficient%bending moment influential line
为给我国涉外桥梁工程项目设计提供参考，对我国与南非桥梁设计规范中汽车荷载效应进行对比研究。采用铰接板梁法和刚接梁法，计算常用跨径的单片简支梁在南非与中国规范汽车活载作用下的横向分布系数。在此基础上，通过对简支梁及整体式连续梁的纵向影响线加载，分析2种规范中考虑汽车活载纵、横向分布后的差异。对比发现，对于常用中小跨径的简支、连续梁，南非规范汽车活载效应均高出中国规范30％以上；对于简支T梁跨中截面及连续梁支点截面，南非规范汽车活载效应高出中国规范35％～80％。即便考虑到两国规范中汽车冲击效应计入方式的不同，南非规范汽车活载也大于中国规范规定值。
為給我國涉外橋樑工程項目設計提供參攷，對我國與南非橋樑設計規範中汽車荷載效應進行對比研究。採用鉸接闆樑法和剛接樑法，計算常用跨徑的單片簡支樑在南非與中國規範汽車活載作用下的橫嚮分佈繫數。在此基礎上，通過對簡支樑及整體式連續樑的縱嚮影響線加載，分析2種規範中攷慮汽車活載縱、橫嚮分佈後的差異。對比髮現，對于常用中小跨徑的簡支、連續樑，南非規範汽車活載效應均高齣中國規範30％以上；對于簡支T樑跨中截麵及連續樑支點截麵，南非規範汽車活載效應高齣中國規範35％～80％。即便攷慮到兩國規範中汽車遲擊效應計入方式的不同，南非規範汽車活載也大于中國規範規定值。
위급아국섭외교량공정항목설계제공삼고，대아국여남비교량설계규범중기차하재효응진행대비연구。채용교접판량법화강접량법，계산상용과경적단편간지량재남비여중국규범기차활재작용하적횡향분포계수。재차기출상，통과대간지량급정체식련속량적종향영향선가재，분석2충규범중고필기차활재종、횡향분포후적차이。대비발현，대우상용중소과경적간지、련속량，남비규범기차활재효응균고출중국규범30％이상；대우간지T량과중절면급련속량지점절면，남비규범기차활재효응고출중국규범35％～80％。즉편고필도량국규범중기차충격효응계입방식적불동，남비규범기차활재야대우중국규범규정치。
For this study ,the traffic load effect in the JTG D06-2004 and Draft Code of Prac‐tice for the Design of Road Bridges and Culverts (SATCC) is contrastively studied ,with the aim of providing references for the design of China′s overseas bridge engineering projects .The methods of hinged plate beam and rigidly connected beam were used to calculate the transverse distribution co‐efficients of single beam simply‐supported bridge with common span lengths under traffic loads prescribed in SATCC and JTG D06-2004 ,respectively .Based on this analysis ,by applying loads to the longitudinal influential lines of the simply‐supported beam and integrated continuous beam , the difference of the two kinds of bridges taking into account the longitudinal and transverse distri‐bution of traffic loads in the two codes were analyzed .The results of the analysis indicate that for the simply‐supported and continuous beams with small and medium spans ,the traffic loads pre‐scribed in SATCC is 30% higher than that in JTG D06-2004 ;and for the midspan cross section of simply‐supported T beam and support cross section of continuous beam ,the traffic load effect in SATCC is 35% ~80% higher than that in JTG D06-2004 .Even when the different inclusion ways of traffic impact effect in the two codes are considered ,the traffic loads prescribed in SATCC are higher than those prescribed in JTG D06-2004 .
