兰州工业学院学报
蘭州工業學院學報
란주공업학원학보
Journal of Lanzhou Institute of Technology
2015年
3期
16-19
,共4页
独塔斜拉桥%压重位置%辅助墩%抗震性能
獨塔斜拉橋%壓重位置%輔助墩%抗震性能
독탑사랍교%압중위치%보조돈%항진성능
single tower cable-stayed bridge%ballast location%auxiliary pier%seismic performance
以西北地区某独塔钢箱斜拉桥为例，首先分析了昼夜温差使北侧梁端翘对结构产生的不利影响；然后通过改变压重位置分别比较辅助墩、边墩、主塔及主梁的受力状态，选出最优方案；最后计算结构在地震荷载作用下的受力状态。研究结果表明，合理的压重位置能使主体结构受力状态均满足设计及规范要求，能为该桥后续施工提供可靠依据。
以西北地區某獨塔鋼箱斜拉橋為例，首先分析瞭晝夜溫差使北側樑耑翹對結構產生的不利影響；然後通過改變壓重位置分彆比較輔助墩、邊墩、主塔及主樑的受力狀態，選齣最優方案；最後計算結構在地震荷載作用下的受力狀態。研究結果錶明，閤理的壓重位置能使主體結構受力狀態均滿足設計及規範要求，能為該橋後續施工提供可靠依據。
이서북지구모독탑강상사랍교위례，수선분석료주야온차사북측량단교대결구산생적불리영향；연후통과개변압중위치분별비교보조돈、변돈、주탑급주량적수력상태，선출최우방안；최후계산결구재지진하재작용하적수력상태。연구결과표명，합리적압중위치능사주체결구수력상태균만족설계급규범요구，능위해교후속시공제공가고의거。
This paper uses a single tower cable-stayed bridge with steel box built on northwest region as an exam-ple. Firstly the reason of the tilt for the north side beam caused by the diurnal temperature difference was ana-lyzed, and the necessity of ballast was illustrated. Then the stress state of the auxiliary pier, the side pier, the main tower and main beam were compared by changing the ballast’ s location and the optimal solution was select-ed. Finally the stress state under the seismic force was calculated. The results show that a reasonable ballast loca-tion can make the stress state of the main structure meet the design and specifications requirements, which pro-vides a reliable basis for the subsequent construction of the bridge.
