CN110004938A - A kind of foundation pit side wall structure reinforcement support device - Google Patents
A kind of foundation pit side wall structure reinforcement support device Download PDFInfo
- Publication number
- CN110004938A CN110004938A CN201910239169.5A CN201910239169A CN110004938A CN 110004938 A CN110004938 A CN 110004938A CN 201910239169 A CN201910239169 A CN 201910239169A CN 110004938 A CN110004938 A CN 110004938A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- wall
- pit side
- side wall
- suspension device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002787 reinforcement Effects 0.000 title abstract description 16
- 239000002689 soil Substances 0.000 claims abstract description 43
- 239000004568 cement Substances 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 7
- 239000000725 suspension Substances 0.000 claims 7
- 238000012423 maintenance Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 239000007921 spray Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000011378 shotcrete Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明属于基坑支护技术领域，公开了一种基坑侧壁结构加固支护装置，用于为了解决现有基坑支护装置未考虑基坑侧壁内的预应力管桩对基坑侧壁变形影响的问题。本发明通过在基坑侧壁内设置注浆孔，并在注浆孔内投放入土钉并灌注水泥浆形成一体结构，然后通过钢绞线与本身在基坑侧壁内的预应力管桩连接达到共同受力的目的，不仅能够提高抗剪能力，同时相比于现有技术基坑侧壁采用普通的喷锚支护，还能够达到降低锚杆施工工作量的目的，从而降低基坑侧壁支护的成本。
The invention belongs to the technical field of foundation pit support, and discloses a foundation pit side wall structure reinforcement and support device, which is used to solve the problem that the existing foundation pit support device does not consider the effect of prestressed pipe piles in the foundation pit side wall on the foundation pit. The problem of sidewall deformation effects. In the invention, a grouting hole is arranged in the side wall of the foundation pit, and soil nails are placed in the grouting hole and the cement slurry is poured to form an integrated structure, and then the steel strand is connected with the prestressed pipe pile in the side wall of the foundation pit itself. To achieve the purpose of common stress, it can not only improve the shear resistance, but also achieve the purpose of reducing the construction workload of the anchor rod compared with the conventional spray anchor support for the side wall of the foundation pit in the prior art, thereby reducing the foundation pit side wall. The cost of wall support.
Description
技术领域technical field
本发明属于基坑侧壁加固技术领域，具体涉及一种基坑侧壁结构加固支护装置。The invention belongs to the technical field of foundation pit side wall reinforcement, and in particular relates to a foundation pit side wall structure reinforcement and support device.
背景技术Background technique
基坑支护，是为保证地下结构施工及基坑周边环境的安全，对基坑侧壁及周边环境采用的支挡、加固与保护措施。现有技术关于基坑支护的技术文献也较多，例如申请号为201720031646.5的实用新型专利公开了一种带有利于排水结构的基坑支护，包括基坑支护板，基坑支护板内部设置有锚杆，锚杆插入坡壁内部，基坑支护板与坡壁通过锚杆固定连接，基坑支护板一侧紧贴在坡壁上，基坑支护板另一侧设置有排水管，排水管穿过基坑支护板内部，且排水管与基坑支护板固定连 接，排水管前端设置有尼龙网，尼龙网包裹在排水管外侧，坡壁内部挖有滤水槽，尼龙网设置在滤水槽内，且滤水槽内部填充有碎石，基坑支护板左端设置有凸起，基坑支护板右端设置有凹槽，且凹槽与凸起相互配合设置，基坑支护板背部设置有加强筋；碎石的直径为3-5mm，锚杆和排水管均倾斜设置；凹槽 的内部设置有橡胶垫；基坑支护板为矩形，凸起和凹槽分别平行设置在基坑支护板两侧；加强筋包括第一加强筋和第二加强筋，第一加强筋和第二加强筋相互垂直设置，且第一加强筋和第二加强筋均与基坑支护板固定连接；第一加 强筋和第二加强筋至少设置有两组，且第一加强筋和第二加强筋均为槽钢制成，第一加强筋设置在相邻两组第二加强筋之间。Foundation pit support refers to the support, reinforcement and protection measures adopted for the side walls of the foundation pit and the surrounding environment in order to ensure the safety of the construction of the underground structure and the surrounding environment of the foundation pit. There are also many technical documents about foundation pit support in the prior art. For example, the utility model patent with the application number of 201720031646.5 discloses a foundation pit support with a drainage structure, including a foundation pit support plate, a foundation pit support An anchor rod is arranged inside the plate, the anchor rod is inserted into the inside of the slope wall, the foundation pit support plate and the slope wall are fixedly