CN111335334A - Prefabricated anchor frame lattice beam expansibility side slope support system of assembling - Google Patents
Prefabricated anchor frame lattice beam expansibility side slope support system of assembling Download PDFInfo
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- CN111335334A CN111335334A CN202010089492.1A CN202010089492A CN111335334A CN 111335334 A CN111335334 A CN 111335334A CN 202010089492 A CN202010089492 A CN 202010089492A CN 111335334 A CN111335334 A CN 111335334A
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- 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
- E02D17/20—Securing of slopes or inclines
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- 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
- E02D17/20—Securing of slopes or inclines
- E02D17/205—Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
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- 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
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Abstract
The invention discloses a prefabricated assembled anchor rod lattice beam expansive slope support system which mainly comprises a prefabricated assembled lattice beam, an anchor rod and a concrete pier. The invention adopts the precast beam structure body, and the splicing of the precast spliced lattice beam is completed by connecting the bulges and the grooves on the three precast beam structure bodies in pairs. The anchor rod is placed into the side slope through the design drilling hole, then extends out through the anchor rod preformed hole, and is fixedly connected with the prefabricated assembled sash beam in an anchor sealing mode through the concrete pier, so that a complete prefabricated assembled anchor rod sash beam is formed. The invention adopts the prefabrication technology to reduce the use of large-scale on-site mechanical equipment, improves the labor productivity and the construction efficiency, reduces the influence on the surrounding social environment and the ecological environment, saves modules, reduces the manufacturing cost, is economic and efficient, improves the construction simplicity, increases the stability of the side slope while effectively discharging rainwater and preventing the rainwater from infiltrating into the side slope, and achieves the purposes of economy and environmental protection.
Description
Technical Field
The invention relates to a prefabricated assembled anchor rod frame lattice beam expansive slope support system, and belongs to the field of geotechnical engineering and geological engineering.
Background
The slope problem is often encountered in engineering construction, how to keep the slope stable becomes a crucial difficulty, and the difficulty influences the progress of the engineering construction and the safety of people's lives and properties. The side slopes are of various types, wherein the expansive side slope geological disasters have the characteristics of high probability and high harmfulness. Expansive slope means that the soil body of the slope contains a large amount of clay minerals, such as montmorillonite, illite and kaolinite. The water-soluble polymer material has poor stability when meeting water, and is easy to cause engineering problems of expansion, disintegration, softening and the like, thereby causing the instability of the side slope. At present, the slope protection generally adopts the construction of anchor rod lattice beams on the slope, the method can improve the stability of the slope, vegetation can be planted in the lattice beams, water and soil loss is prevented, and a certain ecological effect is achieved. However, the traditional anchor rod sash beam is troublesome to construct, the slope needs to be excavated and grooved on site, steel bar construction is carried out in the groove, concrete is poured, and then maintenance is carried out, so that the anchor rod sash beam support system has the characteristics of long construction period and high cost, and the traditional anchor rod sash beam support system cannot carry out efficient drainage, so that some rock-soil bodies with higher expansibility have potential hazard.
Therefore, there is a need for an expandable slope support system with anchor frame beams, which is simple and rapid in construction and has high-efficiency drainage capability.
Disclosure of Invention
The invention aims to overcome the defects and provides the prefabricated assembled anchor rod frame lattice beam expansive side slope supporting system which realizes the modularization of the structure, the industrialization of parts and the simple and rapid construction, has the advantages of high efficiency, environmental protection and energy conservation, saves increasingly tense labor resources and overcomes the limitation of the traditional method.
The invention aims to realize the purpose, and provides a prefabricated assembled anchor rod lattice beam expansive slope support system which comprises anchor rods, a low-permeability cushion layer uniformly paved on the slope surface of a slope, a prefabricated assembled lattice beam fixed on the low-permeability cushion layer and filling soil, wherein the filling soil is uniformly filled in lattices of the prefabricated assembled lattice beam;
the prefabricated assembled lattice beam is formed by assembling a bottom prefabricated assembled lattice beam and N single-layer main prefabricated assembled lattice beams with the same structure, wherein N is a natural number and is not less than 1; the bottom prefabricated assembled sash beam is formed by assembling n bottom longitudinal prefabricated beam structural bodies and 2n-2 transverse prefabricated beam structural bodies, wherein n is a natural number and is more than 1; the single-layer main body prefabricated assembled sash beam is formed by assembling n longitudinal prefabricated beam structural bodies and n-1 transverse prefabricated beam structural bodies; the cross sections of the bottom end longitudinal precast beam structure body, the transverse precast beam structure body and the longitudinal precast beam structure body are all rectangular, and the cross sections of the bottom end longitudinal precast beam structure body and the longitudinal precast beam structure body are the same in size;
the end surfaces of two ends of the transverse precast beam structure body are respectively provided with a bulge which is marked as a transverse connecting bulge, and the transverse precast beam structure body is provided with a plurality of water permeable holes;
