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Variable-rigidity combined type prefabricated double-row-pile supporting structure and construction method thereof
The invention discloses a variable-rigidity combined type prefabricated double-row-pile supporting structure. The variable-rigidity combined type prefabricated double-row-pile supporting structure comprises a front row of piles, a rear row of piles, a pile top beam plate platform, a retaining wall and buttress ribs, wherein the front row of piles is a row of prefabricated pre-stress concrete hollow square piles which are densely arranged, and the rear row of piles is a row of prefabricated pre-stress concrete hollow piles which are arranged in a spaced mode; the front row of piles are parallelto the rear row of piles; and cast-in-place reinforcing steel bar concrete fillers are arranged in cavities of the prefabricated pre-stress concrete hollow square piles or the prefabricated pre-stress concrete hollow piles. The invention further discloses a corresponding construction method. The supporting structure disclosed by the invention is utilized, so that a water stop curtain and an in-pile soil retaining component do not need to additionally arrange, so that lateral rigidity of the supporting structure changes along depth, and therefore, application, in supporting project, of prefabricated piles with limited pile length is expanded, and the variable-rigidity combined type prefabricated double-row-pile supporting structure has the characteristics of being quick in construction, shorter in construction period, less in investment, orderly and attractive in structure surface, and the like, and is suitable for foundation pit engineering, road-swelling side slope and riverway dockrevetment support.
本发明公开了一种变刚度组合式预制双排桩支护结构,包括有前排桩、后排桩、桩顶梁板平台、挡墙、扶壁肋;前排桩为一排密集排列布置的预制预应力砼空心方桩,后排桩为一排间隔排列布置的预制预应力砼空心桩,前排桩和后排桩平行,预制预应力砼空心方桩或预制预应力砼空心桩的空腔内设现浇的钢筋砼填芯。据此,发明人还建立相应施工方法。应用本发明支护结构无需额外增设止水帷幕和桩间挡土构件,实现了支护结构侧向刚度沿深度变化,扩展了有限桩长预制桩在支护工程中的应用,具有施工快、省工期、省投资、结构表面整齐美观等特点,适合基坑工程、路崭边坡和河道码头护岸支护。
Variable-rigidity combined type prefabricated double-row-pile supporting structure and construction method thereof
The invention discloses a variable-rigidity combined type prefabricated double-row-pile supporting structure. The variable-rigidity combined type prefabricated double-row-pile supporting structure comprises a front row of piles, a rear row of piles, a pile top beam plate platform, a retaining wall and buttress ribs, wherein the front row of piles is a row of prefabricated pre-stress concrete hollow square piles which are densely arranged, and the rear row of piles is a row of prefabricated pre-stress concrete hollow piles which are arranged in a spaced mode; the front row of piles are parallelto the rear row of piles; and cast-in-place reinforcing steel bar concrete fillers are arranged in cavities of the prefabricated pre-stress concrete hollow square piles or the prefabricated pre-stress concrete hollow piles. The invention further discloses a corresponding construction method. The supporting structure disclosed by the invention is utilized, so that a water stop curtain and an in-pile soil retaining component do not need to additionally arrange, so that lateral rigidity of the supporting structure changes along depth, and therefore, application, in supporting project, of prefabricated piles with limited pile length is expanded, and the variable-rigidity combined type prefabricated double-row-pile supporting structure has the characteristics of being quick in construction, shorter in construction period, less in investment, orderly and attractive in structure surface, and the like, and is suitable for foundation pit engineering, road-swelling side slope and riverway dockrevetment support.
本发明公开了一种变刚度组合式预制双排桩支护结构,包括有前排桩、后排桩、桩顶梁板平台、挡墙、扶壁肋;前排桩为一排密集排列布置的预制预应力砼空心方桩,后排桩为一排间隔排列布置的预制预应力砼空心桩,前排桩和后排桩平行,预制预应力砼空心方桩或预制预应力砼空心桩的空腔内设现浇的钢筋砼填芯。据此,发明人还建立相应施工方法。应用本发明支护结构无需额外增设止水帷幕和桩间挡土构件,实现了支护结构侧向刚度沿深度变化,扩展了有限桩长预制桩在支护工程中的应用,具有施工快、省工期、省投资、结构表面整齐美观等特点,适合基坑工程、路崭边坡和河道码头护岸支护。
Variable-rigidity combined type prefabricated double-row-pile supporting structure and construction method thereof
变刚度组合式预制双排桩支护结构及其施工方法
WEI YONGCHAO (Autor:in) / YAN CHUN (Autor:in) / XIAO HUAJIE (Autor:in) / XIE MINGZHI (Autor:in) / WEI MI (Autor:in) / OU DONG (Autor:in) / HU TENGFEI (Autor:in)
05.06.2020
Patent
Elektronische Ressource
Chinesisch
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