CN113502835A - Wet cellular assembled gridwork roof beam slope protection structure of connecting - Google Patents

Wet cellular assembled gridwork roof beam slope protection structure of connecting Download PDF

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Publication number
CN113502835A
CN113502835A CN202110767336.0A CN202110767336A CN113502835A CN 113502835 A CN113502835 A CN 113502835A CN 202110767336 A CN202110767336 A CN 202110767336A CN 113502835 A CN113502835 A CN 113502835A
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CN
China
Prior art keywords
prefabricated
node
lattice
nodes
slope protection
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
Application number
CN202110767336.0A
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Chinese (zh)
Inventor
唐小微
王晨牟
畅宇文
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Dalian University of Technology
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Dalian University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to CN202110767336.0A priority Critical patent/CN113502835A/en
Publication of CN113502835A publication Critical patent/CN113502835A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/14Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/16Sealings or joints
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • E02D17/205Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads

Abstract

The invention belongs to the technical field of lattice slope protection and provides a wet-connection honeycomb assembled lattice beam slope protection structure. The cellular fabricated lattice beam slope protection structure comprises prefabricated nodes and lattice beams with rectangular sections; the prefabricated node comprises a middle node and four side nodes, mortise holes are reserved on the side faces of the prefabricated node, and tenons are formed on the side face ends of the prefabricated lattice beam locally; mortise and tenon shape are trapezoidal, and the two is connected, and the overhanging reinforcing bar of plus prefabricated node and the overhanging reinforcing bar of prefabricated lattice beam pass through the steel casing pipe and connect and finally form cellular assembled lattice beam slope protection structure. The wet-connection honeycomb fabricated grid beam slope protection structure is assembled and installed on site, the construction speed is high, the construction period is shortened, and meanwhile the engineering quality is ensured; the connection mode of the nodes and the lattice beams is simple, and manpower and material resources are saved; the honeycomb shape is adopted, and the minimum lattice structure is used under the condition of achieving the same reinforcing effect.

