CN213926297U

CN213926297U - Prefabricated assembled lattice beam that can splice

Info

Publication number: CN213926297U
Application number: CN202022362104.0U
Authority: CN
Inventors: 侯刘锁; 贾海鹏; 李根强
Original assignee: Shenzhen Investigation and Research Institute Co ltd
Current assignee: Shenzhen Investigation and Research Institute Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-08-10
Anticipated expiration: 2030-10-21

Abstract

The utility model discloses a prefabricated assembled lattice girder that can splice, including multiunit girder and connect the secondary beam between the adjacent two girders, the girder bottom is provided with the floorbar, and the girder top is provided with the capping beam, the girder is formed by the concatenation of many girder modules head and the tail, and the girder module adopts the stock anchor in the side slope at the position that its concatenation is connected, the both ends of secondary beam are connected in the position of two girder module concatenation connections, girder module, secondary beam are prefabricated formula reinforced concrete roof beam. The prefabricated splicing assembly type lattice beam has the advantages of simple structure, short construction period, high construction efficiency, low construction difficulty and strength, low labor cost, good construction quality, good drainage effect, long engineering service life and the like, which are not possessed by the prior art.

Description

Prefabricated assembled lattice beam that can splice

Technical Field

The utility model relates to a side slope protection field, especially a prefabricated assembled lattice roof beam that can splice.

Background

In the field of slope protection, constructing a lattice beam structure is one of the most common protection projects.

In the traditional construction technology, the lattice beam engineering generally adopts the existing pouring mode for construction, and the engineering for pouring the lattice beam on site has the technical defects of long construction period, high construction difficulty, high time cost, low construction efficiency, high labor cost, poor drainage effect, poor construction quality consistency and the like.

In view of the above, the present invention provides a new technical solution to solve the existing technical drawbacks.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a prefabricated assembled lattice roof beam that can splice has solved and has deposited in the current lattice roof beam engineering that engineering time is long, the efficiency of construction is low, the construction degree of difficulty is high, the cost of labor is high, drainage effect is poor, construction quality is poor etc. technical defect.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a prefabricated assembled lattice girder that can splice, includes the multiunit girder and connects the secondary beam between the two adjacent girders, the girder bottom is provided with the floorbar, and the girder top is provided with the capping beam, the girder is formed by many girder modules head and the tail concatenation, and the girder module adopts the stock anchor in side slope at the position that its concatenation is connected, the both ends of secondary beam are connected in the position that two girder modules concatenation is connected, girder module, secondary beam are prefabricated formula reinforced concrete roof beam.

As an improvement of the technical scheme, the secondary beam is a reinforced concrete beam in a herringbone shape, the middle position of the secondary beam is high, the positions of the two ends of the secondary beam are low, and the two ends of the secondary beam are respectively connected to the main beam modules on the two adjacent main beams in a splicing mode.

As a further improvement of the above technical scheme, the upper and lower ends of the girder module are respectively provided with a girder upper connecting block and a girder lower connecting block, the girder upper connecting block forms a girder upper connecting concave position at the upper end of the girder module, the girder lower connecting block forms a girder lower connecting concave position at the lower end of the girder module, in the two mutually spliced girder modules, the girder upper connecting block on the girder module at the lower part is correspondingly clamped into the girder lower connecting concave position on the girder module at the upper part, and the girder lower connecting block on the girder module at the upper part is correspondingly clamped into the girder upper connecting concave position of the girder module at the lower part.

As a further improvement of the technical scheme, a main beam connecting piece is arranged on the main beam upper connecting block, a main beam connecting hole matched with the main beam connecting piece is formed in the main beam lower connecting block, and the main beam connecting piece is matched with the main beam connecting hole and connects two adjacent main beam modules in a splicing manner.

As a further improvement of the above technical scheme, the secondary beam connecting pieces are respectively arranged at two ends of the secondary beam, the primary beam module is provided with a secondary beam connecting jack adapted to the secondary beam connecting pieces, and the secondary beam connecting pieces are correspondingly inserted into the secondary beam connecting jacks to fixedly connect the primary beam module and the secondary beam.

As a further improvement of the technical scheme, two sides of the outer wall surface of the main beam module are provided with main beam water chute baffles, two main beam water chute baffles form a main beam water chute on the outer wall surface of the main beam module, and the main beam water chutes on the main beam modules of the same group of main beams are mutually communicated; the lower edge of the outer wall surface of the secondary beam is provided with a secondary beam water chute baffle, a secondary beam water chute is formed on the outer wall surface of the secondary beam by the secondary beam water chute baffle, and the secondary beam water chute is communicated with the main beam water chutes on the main beam modules connected to the two ends of the secondary beam.

