Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
End expansion type anchor rod structure and construction method
The invention relates to an end expansion type anchor rod structure and a construction method, is used for enhancing the bearing capacity of an anchor rod, shortening the length of the anchor rod and saving labor and manufacturing cost, and belongs to the technical field of geotechnical engineering building foundation pre-stressed anchor rods. The device structurally comprises a countersunk head anchor cable, a bearing steel pipe, an expansion pipe, a jack and an anchor cable fixing device, after the full-casing drilling machine drills and forms a hole, the anchor cable penetrates through the expansion pipe and the bearing steel pipe, is sent to the bottom of the anchor hole and then is sent into the anchor hole along the casing pipe; the absolute position of the anchor cable is fixed by the anchor cable fixing device, the load is applied to the bearing steel pipe by the jack, the load is transmitted to the expansion pipe through the bearing steel pipe, the expansion pipe blades are opened along the angle of the countersunk head and inserted into the soil layer at the end of the anchor rod, and the purpose of end expansion is achieved. And after the bearing steel pipe is taken out in sections, grouting is conducted in the hole, and after the cement paste is solidified, the pre-stressed anchor cable is tensioned and locked. The method is simple in construction, small in soil disturbance and high in tensile bearing capacity, and reliable technical guidance can be provided for pile-anchor support and anti-floating anchor rod engineering.
本发明涉及一种端部膨胀式锚杆结构及施工方法，用于增强锚杆承载力，缩短锚杆长度，节省劳动力和造价，属于岩土工程建筑基础预应力锚杆技术领域。其结构包括沉头锚索、承载钢管、胀管、千斤顶和锚索固定装置；全套管钻机钻进成孔后，将锚索穿过胀管和承载钢管并送入锚孔底，再顺套管送至锚孔内；用锚索固定装置固定锚索的绝对位置，并用千斤顶向承载钢管施加荷载，通过承载钢管将荷载传至胀管，胀管叶片沿沉头的角度张开，插入锚杆端部土层中，达到端部膨胀的目的。再将承载钢管分节取出后，向孔内注浆，待水泥浆固化，对预应力锚索进行张拉锁定。本发明施工简单、对土体扰动小且抗拉承载力高，可为桩锚支护及抗浮锚杆工程提供可靠的技术指导。
End expansion type anchor rod structure and construction method
The invention relates to an end expansion type anchor rod structure and a construction method, is used for enhancing the bearing capacity of an anchor rod, shortening the length of the anchor rod and saving labor and manufacturing cost, and belongs to the technical field of geotechnical engineering building foundation pre-stressed anchor rods. The device structurally comprises a countersunk head anchor cable, a bearing steel pipe, an expansion pipe, a jack and an anchor cable fixing device, after the full-casing drilling machine drills and forms a hole, the anchor cable penetrates through the expansion pipe and the bearing steel pipe, is sent to the bottom of the anchor hole and then is sent into the anchor hole along the casing pipe; the absolute position of the anchor cable is fixed by the anchor cable fixing device, the load is applied to the bearing steel pipe by the jack, the load is transmitted to the expansion pipe through the bearing steel pipe, the expansion pipe blades are opened along the angle of the countersunk head and inserted into the soil layer at the end of the anchor rod, and the purpose of end expansion is achieved. And after the bearing steel pipe is taken out in sections, grouting is conducted in the hole, and after the cement paste is solidified, the pre-stressed anchor cable is tensioned and locked. The method is simple in construction, small in soil disturbance and high in tensile bearing capacity, and reliable technical guidance can be provided for pile-anchor support and anti-floating anchor rod engineering.
本发明涉及一种端部膨胀式锚杆结构及施工方法，用于增强锚杆承载力，缩短锚杆长度，节省劳动力和造价，属于岩土工程建筑基础预应力锚杆技术领域。其结构包括沉头锚索、承载钢管、胀管、千斤顶和锚索固定装置；全套管钻机钻进成孔后，将锚索穿过胀管和承载钢管并送入锚孔底，再顺套管送至锚孔内；用锚索固定装置固定锚索的绝对位置，并用千斤顶向承载钢管施加荷载，通过承载钢管将荷载传至胀管，胀管叶片沿沉头的角度张开，插入锚杆端部土层中，达到端部膨胀的目的。再将承载钢管分节取出后，向孔内注浆，待水泥浆固化，对预应力锚索进行张拉锁定。本发明施工简单、对土体扰动小且抗拉承载力高，可为桩锚支护及抗浮锚杆工程提供可靠的技术指导。
End expansion type anchor rod structure and construction method
一种端部膨胀式锚杆结构及施工方法
SONG JIE (Autor:in) / LI KAI (Autor:in) / WU TAO (Autor:in) / KANG ZENGZHU (Autor:in) / LIU GUANGLEI (Autor:in) / WU SIYU (Autor:in)
17.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
EXPANSION ANCHOR, ANCHOR CONSTRUCTION TOOL AND ANCHOR CONSTRUCTION METHOD
| Europäisches Patentamt | 2018
Self-expansion bag type expansion anchor rod supporting structure and construction method
| Europäisches Patentamt | 2023
Prestressed bag type expansion anchor rod construction method
| Europäisches Patentamt | 2024
Recyclable FRP anchor rod with expansion type anchor head and construction method
| Europäisches Patentamt | 2023
Expansion shell type anchor cable and construction method thereof
| Europäisches Patentamt | 2021