connected by the anchor rod, one side of the foundation pit support plate is closely attached to the slope wall, and the other side of the foundation pit support plate is attached to the slope wall. A drain pipe is provided, the drain pipe passes through the inside of the foundation pit support plate, and the drain pipe is fixedly connected to the foundation pit support plate. The front end of the drain pipe is provided with a nylon mesh, which is wrapped around the outside of the drain pipe, and a filter is dug inside the slope wall. The water tank, the nylon mesh is arranged in the water filter tank, and the inside of the water filter tank is filled with gravel, the left end of the foundation pit support plate is provided with a protrusion, the right end of the foundation pit support plate is provided with a groove, and the groove and the protrusion are arranged in cooperation with each other , the back of the foundation pit support plate is provided with reinforcing ribs; the diameter of the crushed stone is 3-5mm, and the anchor rod and the drainage pipe are set obliquely; the inside of the groove is provided with a rubber pad; The grooves are respectively arranged on both sides of the foundation pit support plate in parallel; the reinforcing ribs include a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are arranged perpendicular to each other, and the first reinforcing rib and the second reinforcing rib are arranged vertically. They are all fixedly connected to the foundation pit support plate; at least two groups of the first reinforcing rib and the second reinforcing rib are provided, and the first reinforcing rib and the second reinforcing rib are both made of channel steel, and the first reinforcing rib is arranged adjacent to Between the two sets of second stiffeners.
又例如申请号为201720348680.5的实用新型专利公开了一种深基坑支护装置，包括灌注桩和垂直基坑，垂直基坑边缘预设有灌注桩，灌注桩的顶部固定连接于支护连接梁，支护 连接梁的内侧通过支护主梁固定连接于支护支撑梁，支护连接梁和支 护支撑梁均固定连接于支撑柱的顶端，支撑柱的底端固定连接于垂直基坑的底部，垂直基的外侧设置有放坡基坑，放坡基坑的底部挖有一 环形引水槽；放坡基坑的坡面 上均匀插入有土钉，土钉与坡面垂直，且土钉上固定连接有支护面；支护面为混凝土 喷筑面，且支护面内预设有钢筋网；灌注桩沿着垂直 基坑的边缘均匀分布，且灌注桩的顶部朝向垂直基坑的一侧一体化设置有承接台座，承接台座固定连接于支护连接梁；灌注桩上固定连 接有与之垂直的土钉，土钉固定连接有加固面，加固面为预埋有钢 筋笼的混凝土筑件Another example is the utility model patent with the application number of 201720348680.5, which discloses a deep foundation pit support device, including a cast-in-place pile and a vertical foundation pit. The edge of the vertical foundation pit is preset with a cast-in-place pile, and the top of the cast-in-place pile is fixedly connected to the support connecting beam. The inner side of the supporting connecting beam is fixedly connected to the supporting supporting beam through the supporting main beam, the supporting connecting beam and the supporting supporting beam are fixedly connected to the top of the supporting column, and the bottom end of the supporting column is fixedly connected to the vertical foundation pit. At the bottom, a grading foundation pit is arranged on the outer side of the vertical foundation, and an annular water diversion groove is dug at the bottom of the grading foundation pit; soil nails are evenly inserted on the slope surface of the grading foundation pit, the soil nails are perpendicular to the slope surface, and the soil nails A support surface is fixedly connected; the support surface is a concrete sprayed surface, and a steel mesh is preset in the support surface; the cast-in-place piles are evenly distributed along the edge of the vertical foundation pit, and the top of the cast-in-place pile faces one end of the vertical foundation pit. The side is integrated with a receiving pedestal, which is fixedly connected to the supporting connecting beam; the cast-in-place pile is fixedly connected with soil nails perpendicular to it, and the soil nails are fixedly connected with a reinforcement surface, and the reinforcement surface is a concrete structure with pre-embedded steel cages. piece