As a further improvement of the above technical scheme, the bottom beam is provided with a bottom beam water chute, the capping beam is provided with a top beam intercepting ditch, the bottom beam is fixedly connected with the lower end of the main beam module at the lowest part in the main beam, the bottom beam water chute is communicated with the main beam water chute, and the capping beam is fixedly connected with the upper end of the main beam module at the highest part in the main beam.

As a further improvement of the technical scheme, the two ends of the girder module are both provided with girder anchoring holes, the inner end of the anchor rod is anchored on a slope, and the outer end of the anchor rod penetrates through the girder anchoring holes of the girder module and is locked by an anchor rod backing plate and an anchor rod locking nut.

As a further improvement of the technical scheme, the diameter of the anchor rod (5) is 25-32mm, and the stress range of the anchor rod (5) after the locking of the anchor rod locking nut (52) is 120-200 kN.

As a further improvement of the above technical solution, a grouting covering layer is disposed at a splicing connection portion of the two main beam modules and the secondary beam of the main beam, the grouting covering layer is used for covering the main beam modules, the exposed interfaces and the connectors of the secondary beam during splicing connection, the anchor rod is completely covered by the grouting covering layer or the outer end of the anchor rod is partially exposed from the grouting covering layer, and the exposed part of the anchor rod from the grouting covering layer is used as a monitoring point of the whole lattice beam.

The utility model has the advantages that: the utility model provides a prefabricated assembled lattice beam capable of being spliced, which adopts a main beam module, a secondary beam, a bottom beam and a capping beam to be spliced into a whole, thereby greatly saving the construction time in the actual application, effectively improving the construction efficiency, reducing the construction difficulty and the construction cost, having good quality consistency of the lattice beam and avoiding the occurrence of larger quality flaws; in addition, the main beam water guide groove and the secondary beam water guide groove are respectively arranged on the main beam and the secondary beam, so that the drainage performance is improved in practical application, the protection effect on the side slope is better, and the service life of the lattice beam is prolonged.

To sum up, this kind of prefabrication can splice assembled lattice beam has solved among the current lattice beam engineering that the engineering time is long, the efficiency of construction is low, the construction degree of difficulty is high, the cost of labor is high, the drainage effect is poor, construction quality subalternation technical defect.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic assembly view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of the connection between the main beam and the secondary beam of the present invention;

fig. 5 is a structural exploded view of the main beam module, the secondary beam and the anchor rod of the present invention;

FIG. 6 is a schematic structural view of the middle bottom beam of the present invention;

fig. 7 is a schematic structural diagram of the middle cap of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The technical features of the present invention can be combined interactively without conflicting with each other, as shown in fig. 1 to 7.

The utility model provides a prefabricated assembled lattice girder that can splice, includes multiunit girder 1 and connects secondary beam 2 between the adjacent two

girders

1, 1 bottom of girder is provided with

floorbar

3, and 1 top of girder is provided with capping beam 4, girder 1 is formed by the concatenation of many girder modules 10 head and the tail, and girder module 10 adopts 5 anchors in the side slope at the position that its concatenation is connected, the position of splicing connection is connected in two girder modules 10 at the both ends of secondary beam 2, girder module 10, secondary beam 2 are prefabricated formula reinforced concrete beam.

Preferably, the secondary beam 2 is a reinforced concrete beam shaped like a Chinese character 'ren', the middle position of the secondary beam 2 is high, the positions of the two ends of the secondary beam are low, and the two ends of the secondary beam 2 are respectively connected to the splicing connection positions of the main beam modules 10 on the two adjacent groups of main beams 1.

Preferably, girder module 10 upper and lower both ends are provided with girder upper portion connecting block 11 and girder lower part connecting block 12 respectively, girder upper portion connecting block 11 forms girder upper portion connection concave 13 in girder module 10 upper end, girder lower part connecting block 12 forms girder lower part connection concave 14 at girder module 10 lower extreme, in two girder modules 10 of splicing each other, girder upper portion connecting block 11 on the girder module 10 that is located the lower part corresponds to block in the girder lower part connection concave 14 on the girder module 10 that is located the upper part, and girder lower part connecting block 12 on the girder module 10 that is located the upper part corresponds to block in the girder upper portion connection concave 13 of girder module 10 that is located the lower part.

Preferably, a main beam connecting part 15 is arranged on the main beam upper connecting block 11, a main beam connecting hole adapted to the main beam connecting part 15 is arranged on the main beam lower connecting block 12, and the main beam connecting part 15 is connected with the main beam connecting hole in a matching manner and connects two adjacent main beam modules 10 in a splicing manner.