Description

Wet cellular assembled gridwork roof beam slope protection structure of connecting
Technical Field
The invention belongs to the technical field of lattice slope protection, and relates to a wet-connection honeycomb assembled lattice beam slope protection structure.
Background
The lattice anchoring technology is widely applied to reinforcing and protecting road and railway embankments and water diversion engineering side slopes. The traditional lattice anchoring technology is mainly carried out by adopting a mode of cast-in-place concrete lattice beams, and the problems that the engineering period is long, the engineering quality cannot be guaranteed and the like exist. Meanwhile, the engineering application practice of the lattice anchoring technology is prior to theoretical research, so that the engineering structure design is often unreasonable. The lattice beam is seriously damaged due to the fact that the lattice beam is acted by the natural environment on the earth surface for a long time and the phenomenon of ultra-long service exists in partial engineering, so that a new structure capable of efficiently and quickly replacing the existing damaged structure is urgently needed to quickly reinforce the side slope.
Disclosure of Invention
Aiming at the problems of the lattice beam in the prior lattice anchoring technology, the invention provides a wet-connection honeycomb fabricated lattice beam slope protection structure, which solves the problems of long work period and incapability of ensuring the engineering quality in the prior engineering and can realize the rapid reinforcement of the prior slope.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a wet-connection honeycomb fabricated grid beam slope protection structure comprises prefabricated nodes and prefabricated grid beams 21, wherein the cross sections of the prefabricated grid beams 21 are rectangular, corresponding reinforcement cages and overhanging reinforcements are uniformly distributed in the prefabricated grid beams 21, and the outermost parts of the prefabricated grid beams are concrete protection layers; the prefabricated nodes comprise a middle node 11, a first edge node 12, a second edge node 13, a third edge node 14 and a fourth edge node 15; the middle nodes 11 have three supporting points and are arranged at intervals of 120 degrees; the first edge node 12 has two pivot points, and the included angle of the two pivot points is 120 degrees; the second side node 13 has three pivot points, wherein two pivot points are positioned on the same straight edge, and the included angle between the other pivot point and the straight edge is 60 degrees; three 14 side nodes share two supporting points, and the included angle between the two supporting points is 90 degrees; the four side nodes 15 have three supporting points, wherein two supporting points are positioned on the same straight edge, and the included angle between the other supporting point and the straight edge is 90 degrees; an anchoring channel is reserved at the intersection point of each fulcrum of the prefabricated node, is in an inverted frustum shape, and is matched with an inverted frustum-shaped anchoring block 31; the outer side and the bottom of the inverted round platform-shaped anchoring block 31 are made of steel, and the middle of the inverted round platform-shaped anchoring block is poured with concrete; an anchor rod hole 311 is reserved in the middle of the inverted circular truncated cone-shaped anchoring block 31 and is fixed with an anchor rod; mortises are reserved on the side faces of the prefabricated nodes, tenons 211 are formed on the side ends of the prefabricated lattice beams 21 locally, and the mortises are matched with the tenons 211 to realize connection of the prefabricated nodes and the prefabricated lattice beams 21; the steel sleeve 41 is located at the end of the prefabricated node overhanging steel bar, the prefabricated node overhanging steel bar and the prefabricated lattice beam overhanging steel bar 212 are connected through the steel sleeve 41, a concrete protective layer is poured on the surface layer of the steel sleeve 41, and finally the honeycomb assembly type lattice beam slope protection structure is formed.
Through the connection of prefabricated node and prefabricated lattice beam 21, finally form cellular lattice slope protection structure, with the stock comprehensive application, realize the quick reinforcement to the side slope.
The mortise reserved at the prefabricated node is connected with the tenon at the end part of the prefabricated lattice beam 21, so that the prefabricated node is smoothly and accurately combined with the prefabricated lattice beam 21.
The prefabricated nodes and the overhanging steel bars of the prefabricated lattice beam 21 are connected through steel sleeves, and the continuity of the stressed steel bars is guaranteed.
The prefabricated nodes and the prefabricated lattice beam 21 are positioned and poured through mortise and tenon 211, and the safety of the structure is guaranteed.
The construction method of the wet connection honeycomb assembly type lattice beam slope protection structure comprises the following steps:
step 1, prefabricating corresponding prefabricated nodes and prefabricated lattice beams in a factory, maintaining, and conveying finished products to a construction site after requirements are met;
step 2, cleaning a side slope, leveling the slope surface, determining the placing positions of the prefabricated nodes and the prefabricated lattice beams, and excavating a skeleton foundation groove;
step 3, placing prefabricated nodes at the positions of the node foundation grooves, enabling anchor rods to penetrate through anchoring channels and anchoring blocks, fixing the nodes on the side slopes, and placing prefabricated lattice beams between adjacent nodes;
step 4, connecting the overhanging steel bars between the prefabricated lattice beam and the nodes through steel sleeves;
step 5, erecting a formwork at the joint of the prefabricated node and the prefabricated lattice beam, and pouring concrete to form the structure into a whole; curing the concrete, and removing the formwork after the strength meets the requirement;
and 6, tensioning the anchor rod in the middle of the node, and supporting a mold for grouting and sealing the anchor.
The invention has the beneficial effects that: the wet-connection honeycomb assembly type lattice beam slope protection structure adopts the form of prefabricated nodes and prefabricated lattice beams, is assembled and installed on site, is high in construction speed, shortens construction period and ensures engineering quality. The connection mode of the prefabricated nodes and the prefabricated lattice beams is simple, the arrangement of staff on a construction site is reduced, and manpower and material resources are saved.
This cellular assembled gridwork slope protection structure can be prefabricated at the mill, improves utilization of raw materials, reduces building rubbish's production, is favorable to ecological environment protection.
The cellular assembled lattice beam slope protection structure adopts a cellular structure, and uses the least lattice structure under the condition of achieving the same reinforcing effect.
Drawings
FIG. 1 is a schematic structural view of a prefabricated node and a prefabricated lattice beam after the integral assembly is completed;