申请号为201621209334.0的实用新型专利公开了一种基坑的支护结构，该支护的基坑由一中间基坑以及该中间基坑两侧的两侧基坑组成，并且中间基坑的深度小于两侧基坑，包括：在中间基坑基底标高下方的土方中打设有中间基坑的基础桩和两侧基坑的支护 桩；于中间基坑基底标高处设置有结构底板，该结构底板与前述基础桩和支护桩的顶 端相结合；在两侧基坑相对的支护桩间隙之间穿设有预应力的对拉锚索；于支护桩外侧设置有挂板；支护桩位于中间基坑的 外围；挂板包括复数个膨胀螺栓、 复数张钢筋网片以及混凝土层，其中膨胀螺栓纵向间隔设置在每根支护桩的外侧，且该膨 胀螺栓上挂设有钢筋网片，该相邻支护桩间隙的区域，以及支护桩外侧挂设的钢筋网片区 域设置有混凝土层；支护桩为密排 支护桩；结构底板由钢筋混凝土构 成；预应力的对拉锚索水平设 置；预应力的对拉锚索位置处的 支护桩外侧设有腰梁。The utility model patent with the application number of 201621209334.0 discloses a support structure for a foundation pit. The supported foundation pit is composed of a middle foundation pit and foundation pits on both sides of the middle foundation pit, and the depth of the middle foundation pit is It is smaller than the foundation pit on both sides, including: driving the foundation piles of the middle foundation pit and the supporting piles of the foundation pits on both sides in the earthwork below the base level of the middle foundation pit; The structural bottom plate is combined with the aforementioned foundation piles and the top of the supporting piles; prestressed anchor cables are arranged between the gaps between the supporting piles opposite to the foundation pits on both sides; hanging plates are arranged on the outside of the supporting piles; The guard pile is located on the periphery of the middle foundation pit; the hanging plate includes a plurality of expansion bolts, a plurality of steel mesh sheets and a concrete layer, wherein the expansion bolts are arranged at the outer side of each supporting pile at a longitudinal interval, and steel bars are hung on the expansion bolts Mesh, the area of the gap between the adjacent supporting piles and the area of the reinforced mesh hanging outside the supporting piles are provided with a concrete layer; the supporting piles are densely arranged supporting piles; the structural bottom plate is composed of reinforced concrete; The anchor cable is set horizontally; the outer side of the supporting pile at the position of the prestressed anchor cable is provided with a waist beam.
虽然现有技术中对于基坑支护的技术文献也较多，但是在具体施工过程中，部分基坑周围的侧壁内会有预应力管桩，而预应力管桩的存在会造成基坑变形。Although there are many technical documents on foundation pit support in the prior art, in the specific construction process, there will be prestressed pipe piles in the side walls around some foundation pits, and the existence of prestressed pipe piles will cause foundation pits. deformed.
发明内容SUMMARY OF THE INVENTION
本发明为了解决现有基坑支护装置未考虑基坑侧壁内的预应力管桩对基坑侧壁变形影响的问题，而提供一种基坑侧壁结构加固支护装置，通过技术改良，能够提高基坑侧壁的抗剪能力，提高基坑支护的稳固性。In order to solve the problem that the existing foundation pit support device does not consider the influence of the prestressed pipe piles in the foundation pit side wall on the deformation of the foundation pit side wall, the present invention provides a foundation pit side wall structure reinforcement and support device. , which can improve the shear resistance of the sidewall of the foundation pit and improve the stability of the foundation pit support.
为解决技术问题，本发明所采用的技术方案是：For solving the technical problem, the technical scheme adopted in the present invention is:
一种基坑侧壁结构加固支护装置，包括埋设在基坑侧壁内的预应力管桩，其特征在于，预应力管桩与基坑侧壁的边坡之间设有注浆孔，注浆孔内投放有伸入基坑底面之下的土钉，土钉内和土钉与注浆孔之间的间隙内灌入有水泥浆，土钉与注浆孔内的水泥浆养护凝固后形成一体结构并通过钢绞线与预应力管桩连接。A foundation pit sidewall structure reinforcement and support device, comprising a prestressed pipe pile embedded in the foundation pit sidewall, characterized in that a grouting hole is provided between the prestressed pipe pile and the side slope of the foundation pit sidewall, Soil nails protruding under the bottom surface of the foundation pit are placed in the grouting holes, cement slurry is poured into the soil nails and in the gaps between the soil nails and the grouting holes, and the soil nails and the cement slurry in the grouting holes are cured and solidified After that, an integrated structure is formed and connected with the prestressed pipe piles through steel strands.
