交通科技与经济
交通科技與經濟
교통과기여경제
Technology & Economy in Areas of Communications
2015年
3期
96-98
,共3页
土体蠕变%桥台变形%机理分析
土體蠕變%橋檯變形%機理分析
토체연변%교태변형%궤리분석
soil creep%abutment deformation%mechanism analysis
服役期的桥台在荷载作用下随着时间的增长会不断发生变形。考虑土体的蠕变特性，研究桥台长期变形机理，并提出防治措施。结果表明：在土体蠕变启动初期，桥台产生较快滑移变形，之后变形速率逐渐减小，经历一段时间后，变形速率趋向较小的稳定值，桥台匀速缓慢变形。改善土基的物理特性，采用桩基础传递桥面荷载到较深持力层，能有效地减少桥台长期变形现象的发生。
服役期的橋檯在荷載作用下隨著時間的增長會不斷髮生變形。攷慮土體的蠕變特性，研究橋檯長期變形機理，併提齣防治措施。結果錶明：在土體蠕變啟動初期，橋檯產生較快滑移變形，之後變形速率逐漸減小，經歷一段時間後，變形速率趨嚮較小的穩定值，橋檯勻速緩慢變形。改善土基的物理特性，採用樁基礎傳遞橋麵荷載到較深持力層，能有效地減少橋檯長期變形現象的髮生。
복역기적교태재하재작용하수착시간적증장회불단발생변형。고필토체적연변특성，연구교태장기변형궤리，병제출방치조시。결과표명：재토체연변계동초기，교태산생교쾌활이변형，지후변형속솔축점감소，경력일단시간후，변형속솔추향교소적은정치，교태균속완만변형。개선토기적물리특성，채용장기출전체교면하재도교심지력층，능유효지감소교태장기변형현상적발생。
Abutment deform constantly under load with the increase of time during the service period . considering the creep of soil , the mechanism of long‐term deformation of abutment is sdudied . T he prevention measures are put forward .It shows that the abutment slip quickly in the early stage of creep , and then deformation rate decreases .After a certain time ,the rate of deformation trend of a stable value , the deformation of abutment maintains uniformly and slowly .Improving the physical properties of soil and using of pile foundation can effectively reduce the long‐term deformation of bridge .