Preferably, secondary beam connecting pieces 21 are arranged at two ends of each secondary beam 2, a secondary beam connecting jack matched with the secondary beam connecting piece 21 is formed in each main beam module 10, and the secondary beam connecting pieces 21 are correspondingly inserted into the secondary beam connecting jacks to fixedly connect the main beam modules 10 and the secondary beams 2.

Preferably, two sides of the outer wall surface of the main beam module 10 are provided with main beam water guiding groove baffles 16, two main beam water guiding groove baffles 16 form a main beam water guiding groove 17 on the outer wall surface of the main beam module 10, and the main beam water guiding grooves 17 on the main beam modules 10 of the same group of main beams 1 are communicated with each other; the lower edge of the outer wall surface of the secondary beam 2 is provided with a secondary beam water chute baffle 22, the secondary beam water chute baffle 22 is provided with a secondary beam water chute 23 on the outer wall surface of the secondary beam 2, and the secondary beam water chute 23 is communicated with the main beam water chutes 17 on the main beam modules 10 connected to the two ends of the secondary beam 2.

Preferably, the bottom beam 3 is provided with a bottom beam water chute 31, the capping beam 4 is provided with a top beam intercepting ditch 41, the bottom beam 3 is fixedly connected with the lower end of the main beam module 10 positioned at the lowest part in the main beam 1, the bottom beam water chute 31 is communicated with the main beam water chute 17, and the capping beam 4 is fixedly connected with the upper end of the main beam module 10 positioned at the highest part in the main beam 1.

Preferably, the girder module 10 is provided with girder anchoring holes 18 at both ends thereof, the inner end of the anchor rod 5 is anchored on the slope, and the outer end of the anchor rod 5 passes through the girder anchoring holes 18 of the girder module 10 and is locked by an anchor rod backing plate 51 and an anchor rod locking nut 52.

Preferably, the diameter of the anchor rod 5 is 25-32mm, and the stress range of the anchor rod 5 times after the anchor rod locking nut 52 is locked is 120 and 200 kN.

Preferably, a grouting covering layer is arranged at the splicing connection part of the two main beam modules 10 and the secondary beam 2 of the main beam 1, the grouting covering layer is used for covering the main beam modules 10 and the secondary beam 2 at the splicing connection time, the anchor rod 5 is completely covered by the grouting covering layer or the outer end of the anchor rod 5 is partially exposed out of the grouting covering layer, and the part of the anchor rod 5 exposed out of the grouting covering layer is used as a monitoring point of the whole lattice beam.

Specifically, when the technical scheme is implemented, the construction process of the lattice beam is as follows:

1. the prefabricated part of the lattice beam is manufactured, and standard parts are prefabricated in a factory, wherein the prefabricated standard parts comprise a main beam module 10, a secondary beam 2, a bottom beam 3 and a capping beam 4, each part of the lattice beam is produced in a prefabricated standard part mode, and the subsequent installation and installation work of the lattice beam can be greatly facilitated. When the components are prefabricated, hoisting hooks are required to be arranged on the main beam module 10, the secondary beam 2, the bottom beam 3 and the capping beam 4, the hooks are made of phi 12 steel bars and are arranged on the side faces, on one hand, the hooks are used for hoisting the prefabricated components, after the lattice beams are installed, the hooks can be used as hooks for net hanging, spraying, mixing, planting and net hanging, and each side of each prefabricated component structure is not less than 2 hooks; the length of the standard part of the main beam module 1 is preferably 2.5 m; the secondary beams 2 are both standard-sized members with a horizontal spacing of 1.6m and 2.1 m.

2. The side slope is trimmed on site, the slope surface is kept to be smooth as far as possible (the traditional cast-in-place lattice beam needs grooving, and the technical scheme adopts the structure that prefabricated parts are spliced to form the lattice beam, so the grooving is not needed, and the slope surface is ensured to be smooth), and then the planting soil is adopted for earthing up in the frame.

3. Construction stock 5, calculate the vertical difference in height of stock 5 according to prefabricated component length and slope ratio, the horizontal spacing goes on according to conventional 2m, 5 pore-forming diameters of stock 130mm, 5 body of rod diameters 25-32mm of stock, 5 atress 120 of stock give first place to each other 200kN, during the construction, 5 location allowable deviation 50mm of stock.

4. Grouting the anchor rod 5 by adopting 1:0.5 pure cement slurry, grouting at the bottom of a hole in a grouting mode, and enabling the thickness of the protective layer of the anchor rod 5 to be not less than 25 mm.