所述基坑侧壁内设有多个倾斜设置的锚杆，所述锚杆伸入基坑侧壁内的长度从上之下逐渐减小。A plurality of inclined bolts are arranged in the side wall of the foundation pit, and the length of the bolts extending into the side wall of the foundation pit gradually decreases from top to bottom.
作为本发明一种优选的方式，各个锚杆相互平行设置。As a preferred mode of the present invention, each anchor rod is arranged parallel to each other.
所述基坑侧壁的边坡处铺设有钢筋网片，各个锚杆伸出基坑侧壁的边坡与钢筋网片连接并喷射有水泥混凝土层。The side slopes of the side walls of the foundation pit are laid with reinforced mesh sheets, and the side slopes of each anchor rod extending out of the side walls of the foundation pit are connected with the reinforced mesh sheets and sprayed with a cement concrete layer.
所述钢筋网片上间隔的设置有加固钢筋。Reinforcing steel bars are arranged at intervals on the reinforcing steel mesh sheets.
所述基坑侧壁的边坡上开设有多个排水孔。A plurality of drainage holes are opened on the slope of the side wall of the foundation pit.
位于预应力管桩与土钉之间的基坑侧壁顶面上开设有截水槽。A water intercepting groove is opened on the top surface of the side wall of the foundation pit between the prestressed pipe pile and the soil nail.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
本发明的一种基坑侧壁结构加固支护装置，包括埋设在基坑侧壁内的预应力管桩，预应力管桩与基坑侧壁边坡之间设有注浆孔，注浆孔内投放有伸入基坑底面之下的土钉，土钉内和土钉与注浆孔之间的间隙内灌入有水泥浆，土钉与注浆孔内的水泥浆养护凝固后形成一体结构并通过钢绞线与预应力管桩连接。本发明通过在基坑侧壁内设置注浆孔，并在注浆孔内投放入土钉并灌注水泥浆形成一体结构，然后通过钢绞线与本身在基坑侧壁内的预应力管桩连接达到共同受力的目的，不仅能够提高抗剪能力，同时相比于现有技术基坑侧壁采用普通的喷锚支护，还能够达到降低锚杆施工工作量的目的，从而降低基坑侧壁支护的成本。A foundation pit side wall structure reinforcement and support device of the present invention comprises a prestressed pipe pile embedded in the foundation pit sidewall, a grouting hole is provided between the prestressed pipe pile and the side slope of the foundation pit sidewall, and the grouting Soil nails that protrude into the bottom of the foundation pit are placed in the holes, and cement slurry is poured into the soil nails and the gap between the soil nails and the grouting holes. The soil nails and the cement slurry in the grouting holes are cured and solidified. One-piece structure and connected with prestressed pipe piles through steel strands. In the invention, a grouting hole is arranged in the side wall of the foundation pit, and soil nails are placed in the grouting hole and the cement slurry is poured to form an integrated structure, and then the steel strand is connected with the prestressed pipe pile in the side wall of the foundation pit itself. To achieve the purpose of common stress, it can not only improve the shear resistance, but also achieve the purpose of reducing the construction workload of the anchor rod compared with the conventional spray anchor support for the side wall of the foundation pit in the prior art, thereby reducing the foundation pit side wall. The cost of wall support.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is the structural representation of the present invention;
图2为本发明的钢筋网片的结构示意图；Fig. 2 is the structural representation of the reinforcement mesh sheet of the present invention;
图3为本发明一实施例的工程平面图；3 is a project plan view of an embodiment of the present invention;
图中标记：Ⅰ、基坑，2、基坑侧壁，3、基坑侧壁的边坡，4、预应力管桩，5、土钉，6、钢绞线，7、锚杆，8、截水槽，9、钢筋网片，10、排水孔，11、加固钢筋。Marked in the figure: 1, foundation pit, 2, side wall of foundation pit, 3, slope of side wall of foundation pit, 4, prestressed pipe pile, 5, soil nail, 6, steel strand, 7, anchor rod, 8 , Cut-off groove, 9, Reinforcement mesh, 10, Drainage hole, 11, Reinforcing steel bar.
