本文選題：U型預(yù)應(yīng)力混凝土板樁　切入點：促淤壩　出處：《水利學(xué)報》2015年S1期 　論文類型：期刊論文

【摘要】：U型預(yù)應(yīng)力混凝土板樁作為一種新型預(yù)制構(gòu)件,首次應(yīng)用于灘涂促淤壩體結(jié)構(gòu),其受力狀態(tài)不同于擋土結(jié)構(gòu)。本文結(jié)合實際工程采用LS-DYNA軟件進行三維數(shù)值模擬分析,分析其在波浪荷載作用下的動力響應(yīng),探討了設(shè)置樁土接觸面、在板樁頂部設(shè)置帽梁等處理方式的影響,以期對其設(shè)計進行優(yōu)化并推廣應(yīng)用。分析結(jié)果表明,U型預(yù)應(yīng)力混凝土板樁應(yīng)用于促淤壩時具有良好的整體穩(wěn)定性和力學(xué)性能,樁身最大拉應(yīng)力出現(xiàn)在泥面處附近,且可在樁頂設(shè)置帽梁以控制樁身之間的差異變形。
[Abstract]:As a new type of prefabricated member, U-type prestressed concrete slab pile is first applied to the siltation promoting dam structure of tidal flat, and its stress state is different from that of retaining soil structure. In this paper, the three-dimensional numerical simulation analysis is carried out by using LS-DYNA software in combination with the actual engineering. The dynamic response under wave load is analyzed, and the influence of the treatment methods such as setting pile-soil contact surface and cap beam on the top of plate pile is discussed. The results show that the U type prestressed concrete slab pile has good overall stability and mechanical properties when it is applied to the silting promoting dam, and the maximum tensile stress of the pile body appears near the mud surface. A cap beam can be set on the top of the pile to control the differential deformation of the pile body.
【作者單位】： 上�？睖y設(shè)計研究院;上海交通大學(xué)土木工程系;
【基金】：上海市科委科研計劃項目(11231202300) 上海市浦江人才計劃(13PJD017)
【分類號】：U656.3
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本文編號：1609820