5. Transportation of lattice beam prefab, job site need provide a place of stacking the prefab, and the place needs be equipped with the long armed crane, assembles lattice beam at the scene.

6. Assembling lattice beams on site, paying attention to the sequence in the assembling process, installing from bottom to top, installing the bottom beam 3 firstly, then installing the main beam 1, when installing the main beam module 10 of the main beam 1, inserting the secondary beam connecting piece 21 into the corresponding secondary beam connecting jack on the main beam module 10 by the secondary beam 2 matched with the main beam, further correspondingly assembling the main beam module 10 on the upper part, then inserting the main beam connecting piece 15 into the main beam connecting hole, and further locking the whole beam by screws. During this assembly process, the anchor rods 5 need to be inserted into the corresponding girder anchorage holes 18 on the girder modules 10.

7. The anchor rod 5 anchor head is fixed, and after the node installation of lattice beam is accomplished and tentatively locks, carries out the locking of stock 5, puts into stock backing plate 51 earlier, then adopts stock lock nut 52 to lock, and stock lock nut 52 adopts two nut locking modes to lock, can be according to the design condition whether need increase prestressing force adjustment locking.

8. The method comprises the steps of grouting and sealing the splicing and connecting parts (mainly referring to the connecting positions of the main beam 1 and the secondary beam 2), forming a grouting covering layer at the splicing and connecting parts after grouting and sealing, wherein the grouting covering layer is used for sealing the connecting parts and connecting pieces (such as a screw, a nut, a gasket and the like) used by the connecting parts, and avoiding oxidation. And the bolt position is sealed in a form of plastering cement mortar.

9. The anchor head part of the anchor rod 5 can be exposed to the outside as a monitoring point for the part where the monitoring point is needed to be arranged.

10. And repeating the steps of 6-8 until the whole slope surface is completely installed, finally installing the top capping beam 4, wherein the capping beam 4 comprises a top beam intercepting ditch 41 to form a complete drainage system, and finally sealing the gap at the interface position of the top beam intercepting ditch 41.

11. And hanging a three-dimensional net in the frame of the lattice beam, and performing spray-mixed plant growth greening treatment to form a greening area 6 in the frame.

12. And carrying out safety inspection regularly, checking the positions of the nodes, and checking the sealing condition and the drainage condition.

Compared with the traditional lattice beam construction structure and the construction scheme, the technical scheme has the following advantages:

1. the cast-in-place structure aqueduct formwork of tradition is difficult, and reinforcement, concrete placement's quality is not controlled well, and the aqueduct is mostly the later stage to add to establish, drops easily, and the quality is relatively poor. The prefabricated structure can be used for improving the integrity and the quality of the lattice beam, the assembling speed is high, the working hours are saved, and the construction efficiency is improved.

2. The slope support is mainly used for treating water, and the stability of a subsequent slope is guaranteed if drainage is performed, in the technical scheme, the secondary beam water guide grooves 23 are formed in the secondary beams 2 in the shape of a Chinese character 'ren', the main beam water guide grooves 17 are formed in the main beams 1, and the main beam water guide grooves 17 are matched with the secondary beam water guide grooves 23, so that the lattice beams can play a good drainage effect on the slope surface, the downward seepage of rainwater on the slope surface can be effectively prevented, the slope engineering quality is further improved, and the service life of the slope engineering is prolonged.

3. The lifting hook that prefabricated component add can regard as follow-up afforestation to hang the couple of net, and the construction is convenient, helps reducing work load.

4. The connecting node utilizes the locking force of the anchor rod 5, the anti-shearing problem of the node position is effectively solved, and meanwhile, the integrity of the whole lattice beam system is good.

5. Can prevent through follow-up slip casting that the joint position from receiving the corruption, the durability is better.

6. Compared with the traditional cast-in-place structure, the on-site assembly has the advantages of high speed, few constructors, cleanness and tidiness on site, particular application to dangerous side slopes such as emergency rescue and the like, and wide application range.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims

1. The utility model provides a prefabricated assembled lattice girder that can splice which characterized in that: including multiunit girder (1) and connect secondary beam (2) between two adjacent girders (1), girder (1) bottom is provided with floorbar (3), and girder (1) top is provided with capping beam (4), girder (1) is formed by the concatenation of many girder modules (10) head and the tail, and anchor rod (5) anchor in the side slope is adopted at the position that its concatenation is connected in girder module (10), the position of connecting in two girder modules (10) concatenation is connected at the both ends of secondary beam (2), girder module (10), secondary beam (2) are prefabricated formula reinforced concrete beam.