具体实施方式Detailed ways
下面结合实施例对本发明作进一步的描述，所描述的实施例仅仅是本发明一部分实施例，并不是全部的实施例。基于本发明中的实施例，本领域的普通技术人员在没有做出创造性劳动前提下所获得的其他所用实施例，都属于本发明的保护范围。The present invention will be further described below with reference to the embodiments, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other used embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
结合附图，本发明的一种基坑侧壁结构加固支护装置，包括埋设在基坑侧壁2内的预应力管桩4，其中，预应力管桩4的下端位于基坑1底面之下的土体中，预应力管桩4与基坑侧壁的边坡之间设有注浆孔（附图中未画出），注浆孔内投放有伸入基坑1底面之下的土钉5，土钉5内和土钉5与注浆孔之间的间隙内灌入有水泥浆，土钉与注浆孔内的水泥浆养护凝固后形成一体结构并通过钢绞线6与预应力管桩4连接。在具体施工过程中，注浆孔的水泥浆养护后应达到M25强度的70%后，才能通过钢绞线与预应力管桩连接。在此需要说明的，钢绞线6连接在预应力管桩4和注浆孔内的土钉5的上端。With reference to the accompanying drawings, a foundation pit sidewall structure reinforcement and support device of the present invention includes a prestressed pipe pile 4 embedded in the foundation pit sidewall 2, wherein the lower end of the prestressed pipe pile 4 is located on the bottom surface of the foundation pit 1. In the lower soil body, a grouting hole (not shown in the accompanying drawings) is provided between the prestressed pipe pile 4 and the slope of the side wall of the foundation pit, and a grouting hole is placed in the grouting hole that extends under the bottom surface of the foundation pit 1. Soil nail 5, the soil nail 5 and the gap between the soil nail 5 and the grouting hole are filled with cement slurry, and the soil nail and the cement slurry in the grouting hole form an integrated structure after curing and solidification Prestressed pipe piles 4 are connected. In the specific construction process, the cement slurry in the grouting hole should reach 70% of the M25 strength after curing, and then it can be connected to the prestressed pipe pile through steel strands. It should be noted here that the steel strand 6 is connected to the prestressed pipe pile 4 and the upper end of the soil nail 5 in the grouting hole.
并且还需要说明的是，注浆孔的内径大于土钉的外径，即是说土钉的尺寸小与注浆孔的尺寸。例如在具体施工过程中，注浆孔的直径为150mm，则土钉选用直径为48mm，壁厚为3mm的土钉，从而通过灌入的水泥浆与土钉形成一个整体结构。It should also be noted that the inner diameter of the grouting hole is larger than the outer diameter of the soil nail, that is, the size of the soil nail is smaller than the size of the grouting hole. For example, in the specific construction process, the diameter of the grouting hole is 150mm, and the soil nails with a diameter of 48mm and a wall thickness of 3mm are used to form an integral structure through the poured cement slurry and the soil nails.
土钉的作用是为了提高抗剪能力。根据不同项目的实际情况，注浆孔内也可以不放入土钉，直接通过钢绞线将预应力管桩和注浆孔内的水泥柱进行连接，达到共同受力的目的。The role of soil nails is to improve shear resistance. According to the actual situation of different projects, soil nails may not be placed in the grouting holes, and the prestressed pipe piles and the cement columns in the grouting holes are directly connected by steel strands to achieve the purpose of common stress.
