摘要
本文通过对新疆克拉玛依友谊桥主桥进行静载试验,了解桥跨结构的静力特性,判断其能否继续安全正常运营。新疆克拉玛依友谊桥主桥为单塔双索面斜拉桥,通过对主桥第4跨进行静载试验,获得了桥梁在不同荷载工况下的主梁静应力、挠度、塔顶水平变位、斜拉索拉力等参数。结果表明在设计等效的试验荷载作用下,桥梁纵梁及横梁的应变及挠度校验系数均较大,虽未超过1的限值,但基本在0.85-0.98之间,接近限值,说明桥梁在设计荷载作用下结构安全储备偏低。
This article through to the xinjiang kelamayi across the bridge to carry on the static load test, understand the static characteristics of bridge span structure, determine its ability to keep safety normal operation. Xinjiang Karamay Friendship Bridge main bridge is a single tower double cable plane cable - stayed bridge, through the static load test was carried out on the main span across 4,Obtain a bridge at different load conditions of main Static stress, deflection, the top horizontal displacement, stay cable tension and other pa- rameters. The results show that the test in the design of the equivalent loads, the bridge girder＇s strain and deflection of beam calibration coeffi- cients is larger, although does not exceed the limit of 1, but the basic be- tween 0. 85 -0. 98, close to the limit, that is to say, the bridge structure un- der design load safety stock is low.
出处
《江西建材》
2016年第2期204-204,共1页
Jiangxi Building Materials
关键词
新疆
友谊桥
斜拉桥
静载试验
Xinjiang
friendship bridge
cable - stayed bridge
static load test
