Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tunnel bottom reinforcement treatment method for tunnel crossing large filling karst cave
The invention discloses a tunnel bottom reinforcement treatment method for a tunnel to pass through a large filling karst cave, which comprises the steps of cast-in-place pile position measurement and lofting, drilling, drilling, grouting and tunnel bottom construction, and adopts a reinforcing mesh and a steel pipe to jointly support the cast-in-place pile, so that the mechanical property of the cast-in-place pile is greatly improved; better strength, toughness and fracture resistance are achieved; when a pile hole is drilled, a reinforcing mesh follow-up method is adopted, soil and stones on the hole wall are prevented from falling into the pile hole due to vibration, and the drilling efficiency is improved; according to the cast-in-place pile, the openings are formed in the cylindrical reinforcing mesh, so that a drill bit is embedded into soil and stone on the hole wall of the pile hole while lifting the drill bit, the stability of the pile hole is further improved, the overall strength of the cast-in-place pile is improved, the cast-in-place pile is combined with a concrete foundation of the pile top to form a reinforcing structure of the tunnel bottom, and the good bearing capacity and reinforcing effect are achieved. The method has the advantages that the pile is not easy to break, the hole collapse phenomenon can be effectively controlled, and the reinforcing effect is good.
本发明公开了一种隧洞穿越大型充填溶洞的隧底加固处理方法，包括灌注桩桩位测量放样、钻孔、出钻、注浆、隧洞隧底施工的步骤，采用钢筋网和钢管共同对灌注桩进行支撑，大幅提高了灌注桩的力学性能，具有更好的强度、韧性以及抗折断能力；在桩孔进行钻孔时，采用了钢筋网跟进的方法，防止孔壁上的土石由于振动而落入桩孔，提高钻孔效率；在筒状的钢筋网上设置了开口，使得钻头在提钻的同时其嵌入桩孔孔壁的土石内，进一步提高了桩孔的稳定性，提高了灌注桩的整体强度，与桩顶的混凝土地基结合形成隧洞隧底的加固结构，具有较好的承载能力和加固效果。本发明具有不易断桩，能有效控制塌孔现象，加固效果好的优点。
Tunnel bottom reinforcement treatment method for tunnel crossing large filling karst cave
The invention discloses a tunnel bottom reinforcement treatment method for a tunnel to pass through a large filling karst cave, which comprises the steps of cast-in-place pile position measurement and lofting, drilling, drilling, grouting and tunnel bottom construction, and adopts a reinforcing mesh and a steel pipe to jointly support the cast-in-place pile, so that the mechanical property of the cast-in-place pile is greatly improved; better strength, toughness and fracture resistance are achieved; when a pile hole is drilled, a reinforcing mesh follow-up method is adopted, soil and stones on the hole wall are prevented from falling into the pile hole due to vibration, and the drilling efficiency is improved; according to the cast-in-place pile, the openings are formed in the cylindrical reinforcing mesh, so that a drill bit is embedded into soil and stone on the hole wall of the pile hole while lifting the drill bit, the stability of the pile hole is further improved, the overall strength of the cast-in-place pile is improved, the cast-in-place pile is combined with a concrete foundation of the pile top to form a reinforcing structure of the tunnel bottom, and the good bearing capacity and reinforcing effect are achieved. The method has the advantages that the pile is not easy to break, the hole collapse phenomenon can be effectively controlled, and the reinforcing effect is good.
本发明公开了一种隧洞穿越大型充填溶洞的隧底加固处理方法，包括灌注桩桩位测量放样、钻孔、出钻、注浆、隧洞隧底施工的步骤，采用钢筋网和钢管共同对灌注桩进行支撑，大幅提高了灌注桩的力学性能，具有更好的强度、韧性以及抗折断能力；在桩孔进行钻孔时，采用了钢筋网跟进的方法，防止孔壁上的土石由于振动而落入桩孔，提高钻孔效率；在筒状的钢筋网上设置了开口，使得钻头在提钻的同时其嵌入桩孔孔壁的土石内，进一步提高了桩孔的稳定性，提高了灌注桩的整体强度，与桩顶的混凝土地基结合形成隧洞隧底的加固结构，具有较好的承载能力和加固效果。本发明具有不易断桩，能有效控制塌孔现象，加固效果好的优点。
Tunnel bottom reinforcement treatment method for tunnel crossing large filling karst cave
一种隧洞穿越大型充填溶洞的隧底加固处理方法
WU YANG (Autor:in) / LYU JIANGUO (Autor:in) / PAN JINWEI (Autor:in) / RAO ZHENGMING (Autor:in) / WU XIAOFEI (Autor:in) / CHANG LIDONG (Autor:in) / HU JUN (Autor:in) / YU HAIYANG (Autor:in) / CHEN JIE (Autor:in)
27.02.2024
Patent
Elektronische Ressource
Chinesisch
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