施工技术
施工技術
시공기술
CONSTRUCTION TECHNOLOGY
2014年
17期
7-10
,共4页
基坑%异形基坑%预应力鱼腹梁支撑%数值模拟%支撑%变形
基坑%異形基坑%預應力魚腹樑支撐%數值模擬%支撐%變形
기갱%이형기갱%예응력어복량지탱%수치모의%지탱%변형
foundation excavation%special-shaped foundation excavation%innovative prestressed supports%simulation%supports%deformation
宁波轨道交通1号线某异形基坑采用混凝土支撑＋鱼腹梁组合支撑体系，采用数值模拟和实测反馈等方法对预应力鱼腹梁支撑在异形基坑中的适应性进行研究。结果表明：Midas能够模拟鱼腹梁施工中的力学行为，其支撑安装和拆除工效均高于混凝土支撑，通过多次施加预应力能较好地控制围护结构变形，且材料可重复应用，节能环保。
寧波軌道交通1號線某異形基坑採用混凝土支撐＋魚腹樑組閤支撐體繫，採用數值模擬和實測反饋等方法對預應力魚腹樑支撐在異形基坑中的適應性進行研究。結果錶明：Midas能夠模擬魚腹樑施工中的力學行為，其支撐安裝和拆除工效均高于混凝土支撐，通過多次施加預應力能較好地控製圍護結構變形，且材料可重複應用，節能環保。
저파궤도교통1호선모이형기갱채용혼응토지탱＋어복량조합지탱체계，채용수치모의화실측반궤등방법대예응력어복량지탱재이형기갱중적괄응성진행연구。결과표명：Midas능구모의어복량시공중적역학행위，기지탱안장화탁제공효균고우혼응토지탱，통과다차시가예응력능교호지공제위호결구변형，차재료가중복응용，절능배보。
Based on the concrete support and innovative prestressed support ( IPS ) support combination support system engineering practice in special-shape excavation in Ningbo Rail Transit Line 1 , this paper discussed the adaptability of IPS system in special-shape excavation by using of numerical simulation, measurement feedback and other means. The results show that:the IPS system can effectively control the deformation through applying prestress, and can be repeatedly applied on dynamic controlling deformation at the stage of excavation; the installation and removal efficiency of IPS were higher than the concrete support in the project, and its component can be reused.