FIG. 2 is a schematic structural diagram of the prefabricated nodes and the prefabricated lattice beam integrally assembled to be poured;
FIG. 3 is a schematic diagram of an intermediate node;
FIG. 4 is a schematic diagram of an edge node;
FIG. 5 is a schematic diagram of an edge node two;
FIG. 6 is a schematic diagram of an edge node III;
FIG. 7 is a schematic diagram of edge node four;
FIG. 8 is a schematic view of a frustum-shaped anchor block;
fig. 9 is a schematic view of a prefabricated lattice beam.
In the figure, 11, intermediate nodes; 111. an intermediate node anchoring channel; 112. middle node mortise; 113. a middle node steel reinforcement cage; 114. the middle node extends outwards to form a steel bar; 115. an intermediate node protective layer; 12. a first edge node; 121. the side node is provided with an anchoring channel; 122. a mortise is formed in each edge node; 123. a reinforcement cage is arranged at the edge node; 124. an overhanging steel bar of the edge node I; 125. a protective layer at the edge node; 13. a second edge node; 131. the second side node is used for anchoring the channel; 132. two-mortise hole of edge node; 133. a second reinforcement cage is connected with the edge node; 134. two extending steel bars of the edge nodes; 135. a second edge node protective layer; 14. a third edge node; 141. three anchoring channels are arranged at the side nodes; 142. side node three-mortise; 143. three steel reinforcement cages are arranged at the edge nodes; 144. the third edge node extends outwards to form a steel bar; 145. three protective layers of edge nodes; 15. a fourth edge node; 151. four anchoring channels are arranged at the side nodes; 152. four-mortise of edge node; 153. four steel reinforcement cages are arranged at the side nodes; 154. four outwards extending steel bars of the side nodes; 155. four protective layers of edge nodes; 21. prefabricating a lattice beam; 211. a tenon; 212. prefabricating a latticed beam overhanging steel bar; 213. prefabricating a lattice beam reinforcement cage; 214. prefabricating a lattice beam protective layer; 31. an inverted truncated cone-shaped anchoring block; 311. an anchor rod hole; 41. a steel casing.
Detailed Description
For a better understanding of this patent, specific embodiments of the invention are described below:
the following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the scope of the present invention defined and defined by the appended claims, and all matters produced by the invention using the inventive concept are protected.
Examples
As shown in fig. 1, the prefabricated structure comprises two parts, namely a prefabricated node and a prefabricated lattice beam, the overhanging length of the prefabricated node is designed according to actual needs, the prefabricated node comprises a middle node 111, a middle node mortise 112, middle node overhanging steel bars 114, a middle node steel bar cage 113 and a middle node protective layer 115, an inverted round platform-shaped anchoring channel is reserved in the middle of the node, and the mortise is trapezoidal. The ends of the intermediate node overhanging steel bars 114 are provided with steel sleeves 41 for connection with the overhanging steel bars of the prefabricated lattice beam. The prefabricated lattice beam mainly comprises a tenon 211 and prefabricated latticesThe structure beam comprises structure beam overhanging steel bars 212, a prefabricated lattice beam steel reinforcement cage 213 and a prefabricated lattice beam protection layer 214. The concrete strength of the prefabricated lattice beam is not less than C20, and the size of the longitudinal bar is not less thanThe size of the stirrup is not less thanThe concrete protective layer is not less than 30mm, and the length of the beam is selected to be 2-4 m.
The anchor channel of prefabricated node is inverted frustum form, puts into the anchor piece, can guarantee the engineering quality better, realizes the connection and the biography power of stock and prefabricated lattice beam, simultaneously, also can reserve the slant anchor channel when prefabricated node, and corresponding preparation slope anchor piece realizes the requirement of different anchor angles. And after the anchor rod is tensioned, pouring and grouting are carried out on the anchor rod hole, and all the structures are connected into a whole, so that the requirement of lattice anchoring is met.
The detailed construction method of the structure comprises the following steps:
and step one, performing corresponding calculation and design according to the slope condition, completing reinforcement distribution of the prefabricated nodes and the prefabricated lattice beams, and performing production of the prefabricated nodes and the prefabricated lattice beams according to the design. If the existing slope supporting structure is replaced, the length of the prefabricated lattice beam is matched with the distance between the existing anchor rods. Maintaining according to the standard after the prefabrication of the components is finished, and conveying to a construction site after the standard is reached;
and step two, finishing the side slope field, cleaning up the floating soil on the surface of the side slope to ensure that the surface of the field is generally flat, determining the positions of corresponding anchoring points and prefabricated lattice beams according to design measurement, excavating foundation trenches according to the determined positions and flattening the side slope again. If the existing side slope supporting structure is replaced, the existing side slope supporting structure needs to be cleaned, and the side slope is leveled, so that the new structural requirements are met.
And step three, drilling and laying anchor rods according to the designed anchor rod positions, and after the anchor rods are installed, placing prefabricated nodes at corresponding positions to enable the anchor rods to penetrate through anchoring channels 111 of the prefabricated nodes to fix the anchor rods. And (3) hoisting corresponding prefabricated lattice beams 21 around the prefabricated nodes, so that the tenons 211 of the prefabricated lattice beams are connected into the mortises of the prefabricated nodes, and the prefabricated lattice beams and the prefabricated nodes are positioned. The overhanging steel bars 212 of the prefabricated lattice girder and the overhanging steel bars 114 of the prefabricated nodes are connected by means of steel sleeves 41.
And step four, repeating the steps, and installing the prefabricated lattice beams and the nodes at the positions of each corresponding prefabricated node and each corresponding prefabricated lattice beam, so that the framework lap joint of the side slope supporting structure is realized, and the flatness of the whole structure is ensured.
And fifthly, formwork erecting is carried out at the joint of the prefabricated node and the prefabricated lattice beam, the upper part of the prefabricated lattice beam is pulled, the prefabricated lattice beam after pouring is ensured to be flush with the surface of the node, concrete is poured, and the prefabricated lattice beam is vibrated while pouring, so that the engineering quality is ensured. And (5) curing the concrete after pouring is finished, and removing the formwork after the requirement is met.
And step six, tensioning the anchor rod, and supporting a formwork again, grouting and sealing the anchor to realize the final side slope supporting structure.

