Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
River-crossing bridge pile foundation construction method
The invention provides a river-crossing bridge pile foundation construction method which comprises the steps that S1, a trestle is erected in a main river channel, a drilling platform is established, and a drilling machine and a crane are arranged on the drilling platform; s2, performing rotary drilling according to a preset construction sequence, regularly sampling drilling slag in the drilling process, controlling the precession rotating speed and the relative density of slurry according to a sampling result, and comparing the precession rotating speed and the relative density of the slurry with a geological monitoring result; s3, hole cleaning is conducted after hole drilling is completed so that drilling residues and sediment in the drilled hole can be removed, and a concrete pouring guide pipe is installed after hole cleaning is completed; s4, prefabricated reinforcement cage sections are sequentially spliced and then placed into the drill holes, and sounding pipes are arranged on the reinforcement cage sections; and S5, after the reinforcement cage is completely put in, concrete pouring is conducted, drilling slag sampling is conducted regularly in the drilling process, the screw-in rotating speed and the relative density of slurry are controlled according to the sampling result, a drilling machine is controlled according to different soil layers or rock layers, and therefore the perpendicularity of formed holes is guaranteed.
本发明提供一种跨江大桥桩基施工方法，步骤S1，在主河槽搭设栈桥、建立钻孔平台，并在钻孔平台上安排钻机、吊车；步骤S2，按照预设施工顺序旋挖钻孔，在钻进过程中定期进行钻渣取样，并根据取样结果控制旋进转速和泥浆相对密度，并与地质监测结果进行比对；步骤S3，钻孔完成后进行清孔，以将钻孔内的钻渣及沉淀物清除，清孔完成后安装混凝土灌注导管；步骤S4，将预制的钢筋笼节段依次拼接后放入钻孔内，并在钢筋笼节段上布置声测管；步骤S5，在钢筋笼完全放入后进行混凝土灌注，在钻进过程中定期进行钻渣取样，并根据取样结果控制旋进转速和泥浆相对密度，针对不同土层或者岩层对钻机进行控制，从而保证成孔的垂直度。
River-crossing bridge pile foundation construction method
The invention provides a river-crossing bridge pile foundation construction method which comprises the steps that S1, a trestle is erected in a main river channel, a drilling platform is established, and a drilling machine and a crane are arranged on the drilling platform; s2, performing rotary drilling according to a preset construction sequence, regularly sampling drilling slag in the drilling process, controlling the precession rotating speed and the relative density of slurry according to a sampling result, and comparing the precession rotating speed and the relative density of the slurry with a geological monitoring result; s3, hole cleaning is conducted after hole drilling is completed so that drilling residues and sediment in the drilled hole can be removed, and a concrete pouring guide pipe is installed after hole cleaning is completed; s4, prefabricated reinforcement cage sections are sequentially spliced and then placed into the drill holes, and sounding pipes are arranged on the reinforcement cage sections; and S5, after the reinforcement cage is completely put in, concrete pouring is conducted, drilling slag sampling is conducted regularly in the drilling process, the screw-in rotating speed and the relative density of slurry are controlled according to the sampling result, a drilling machine is controlled according to different soil layers or rock layers, and therefore the perpendicularity of formed holes is guaranteed.
本发明提供一种跨江大桥桩基施工方法，步骤S1，在主河槽搭设栈桥、建立钻孔平台，并在钻孔平台上安排钻机、吊车；步骤S2，按照预设施工顺序旋挖钻孔，在钻进过程中定期进行钻渣取样，并根据取样结果控制旋进转速和泥浆相对密度，并与地质监测结果进行比对；步骤S3，钻孔完成后进行清孔，以将钻孔内的钻渣及沉淀物清除，清孔完成后安装混凝土灌注导管；步骤S4，将预制的钢筋笼节段依次拼接后放入钻孔内，并在钢筋笼节段上布置声测管；步骤S5，在钢筋笼完全放入后进行混凝土灌注，在钻进过程中定期进行钻渣取样，并根据取样结果控制旋进转速和泥浆相对密度，针对不同土层或者岩层对钻机进行控制，从而保证成孔的垂直度。
River-crossing bridge pile foundation construction method
一种跨江大桥桩基施工方法
HU ZHUKUI (Autor:in) / LI YONG (Autor:in) / WU DEHUA (Autor:in) / ZHANG WANLAI (Autor:in) / LI WEIWEI (Autor:in) / ZHANG ZHAO (Autor:in) / CHENG XUELIANG (Autor:in) / DU CHENXI (Autor:in)
01.07.2022
Patent
Elektronische Ressource
Chinesisch
Anti-seismic bridge pile foundation and pile foundation construction method
| Europäisches Patentamt | 2022