Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multiple-base-expansion type tube-sinking cast-in-situ pile construction method
The invention discloses a multiple-base-expansion type tube-sinking cast-in-situ pile construction method which comprises the following steps of S1, presetting a bottom sealing filler on a pile position; S2, walking a pile driver to a construction pile position; S3, utilizing a pile hammer for hammering double pipes so as to reach the designed depth of a first expansion bit; S4, lifting an inner pipe for feeding concrete into an outer pipe; S5, descending the inner pipe to press the concrete, and pulling the outer pipe to prepare for ram expansion; S6, re-hammering the inner pipe; S7, hammering the double pipes to ram, extrude and base-expand dense concrete again; S8, lifting the inner pipe for feeding into the outer pipe again; S9, slowly pulling the outer pipe to re-hammer the inner pipeso as to form a second expansion bit; S10, lifting the inner pipe to hoist a steel reinforcement cage into the outer pipe; S10, lifting the inner pipe for feeding into the outer pipe again; and S11,descending the inner pipe to press the concrete. According to the multiple-base-expansion type tube-sinking cast-in-situ pile construction method provided by the invention, the application of a tube-sinking cast-in-situ pile construction technology has an obvious economic benefit on foundation treatment, has the characteristics of capabilities on multiply improving a single pile bearing capacity,saving the project investment, shortening the construction period, and popularizing and promoting easily, and has a wide application prospect in engineering foundation treatment.
本发明公开了一种多次扩底型沉管灌注桩施工方法，包括以下步骤：S1：在桩位上预置封底填料；S2：打桩机行走至施工桩位；S3：利用桩锤锤击双管达到第一扩大头的设计深度；S4：升起内管投砼料入外管内；S5：下内管压住砼料，拨外管准备夯扩；S6：重击内管；S7：锤击双管再次夯挤扩底密实砼；S8：起内管再次投料入外管；S9：缓拔外管重击内管形成第二个扩大头；S10：起内管吊钢筋笼入外管；S10：起内管再次投料入外管；S11：下内管压住砼。本发明该沉管灌注桩施工技术的应用，能在地基处理方面发挥明显的经济效益，具有成倍提高单桩承载力，节省工程投资，缩短施工工期，易于普及推广的特点，在工程地基处理中有广泛的应用前景。
Multiple-base-expansion type tube-sinking cast-in-situ pile construction method
The invention discloses a multiple-base-expansion type tube-sinking cast-in-situ pile construction method which comprises the following steps of S1, presetting a bottom sealing filler on a pile position; S2, walking a pile driver to a construction pile position; S3, utilizing a pile hammer for hammering double pipes so as to reach the designed depth of a first expansion bit; S4, lifting an inner pipe for feeding concrete into an outer pipe; S5, descending the inner pipe to press the concrete, and pulling the outer pipe to prepare for ram expansion; S6, re-hammering the inner pipe; S7, hammering the double pipes to ram, extrude and base-expand dense concrete again; S8, lifting the inner pipe for feeding into the outer pipe again; S9, slowly pulling the outer pipe to re-hammer the inner pipeso as to form a second expansion bit; S10, lifting the inner pipe to hoist a steel reinforcement cage into the outer pipe; S10, lifting the inner pipe for feeding into the outer pipe again; and S11,descending the inner pipe to press the concrete. According to the multiple-base-expansion type tube-sinking cast-in-situ pile construction method provided by the invention, the application of a tube-sinking cast-in-situ pile construction technology has an obvious economic benefit on foundation treatment, has the characteristics of capabilities on multiply improving a single pile bearing capacity,saving the project investment, shortening the construction period, and popularizing and promoting easily, and has a wide application prospect in engineering foundation treatment.
本发明公开了一种多次扩底型沉管灌注桩施工方法，包括以下步骤：S1：在桩位上预置封底填料；S2：打桩机行走至施工桩位；S3：利用桩锤锤击双管达到第一扩大头的设计深度；S4：升起内管投砼料入外管内；S5：下内管压住砼料，拨外管准备夯扩；S6：重击内管；S7：锤击双管再次夯挤扩底密实砼；S8：起内管再次投料入外管；S9：缓拔外管重击内管形成第二个扩大头；S10：起内管吊钢筋笼入外管；S10：起内管再次投料入外管；S11：下内管压住砼。本发明该沉管灌注桩施工技术的应用，能在地基处理方面发挥明显的经济效益，具有成倍提高单桩承载力，节省工程投资，缩短施工工期，易于普及推广的特点，在工程地基处理中有广泛的应用前景。
Multiple-base-expansion type tube-sinking cast-in-situ pile construction method
一种多次扩底型沉管灌注桩施工方法
LIU XIANGANG (Autor:in) / ZHANG DONGHAI (Autor:in) / XIONG XIAOLIN (Autor:in) / SHAO ZHONGXIN (Autor:in)
10.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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