本发明的一种基坑侧壁结构加固支护装置，包括埋设在基坑侧壁内的预应力管桩，预应力管桩与基坑侧壁边坡之间设有注浆孔，注浆孔内投放有伸入基坑底面之下的土钉，土钉内和土钉与注浆孔之间的间隙内灌入有水泥浆，土钉与注浆孔内的水泥浆养护凝固后形成一体结构并通过钢绞线与预应力管桩连接。本发明通过在基坑侧壁内设置注浆孔，并在注浆孔内投放入土钉并灌注水泥浆形成一体结构，然后通过钢绞线与本身在基坑侧壁内的预应力管桩连接达到共同受力的目的，不仅能够提高抗剪能力，同时相比于现有技术基坑侧壁采用普通的喷锚支护，还能够达到降低锚杆施工工作量的目的，从而降低基坑侧壁支护的成本。A foundation pit side wall structure reinforcement and support device of the present invention comprises a prestressed pipe pile embedded in the foundation pit sidewall, a grouting hole is provided between the prestressed pipe pile and the side slope of the foundation pit sidewall, and the grouting Soil nails that protrude into the bottom of the foundation pit are placed in the holes, and cement slurry is poured into the soil nails and the gap between the soil nails and the grouting holes. The soil nails and the cement slurry in the grouting holes are cured and solidified. One-piece structure and connected with prestressed pipe piles through steel strands. In the invention, a grouting hole is arranged in the side wall of the foundation pit, and soil nails are placed in the grouting hole and the cement slurry is poured to form an integrated structure, and then the steel strand is connected with the prestressed pipe pile in the side wall of the foundation pit itself. To achieve the purpose of common stress, it can not only improve the shear resistance, but also achieve the purpose of reducing the construction workload of the anchor rod compared with the conventional spray anchor support for the side wall of the foundation pit in the prior art, thereby reducing the foundation pit side wall. The cost of wall support.
在具体实施过程中，预应力管桩4与土钉5之间也可以通过其他连接物进行连接，但在工程施工中，优先选用钢绞线进行连接。In the specific implementation process, the prestressed pipe piles 4 and the soil nails 5 can also be connected by other connecting objects, but in the engineering construction, steel strands are preferably used for connection.
所述基坑侧壁2内设有多个倾斜设置的锚杆7，例如当基坑侧壁的边坡3的坡率为1:0.6的时候，锚杆的倾斜角度为15°。所述锚杆7伸入基坑侧壁2内的长度从上之下逐渐减小。作为本发明一种优选的方式，各个锚杆7相互平行设置。The foundation pit side wall 2 is provided with a plurality of inclined bolts 7. For example, when the slope ratio of the side slope 3 of the foundation pit side wall is 1:0.6, the inclination angle of the bolts is 15°. The length of the anchor rod 7 extending into the side wall 2 of the foundation pit gradually decreases from top to bottom. As a preferred mode of the present invention, each anchor rod 7 is arranged parallel to each other.
所述基坑侧壁的边坡3处铺设有钢筋网片9，各个锚杆7伸出基坑侧壁的边坡3与钢筋网片10连接并喷射有水泥混凝土层。Reinforcing mesh sheets 9 are laid on the side slopes 3 of the side walls of the foundation pit, and each anchor rod 7 extends out of the side slopes 3 of the side walls of the foundation pit to be connected with the reinforced mesh sheets 10 and sprayed with a cement concrete layer.
作为本发明一种优选的方式，所述钢筋网片9上间隔的设置有加固钢筋11。As a preferred mode of the present invention, reinforcing steel bars 11 are provided at intervals on the reinforcing bar mesh 9 .
所述基坑侧壁的边坡3上开设有多个排水孔10。A plurality of drainage holes 10 are opened on the slope 3 of the side wall of the foundation pit.
其中喷锚支护指的是借高压喷射水泥混凝土和打入基坑侧壁中的金属锚杆的联合作用来对边坡进行加固，喷锚支护本身属于现有技术，本领域的技术人员都能明白和理解，在此不再赘述。Among them, the shotcrete support refers to the reinforcement of the slope by the combined action of high-pressure sprayed cement concrete and the metal bolts driven into the side walls of the foundation pit. The shotcrete support itself belongs to the prior art, and those skilled in the art can be understood and understood, and will not be repeated here.
位于预应力管桩4与土钉5之间的基坑侧壁2的顶面上开设有截水槽8，用于防止水流冲从基坑侧壁的边坡处流出。A water intercepting groove 8 is opened on the top surface of the side wall 2 of the foundation pit between the prestressed pipe pile 4 and the soil nail 5 to prevent the water flow from flowing out from the slope of the side wall of the foundation pit.