2. A prefabricated spliceable fabricated lattice beam as in claim 1, wherein: the secondary beam (2) is a reinforced concrete beam in a herringbone shape, the middle position of the secondary beam (2) is high, the positions of the two ends of the secondary beam are low, and the two ends of the secondary beam (2) are respectively connected to the splicing connection positions of the main beam modules (10) on the two adjacent groups of main beams (1).

3. A prefabricated spliceable fabricated lattice beam as in claim 1, wherein: girder module (10) upper and lower both ends are provided with girder upper portion connecting block (11) and girder sub-unit connection piece (12) respectively, girder upper portion connecting block (11) forms girder upper portion connection concave position (13) in girder module (10) upper end, girder sub-unit connection piece (12) forms girder sub-unit connection concave position (14) at girder module (10) lower extreme, in two girder modules (10) of concatenation each other, girder upper portion connecting block (11) on girder module (10) that are located the lower part correspond to block and go into in girder sub-unit connection concave position (14) on girder module (10) that are located the upper part, and girder sub-unit connection piece (12) on girder module (10) that are located the upper part correspond to block and are connected in girder upper portion connection concave position (13) of girder module (10) that are located the lower part.

4. A prefabricated spliceable fabricated lattice beam as in claim 3, wherein: be provided with girder connecting piece (15) on girder upper portion connecting block (11), be provided with the adaptation on girder lower part connecting block (12) the girder connecting hole of girder connecting piece (15), girder connecting piece (15) are connected and are connected two adjacent girder modules (10) concatenation with the cooperation of girder connecting hole.

5. A prefabricated spliceable fabricated lattice beam as in claim 1, wherein: secondary beam connecting pieces (21) are arranged at two ends of each secondary beam (2), secondary beam connecting jacks of the secondary beam connecting pieces (21) are formed in the main beam modules (10) in an adaptive mode, and the secondary beam connecting pieces (21) are correspondingly inserted into the secondary beam connecting jacks to enable the main beam modules (10) to be fixedly connected with the secondary beams (2).

6. A prefabricated spliceable fabricated lattice beam as in claim 1, wherein: the two sides of the outer wall surface of the main beam module (10) are provided with main beam water chute baffles (16), the two main beam water chute baffles (16) form main beam water chutes (17) on the outer wall surface of the main beam module (10), and the main beam water chutes (17) on the main beam modules (10) of the same group of main beams (1) are mutually communicated; the secondary beam water guide groove baffle plate is characterized in that a secondary beam water guide groove baffle plate (22) is arranged on the lower edge of the outer wall surface of the secondary beam (2), a secondary beam water guide groove (23) is formed in the secondary beam water guide groove baffle plate (22) on the outer wall surface of the secondary beam (2), and the secondary beam water guide groove (23) is communicated with main beam water guide grooves (17) connected to main beam modules (10) at two ends of the secondary beam (2).

7. A prefabricated spliceable fabricated lattice beam as in claim 6, wherein: the utility model discloses a water-retaining roof beam, including floorbar, compression bar, roof beam, mudsill water chute (31), roof beam intercepting ditch (41) have on floorbar (3), and the lower extreme fixed connection that lies in girder module (10) of lower part in floorbar (3) and girder (1), floorbar water chute (31) and girder water chute (17) communicate each other, lie in the upper end fixed connection of girder module (10) of upper portion in compression bar (4) and girder (1).

8. A prefabricated spliceable fabricated lattice beam as in claim 1, wherein: girder module (10) both ends all are provided with girder anchor hole (18), anchor rod (5) inner anchor on the slope, and the girder anchor hole (18) of girder module (10) are passed to the outer end of anchor rod (5) and adopt stock backing plate (51) and stock lock nut (52) locking.

9. A prefabricated spliceable fabricated lattice beam as in claim 8, wherein: the diameter of the anchor rod (5) is 25-32mm, and the stress range of the anchor rod (5) is 120-200kN after the anchor rod is locked by the anchor rod locking nut (52).

10. A prefabricated spliceable fabricated lattice beam as in claim 8, wherein: the main beam (1) is provided with a grouting covering layer at the splicing connection part of the two main beam modules (10) and the secondary beam (2), the grouting covering layer is used for covering the main beam modules (10) and the exposed interfaces and connecting pieces of the secondary beam (2) during splicing connection, the anchor rod (5) is completely covered by the grouting covering layer or the outer end of the anchor rod (5) is partially exposed out of the grouting covering layer, and the exposed part of the anchor rod (5) from the grouting covering layer is used as a monitoring point of the whole lattice beam.