外文翻譯---軟土質(zhì)條件下管樁施工的技術(shù)措施-文庫吧
2025-04-17 08:38 本頁面
【正文】 性來定，深度宜為樁長的 1/3～ 1/2（不超過 12m），施工時(shí)應(yīng)隨鉆隨打。 c 工程周邊、分期施工的區(qū)塊周邊可以考慮應(yīng)力釋放孔、隔震溝、砂井等措施。 (3) 沉樁線路的選定 沉樁線路應(yīng)盡量采取 “走長蛇形線路 ”，在鄰近建筑物或者需要保 護(hù)管線的區(qū)域應(yīng)當(dāng)考慮 “由近及遠(yuǎn) ”的施工方向。由此，可以給超孔隙水壓力分散提供盡量長的時(shí)間，避免其累積疊加，減小擠土影響。 (4) 壓樁的速度控制沉樁的速度最好控制在 lm/min左右，使得各層的土體能夠正確反映其抗剪能力。當(dāng)?shù)鼗韺又写嬖诖髩K石頭等障礙物時(shí)，要避免壓偏。 4) 施工現(xiàn)場應(yīng)當(dāng)準(zhǔn)備有應(yīng)急措施的砂袋、鋼管、鋼筋、水泥、注漿機(jī)、發(fā)電機(jī)等施工工具。地面出現(xiàn)裂縫采用灌漿修復(fù)，避免地表水滲入，并及時(shí)組織項(xiàng)目部和有關(guān)專家查明裂縫產(chǎn)生原因。當(dāng)出現(xiàn)邊坡水平位移超過警戒值，要立即停止相應(yīng)范圍內(nèi)的土方開挖，必要時(shí)采 用回填或者設(shè)置臨時(shí)支撐松木樁鋼板樁加固，控制變形的發(fā)展。 總之，在軟弱土的地質(zhì)條件下，土方開挖過程中施工部署和技術(shù)措施的合理安排，以及管樁施工減小擠土效應(yīng)的有效控制，能有效地避免造成土體的位移引起樁的偏移、斷樁、周邊道路、建筑物沉降等問題，社會(huì)效益明顯。同時(shí)，減少了樁基問題的處理也降低了費(fèi)用。 6 Soft soil conditions of the technical measures pipe construction Abstract The highstrength prestressed concrete pile (PHC) with its high strength concrete pile, wide adaptability and good impact resistance, peration, with high capacity, flexural cracking performance, construction of fast, convenient stable and reliable quality, durability, etc., and is widely used in highrise building foundation. This paper discusses the technical measures in the pipe construction. Key words: pile construction。 technical operations。 pile treatment. 1 Introduction Currently, highstrength prestressed concrete pipe has been applied to housing construction and bridges, piers and other projects. Highstrength prestressed concrete pipe (PHC) with its high strength concrete pile, wide adaptability, good impact resistance, peration, with high capacity, flexural cracking good performance, construction speed, convenience, quality reliability, durability and good, and is widely used in highrise building foundation. Pipe is soil paction piles, construction speed, a large number of injections in soft soil area, the soil pore water pressure, excavation without effective control, will cause partial piles, such as the quality of the broken pile accident . Therefore, we must for the quality characteristics of soft soil in the pipe construction, earth excavation techniques and adopt effective measures to guarantee the progress of pile foundation and excavation. 2 Process Principle High water content soft soil has a natural, natural void ratio, high pressibility, 7 low shear strength, coefficient of consolidation, consolidation for a long time, high sensitivity, disturbance of the large, poor permeability, plex distribution of soil layer, the physical and mechanical properties between the layers of difference between the larger, vertical, horizontal squeeze all prone to , because of its large water content, poor permeability, squeezed easily have a greater excess pore water pressure, and difficult to disperse in a short time. The coefficient of consolidation, consolidation characteristics of a long time and disturbed the soil after it difficult to quickly recover. Highstrength prestressed concrete pipe pile to soil paction, construction, faster, and the resulting soil paction within the construction area effect. Pile itself high pressive strength, flexural streng
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