结合图3，图3为申请人在成都一工程项目，整个项目为一层地下室，在具体施工的过程中，采用分段进行，将AB段、CD段、DE段、EF段、FG段和GH段采用喷锚支护，其余段采用自然放坡。整个工程由于施工的难度较大，因此采用普通的喷锚支护的成本和工作量非常之大，锚杆的打入的工作量将非常之巨大。Combined with Fig. 3, Fig. 3 shows a project of the applicant in Chengdu. The whole project is a basement. The GH section is supported by spray anchors, and the rest of the section adopts natural grading. Due to the difficulty of construction of the whole project, the cost and workload of using ordinary shotcrete support is very large, and the workload of bolting will be very huge.
因此采用注浆孔并插入土钉的方式，并将土钉与基坑侧壁内的预应力管桩相互连接来达到共同受力的目的，从而达到基坑加固支护的作用，相比于现有技术采用普通喷锚支护的方式，能够大大降低锚杆的使用，从而降低支护的成本和工作量。Therefore, the method of grouting holes and inserting soil nails is adopted, and the soil nails and the prestressed pipe piles in the side wall of the foundation pit are connected to each other to achieve the purpose of common stress, so as to achieve the effect of reinforcement and support of the foundation pit. The prior art adopts the way of ordinary shotcrete anchor support, which can greatly reduce the use of anchor rods, thereby reducing the cost and workload of support.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239169.5A CN110004938A (en) | 2019-03-27 | 2019-03-27 | A kind of foundation pit side wall structure reinforcement support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239169.5A CN110004938A (en) | 2019-03-27 | 2019-03-27 | A kind of foundation pit side wall structure reinforcement support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004938A true CN110004938A (en) | 2019-07-12 |
Family
ID=67168568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239169.5A Pending CN110004938A (en) | 2019-03-27 | 2019-03-27 | A kind of foundation pit side wall structure reinforcement support device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110004938A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805049A (en) * | 2019-11-07 | 2020-02-18 | 武汉武建机械施工有限公司 | Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure |
| CN111535338A (en) * | 2020-06-05 | 2020-08-14 | 中铁十一局集团第二工程有限公司 | A kind of side slope support device and method thereof |
| CN114892675A (en) * | 2022-05-30 | 2022-08-12 | 浙江文华建设项目管理有限公司 | Foundation pit supporting structure with foundation pit construction parameter measuring function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220594A (en) * | 2007-11-30 | 2008-07-16 | 苏州二建建筑集团有限公司 | Building foundation pit supporting construction |
| CN103147442A (en) * | 2013-03-14 | 2013-06-12 | 中国华冶科工集团有限公司 | Ultra-deep foundation pit press-grouting pile and prestressed anchor combined supporting construction method |
| CN103590408A (en) * | 2013-11-25 | 2014-02-19 | 中国建筑股份有限公司 | Novel double-row pile beam vertical anchor supporting system and construction method thereof |
| CN203498842U (en) * | 2013-09-30 | 2014-03-26 | 中国建筑股份有限公司 | Pile beam vertical anchor supporting system used for foundation pit supporting |
| CN105113522A (en) * | 2015-09-22 | 2015-12-02 | 河南万泰建安开发有限公司 | Space composite supporting structure |
| CN205954638U (en) * | 2016-06-30 | 2017-02-15 | 大连理工大学 | Half semi -rigid flexible supporting construction of deep basal pit lateral wall |
| CN206408632U (en) * | 2017-01-19 | 2017-08-15 | 广东中森建设工程有限公司 | Foundation pit supporting construction for unilateral reinforcing side slope |
| CN108203983A (en) * | 2018-03-02 | 2018-06-26 | 中国五冶集团有限公司 | A kind of deep foundation pit supporting structure and method |
| CN210066763U (en) * | 2019-03-27 | 2020-02-14 | 中冶成都勘察研究总院有限公司 | Foundation pit side wall structure reinforcing and supporting device |
-
2019
- 2019-03-27 CN CN201910239169.5A patent/CN110004938A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220594A (en) * | 2007-11-30 | 2008-07-16 | 苏州二建建筑集团有限公司 | Building foundation pit supporting construction |
| CN103147442A (en) * | 2013-03-14 | 2013-06-12 | 中国华冶科工集团有限公司 | Ultra-deep foundation pit press-grouting pile and prestressed anchor combined supporting construction method |
| CN203498842U (en) * | 2013-09-30 | 2014-03-26 | 中国建筑股份有限公司 | Pile beam vertical anchor supporting system used for foundation pit supporting |
| CN103590408A (en) * | 2013-11-25 | 2014-02-19 | 中国建筑股份有限公司 | Novel double-row pile beam vertical anchor supporting system and construction method thereof |
