铁道建筑技术
鐵道建築技術
철도건축기술
RAILWAY CONSTRUCTION TECHNOLOGY
2011年
8期
17-19
,共3页
大吨位%转体桥%称重%结果分析
大噸位%轉體橋%稱重%結果分析
대둔위%전체교%칭중%결과분석
large-tonnage%swing bridge%weighing methods%results analysis
沪杭城际高速铁路跨沪杭高速公路（88.8＋160＋88.8）m自锚上承式转体拱桥采用＂支架现浇,转体就位＂的方案施工,转体重量16 800 t。转体结构的自平衡或配重平衡对施工过程的安全性起着至关重要的作用。在转体施工之前需进行称重实验,测定转体结构的不平衡力矩、摩阻力矩、偏心距及静摩阻系数,为转体结构的配重及转体施工牵引力计算提供相应的参数,从而确保转体结构在转体过程中平衡稳定、灵活转动并精确就位。
滬杭城際高速鐵路跨滬杭高速公路（88.8＋160＋88.8）m自錨上承式轉體拱橋採用＂支架現澆,轉體就位＂的方案施工,轉體重量16 800 t。轉體結構的自平衡或配重平衡對施工過程的安全性起著至關重要的作用。在轉體施工之前需進行稱重實驗,測定轉體結構的不平衡力矩、摩阻力矩、偏心距及靜摩阻繫數,為轉體結構的配重及轉體施工牽引力計算提供相應的參數,從而確保轉體結構在轉體過程中平衡穩定、靈活轉動併精確就位。
호항성제고속철로과호항고속공로（88.8＋160＋88.8）m자묘상승식전체공교채용＂지가현요,전체취위＂적방안시공,전체중량16 800 t。전체결구적자평형혹배중평형대시공과정적안전성기착지관중요적작용。재전체시공지전수진행칭중실험,측정전체결구적불평형력구、마조력구、편심거급정마조계수,위전체결구적배중급전체시공견인력계산제공상응적삼수,종이학보전체결구재전체과정중평형은정、령활전동병정학취위。
Since the anchor pile type the swivel arch bridge was constructed using stents cast-in-situ and swivel emplacement that acrossed the Shanghai and Hangzhou highway（88.8 ＋ 160 ＋ 88.8）m,16 800 t swivel weight.In the swivel process,self-balance or counterweight balance of the swivel structure plays a vital role in the safety of the construction process.In order to test the unbalanced torque,friction torque,eccentricity and static friction coefficient,offering corresponding parameters for the structure of the swivel counterweight and traction calculation swivel construction,weighing experiment should be made before swivel construction which insures that the swivel structure could be balanced stable,flexible rotation and precise positioning during swivel process.
