Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-pressure grouting construction method for large underground engineering anti-floating anchor rod
The invention discloses a high-pressure grouting construction method for a large underground engineering anti-floating anchor rod, relates to the technical field of building structures, and aims to solve the problems of low construction speed, resource waste and low construction quality. The method comprises the steps of cement mortar preparation, plain concrete cushion layer construction, dry operation hole drilling, anti-floating anchor rod manufacturing and grouting, wherein the 28-day compressive strength of cement mortar is not smaller than 42.5 MPa, the thickness of a plain concrete cushion layer is 100 mm, a walking type long spiral drilling machine is adopted for drilling, the hole diameter is 250 mm, the anti-floating anchor rod is made of a hot-rolled ribbed steel bar and a round steel limiter and is centrally installed in a drilled dry operation hole, and grouting is carried out at twice by adopting a hole bottom slurry returning method. According to the invention, the dry operation hole is large in aperture, the cement mortar is high in strength, the method is simple, the construction speed is high, the resource consumption is low, the construction quality and efficiency can be improved, and meanwhile the construction cost is reduced.
本发明公开了一种大型地下工程抗浮锚杆高压注浆施工方法，涉及建筑结构技术领域，为解决施工速度慢、资源浪费和施工质量低的问题；本发明的步骤包括制备水泥砂浆、素砼垫层施工、钻干作业成孔、制作抗浮锚杆和注浆，其中水泥砂浆28天抗压强度不小于42.5MPa，素砼垫层厚100mm，钻孔采用步履式长螺旋钻机，孔径250mm，抗浮锚杆由热轧带肋钢筋和圆钢限位器制成且居中安装在钻干作业成孔中，注浆采用孔底返浆法分两次进行；本发明干作业成孔的孔径大，水泥砂浆强度高，方法简单，施工速度快，资源消耗少，有利于提高施工质量和效率，同时降低施工成本。
High-pressure grouting construction method for large underground engineering anti-floating anchor rod
The invention discloses a high-pressure grouting construction method for a large underground engineering anti-floating anchor rod, relates to the technical field of building structures, and aims to solve the problems of low construction speed, resource waste and low construction quality. The method comprises the steps of cement mortar preparation, plain concrete cushion layer construction, dry operation hole drilling, anti-floating anchor rod manufacturing and grouting, wherein the 28-day compressive strength of cement mortar is not smaller than 42.5 MPa, the thickness of a plain concrete cushion layer is 100 mm, a walking type long spiral drilling machine is adopted for drilling, the hole diameter is 250 mm, the anti-floating anchor rod is made of a hot-rolled ribbed steel bar and a round steel limiter and is centrally installed in a drilled dry operation hole, and grouting is carried out at twice by adopting a hole bottom slurry returning method. According to the invention, the dry operation hole is large in aperture, the cement mortar is high in strength, the method is simple, the construction speed is high, the resource consumption is low, the construction quality and efficiency can be improved, and meanwhile the construction cost is reduced.
本发明公开了一种大型地下工程抗浮锚杆高压注浆施工方法，涉及建筑结构技术领域，为解决施工速度慢、资源浪费和施工质量低的问题；本发明的步骤包括制备水泥砂浆、素砼垫层施工、钻干作业成孔、制作抗浮锚杆和注浆，其中水泥砂浆28天抗压强度不小于42.5MPa，素砼垫层厚100mm，钻孔采用步履式长螺旋钻机，孔径250mm，抗浮锚杆由热轧带肋钢筋和圆钢限位器制成且居中安装在钻干作业成孔中，注浆采用孔底返浆法分两次进行；本发明干作业成孔的孔径大，水泥砂浆强度高，方法简单，施工速度快，资源消耗少，有利于提高施工质量和效率，同时降低施工成本。
High-pressure grouting construction method for large underground engineering anti-floating anchor rod
一种大型地下工程抗浮锚杆高压注浆施工方法
WANG MINGCHAO (Autor:in)
11.06.2021
Patent
Elektronische Ressource
Chinesisch
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