| CN105113522A (en) * | 2015-09-22 | 2015-12-02 | 河南万泰建安开发有限公司 | Space composite supporting structure |
| CN205954638U (en) * | 2016-06-30 | 2017-02-15 | 大连理工大学 | Half semi -rigid flexible supporting construction of deep basal pit lateral wall |
| CN206408632U (en) * | 2017-01-19 | 2017-08-15 | 广东中森建设工程有限公司 | Foundation pit supporting construction for unilateral reinforcing side slope |
| CN108203983A (en) * | 2018-03-02 | 2018-06-26 | 中国五冶集团有限公司 | A kind of deep foundation pit supporting structure and method |
| CN210066763U (en) * | 2019-03-27 | 2020-02-14 | 中冶成都勘察研究总院有限公司 | Foundation pit side wall structure reinforcing and supporting device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805049A (en) * | 2019-11-07 | 2020-02-18 | 武汉武建机械施工有限公司 | Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure |
| CN110805049B (en) * | 2019-11-07 | 2021-05-11 | 武汉武建机械施工有限公司 | Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure |
| CN111535338A (en) * | 2020-06-05 | 2020-08-14 | 中铁十一局集团第二工程有限公司 | A kind of side slope support device and method thereof |
| CN114892675A (en) * | 2022-05-30 | 2022-08-12 | 浙江文华建设项目管理有限公司 | Foundation pit supporting structure with foundation pit construction parameter measuring function |
| CN114892675B (en) * | 2022-05-30 | 2024-03-26 | 文华工程咨询股份有限公司 | Foundation pit supporting structure with function of measuring foundation pit construction parameters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11976431B2 (en) | Methods for constructing tensionless concrete pier foundations and foundations constructed thereby | |
| CN106522270A (en) | Pile foundation and retaining wall anti-earthquake retaining structure comprising EPS buffer layers and construction method | |
| CN106013171B (en) | A kind of semi-rigid supporting construction semi-flexible and method of deep-foundation side wall | |
| CN101280564A (en) | Pit pile anchor breast wall concrete breast beam structure and construction method thereof | |
| CN108612110A (en) | A kind of Deep Foundation Pit of Metro Stations combined type construction method for supporting | |
| CN110004938A (en) | A kind of foundation pit side wall structure reinforcement support device | |
| CN107059882A (en) | Arch anchor net and Anchor-Pile Retaining Structure structure | |
| CN102304927B (en) | Prestress anchor cable buttress-type parapet suitable for rock substrate | |
| CN103334450A (en) | Construction method of pile precast slab retaining wall with drainage ditch | |
| CN110777802A (en) | Deep foundation pit high-low span supporting structure and construction method thereof | |
| CN205954638U (en) | Half semi -rigid flexible supporting construction of deep basal pit lateral wall | |
| CN106758852B (en) | Across foundation pit enclosure to the trestle construction technology of support beam | |
| CN113417300A (en) | Slope support system and construction method thereof | |
| CN110805049B (en) | Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure | |
| CN105464128B (en) | Prestress anchorage cable assembled pile plate wall protection construction method | |
| CN209722993U (en) | A kind of embankment side slope framework parts La Tuoding anchor slab supporting construction a little | |
| CN210066763U (en) | Foundation pit side wall structure reinforcing and supporting device | |
| CN218346208U (en) | Permanent side slope supporting structure based on reinforced concrete pile | |
| CN207314353U (en) | A kind of supporting construction applied to foundation pit | |
| CN202131610U (en) | Prestressed anchor rope buttress type dead wall applicable for rock foundation | |
| CN113668595B (en) | A rock anchor foundation for reducing soil erosion of a power transmission line and its construction method | |
| CN206337566U (en) | Foundation ditch vertical prestressing anchor pole supporting construction | |
| CN113137060B (en) | Water tank hoisting device of water tower and construction method thereof | |
| CN212248261U (en) | Foundation pit support structure using steel sheet piles and precast concrete piles | |
| CN108951652B (en) | Bridge-tunnel connection section deep foundation pit supporting structure and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190712 |