Claims (3)

1. The wet-connection honeycomb assembly type lattice beam slope protection structure is characterized by comprising prefabricated nodes and prefabricated lattice beams (21), wherein the cross sections of the prefabricated lattice beams (21) are rectangular, the outermost parts of the prefabricated lattice beams are concrete protection layers, reinforcing cages and overhanging reinforcing steel bars are uniformly distributed in the prefabricated lattice beams, and the overhanging reinforcing steel bars are positioned in the reinforcing cages; the prefabricated nodes comprise a middle node (11), a first edge node (12), a second edge node (13), a third edge node (14) and a fourth edge node (15); the middle nodes (11) have three supporting points which are arranged at intervals of 120 degrees; the first edge node (12) has two pivot points, and the included angle of the two pivot points is 120 degrees; the second side node (13) has three pivot points, wherein two pivot points are positioned on the same straight edge, and the included angle between the other pivot point and the straight edge is 60 degrees; the third (14) side node has two pivot points, and the included angle of the two pivot points is 90 degrees; the four (15) side nodes have three pivot points, wherein two pivot points are positioned on the same straight edge, and the included angle between the other pivot point and the straight edge is 90 degrees; an anchoring channel is reserved at the intersection point of each fulcrum of the prefabricated node, is in an inverted frustum shape, and is matched with an inverted frustum-shaped anchoring block (31) with a corresponding size; an anchor rod hole (311) is reserved in the middle of the inverted circular truncated cone-shaped anchoring block (31) and is fixed with an anchor rod; mortise holes are reserved on the side faces of the prefabricated nodes, tenons (211) are formed at the side face ends of the prefabricated lattice beams (21) locally, and the mortise holes are matched with the tenons (211) to realize the connection of the prefabricated nodes and the prefabricated lattice beams (21); the steel sleeve (41) is located the overhanging reinforcing bar tip of prefabricated node, and the overhanging reinforcing bar of prefabricated node and the overhanging reinforcing bar of prefabricated lattice beam (212) are connected through steel sleeve (41), finally form cellular assembled lattice beam slope protection structure.
2. A wet connect honeycomb fabricated grid slope protection structure as claimed in claim 1, wherein said mortise and tenon (211) are trapezoidal in shape.
3. A wet connect cellular assembled grid slope protection structure according to claim 1 or 2, wherein the outside and bottom of the inverted truncated cone-shaped anchoring block (31) are made of steel and the middle is made of concrete.
CN202110767336.0A 2021-07-07 2021-07-07 Wet cellular assembled gridwork roof beam slope protection structure of connecting Pending CN113502835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110767336.0A CN113502835A (en) 2021-07-07 2021-07-07 Wet cellular assembled gridwork roof beam slope protection structure of connecting

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Application Number Priority Date Filing Date Title
CN202110767336.0A CN113502835A (en) 2021-07-07 2021-07-07 Wet cellular assembled gridwork roof beam slope protection structure of connecting

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114182744A (en) * 2021-12-31 2022-03-15 苏州大学 Degradable hexagonal ecological slope protection device and slope protection method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018009430A (en) * 2016-07-12 2018-01-18 株式会社サンライズ Device and method for constructing retaining wall in disaster-relief work
CN109024632A (en) * 2018-09-14 2018-12-18 南华大学 A kind of the precast lattice beam structure and assembly monolithic construction method of slope reinforcement
CN109487803A (en) * 2018-11-16 2019-03-19 西南交通大学 A kind of assembled skeleton slope protection and its construction method
CN210177522U (en) * 2019-05-30 2020-03-24 广东大潮高速公路有限公司 Ecological slope protection structure of prefabricated assembled anchor rope lattice beam
CN213267936U (en) * 2020-07-24 2021-05-25 内蒙古蒙创生态技术有限公司 Assembled bee lattice greening protective framework
CN112921994A (en) * 2021-01-28 2021-06-08 杭州泰川建设技术有限公司 Lattice beam structure and construction method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018009430A (en) * 2016-07-12 2018-01-18 株式会社サンライズ Device and method for constructing retaining wall in disaster-relief work
CN109024632A (en) * 2018-09-14 2018-12-18 南华大学 A kind of the precast lattice beam structure and assembly monolithic construction method of slope reinforcement
CN109487803A (en) * 2018-11-16 2019-03-19 西南交通大学 A kind of assembled skeleton slope protection and its construction method
CN210177522U (en) * 2019-05-30 2020-03-24 广东大潮高速公路有限公司 Ecological slope protection structure of prefabricated assembled anchor rope lattice beam
CN213267936U (en) * 2020-07-24 2021-05-25 内蒙古蒙创生态技术有限公司 Assembled bee lattice greening protective framework
CN112921994A (en) * 2021-01-28 2021-06-08 杭州泰川建设技术有限公司 Lattice beam structure and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114182744A (en) * 2021-12-31 2022-03-15 苏州大学 Degradable hexagonal ecological slope protection device and slope protection method thereof

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