Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Secondary hole cleaning construction method for cast-in-place pile based on gas lift reverse circulation
The invention discloses a secondary hole cleaning construction method for a cast-in-place pile based on gas lift reverse circulation. The secondary hole cleaning construction method sequentially comprises the following steps that firstly, construction preparation is conducted; 2, drilling is carried out to form a hole and the hole is cleaned for the first time; 3, a reinforcement cage is manufactured and hoisted; 4, a guide pipe is lowered; 5, an air pipe is inserted and connected with an air compressor; 6, mud in the hole is supplemented; 7, secondary hole cleaning is conducted; 8, sediment at the bottom of the hole is measured; and 9, underwater concrete is poured. The air pipe vertically descends along the center of the guide pipe, the bottom of the air pipe is inserted into the two-thirds position in a cast-in-place pile hole and then stops, and the top of the air pipe is located 200 mm above the top of the guide pipe and connected with the air compressor; and due to the fact that the bottom of the air pipe is inserted into the two-thirds position in the cast-in-place pile hole and then stopped, and the top of the air pipe is located 200 mm above the top of the guide pipe and connected with the air compressor, the problems that a pipe opening of the guide pipe protrudes out, reverse circulation cannot be formed, and sediment disturbance is small are solved, and the construction efficiency of secondary hole cleaning is improved.
本发明公开了一种基于气举反循环对钻孔灌注桩的二次清孔施工方法，包括如下依次进行的步骤：步骤一、施工准备；步骤二、钻进成孔及一次清孔；步骤三、钢筋笼制作与吊放；步骤四、下放导管；步骤五、插入风管并与空压机连接；步骤六、补充孔内泥浆；步骤七、二次清孔；步骤八、测孔底沉渣；步骤九、浇筑水下混凝土。风管沿着导管中心垂直下放，风管底部插入灌注桩孔内三分之二处后停止，风管顶部处于导管顶部上方200mm与空压机连接；由于风管底部插入灌注桩孔内三分之二处后停止并且风管顶部处于导管顶部上方200mm与空压机连接，解决了导管管口外冒出不会形成反循环以及沉渣扰动较小的问题，提高了二次清孔的施工效率。
Secondary hole cleaning construction method for cast-in-place pile based on gas lift reverse circulation
The invention discloses a secondary hole cleaning construction method for a cast-in-place pile based on gas lift reverse circulation. The secondary hole cleaning construction method sequentially comprises the following steps that firstly, construction preparation is conducted; 2, drilling is carried out to form a hole and the hole is cleaned for the first time; 3, a reinforcement cage is manufactured and hoisted; 4, a guide pipe is lowered; 5, an air pipe is inserted and connected with an air compressor; 6, mud in the hole is supplemented; 7, secondary hole cleaning is conducted; 8, sediment at the bottom of the hole is measured; and 9, underwater concrete is poured. The air pipe vertically descends along the center of the guide pipe, the bottom of the air pipe is inserted into the two-thirds position in a cast-in-place pile hole and then stops, and the top of the air pipe is located 200 mm above the top of the guide pipe and connected with the air compressor; and due to the fact that the bottom of the air pipe is inserted into the two-thirds position in the cast-in-place pile hole and then stopped, and the top of the air pipe is located 200 mm above the top of the guide pipe and connected with the air compressor, the problems that a pipe opening of the guide pipe protrudes out, reverse circulation cannot be formed, and sediment disturbance is small are solved, and the construction efficiency of secondary hole cleaning is improved.
本发明公开了一种基于气举反循环对钻孔灌注桩的二次清孔施工方法，包括如下依次进行的步骤：步骤一、施工准备；步骤二、钻进成孔及一次清孔；步骤三、钢筋笼制作与吊放；步骤四、下放导管；步骤五、插入风管并与空压机连接；步骤六、补充孔内泥浆；步骤七、二次清孔；步骤八、测孔底沉渣；步骤九、浇筑水下混凝土。风管沿着导管中心垂直下放，风管底部插入灌注桩孔内三分之二处后停止，风管顶部处于导管顶部上方200mm与空压机连接；由于风管底部插入灌注桩孔内三分之二处后停止并且风管顶部处于导管顶部上方200mm与空压机连接，解决了导管管口外冒出不会形成反循环以及沉渣扰动较小的问题，提高了二次清孔的施工效率。
Secondary hole cleaning construction method for cast-in-place pile based on gas lift reverse circulation
基于气举反循环对钻孔灌注桩的二次清孔施工方法
ZUO HAIHONG (Autor:in) / LIU XINGSHENG (Autor:in) / LU HUA (Autor:in) / LIU DINGWU (Autor:in) / JIANG KUN (Autor:in) / FU RUBIN (Autor:in) / LI LI (Autor:in) / QIN HE (Autor:in) / LIU XUAN (Autor:in) / ZHANG YUN (Autor:in)
14.01.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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