a protrusion is arranged on the end face of the top of the bottom end longitudinal precast beam structure body and is marked as a longitudinal connecting protrusion; anchor rod preformed holes are respectively reserved in the center positions of the top and the tail of the bottom end longitudinal precast beam structure body, which are L1 away from the top end face and the tail end face of the bottom end longitudinal precast beam structure body, two symmetrical side faces on two sides of each anchor rod preformed hole are provided with two grooves corresponding to the transverse connecting bulges and marked as transverse connecting grooves, and L1 is 0.05-0.1 m;
a groove corresponding to the longitudinal connecting bulge is formed in the end face of the tail of the longitudinal precast beam structure body and is marked as a longitudinal connecting groove; the structure of the top of the longitudinal precast beam structure body is the same as that of the top of the bottom longitudinal precast beam structure body, namely, a longitudinal connecting bulge is arranged on the top end surface of the longitudinal precast beam structure body, an anchor rod preformed hole is reserved in the center of the top of the longitudinal precast beam structure body, which is L1 away from the top end surface of the longitudinal precast beam structure body, and two transverse connecting grooves corresponding to the transverse connecting bulges are formed in two symmetrical side surfaces on two sides of the anchor rod preformed hole;
the n-1 transverse precast beam structures are butted with the transverse connecting grooves at the tail parts of the n bottom end longitudinal precast beam structures through the transverse connecting bulges at the two ends to form the bottom of the bottom end prefabricated assembled frame beam, and the n-1 transverse precast beam structures are butted with the transverse connecting grooves at the top parts of the n bottom end longitudinal precast beam structures through the transverse connecting bulges at the two ends to form the top of the bottom end prefabricated assembled frame beam, namely the bottom end prefabricated assembled frame beam is assembled into a closed bottom end prefabricated assembled frame beam comprising n-1 lattices;
the N single-layer main body prefabricated assembly frame girders are assembled into a multi-layer main body prefabricated assembly frame girder comprising N × (N-1) lattices by matching the longitudinal connecting bulge at the top of one single-layer main body prefabricated assembly frame girder with the longitudinal connecting groove at the tail of the other single-layer main body prefabricated assembly frame girder;
the longitudinal connecting grooves at the tail parts of the n longitudinal precast beam structural bodies at the bottommost layer of the multi-layer main body prefabricated assembled lattice beam are butted with the longitudinal connecting bulges at the top part of the bottom longitudinal precast beam structural body, and the prefabricated assembled lattice beam is assembled into a complete prefabricated assembled lattice beam;
one end of the anchor rod is fixedly connected in the side slope, the other end of the anchor rod penetrates through the low-permeability cushion layer and extends out of the anchor rod preformed hole in the prefabricated assembled sash beam, and the anchor rod and the prefabricated assembled sash beam are fixedly connected in an anchor sealing mode through a concrete pier formed by pouring.
Preferably, the bottom longitudinal precast beam structure, the transverse precast beam structure and the longitudinal precast beam structure are all precast reinforced concrete structures, that is, a steel reinforcement framework structure is arranged inside the three precast beam structures.
Preferably, the transverse connecting protrusions and the longitudinal connecting protrusions are both trapezoidal bodies, the upper bottoms of the trapezoidal bodies are connected with the precast beam structure bodies where the corresponding connecting protrusions are located into a whole, and the lower bottoms of the trapezoidal bodies extend outwards to form the end faces of the precast beam structure bodies where the corresponding connecting protrusions are located.
Preferably, the number of the water permeable holes on each transverse precast beam structure is 20-40, the water permeable holes are uniformly distributed along the length direction of the transverse precast beam structure and are used for communicating the lattices on the two sides of the transverse precast beam structure, and asphalt mixtures are filled in the water permeable holes.
Preferably, the anchor rod is a pressure grouting anchor rod with the diameter of 24-32 mm.
Preferably, the concrete pier is made of C30 concrete, and the poured concrete pier is in a trapezoid shape.
Preferably, the low-permeability cushion layer is made of weak-expansibility clay, and is compacted and compacted after being uniformly paved, wherein the compacted and compacted thickness is 0.1-0.3 m.
Preferably, the filling soil is loam, the loam is uniformly filled in the lattices of the prefabricated assembled lattice beams, and the vegetation is planted on the filling soil.
Compared with the prior art, the invention has the beneficial effects that:
1. the prefabricated assembled lattice beam is adopted, and the prefabricated beam structure body is prefabricated in a factory, so that the use of large-scale on-site mechanical equipment is reduced, the labor productivity and the construction efficiency are improved, the construction progress is accelerated, and the influence on the surrounding social environment and the ecological environment is reduced.
2. The three prefabricated beam structures adopted in the invention save modules, reduce the manufacturing cost, and are economical and efficient.
3. The transverse precast beam structure produced by the invention is provided with the water permeable holes, and the water permeable holes are filled with the water permeable asphalt mixture, so that rainwater accumulated in the sash can be effectively discharged, and the effect of preventing impurities from blocking the water permeable holes is achieved.
4. The anchor rod preformed holes are formed in the longitudinal precast beam and the bottom end longitudinal precast beam structure body, so that the construction simplicity is improved, and the structural stability is improved.
5. The concrete pier arranged in the invention effectively increases the stability of the structure while performing anchor sealing.
6. The filling soil adopted in the invention is loam, has the characteristic of good permeability, can enable rainwater to quickly reach the permeable hole under the action of gravity, is convenient for the rainwater to quickly permeate into the next sash, has good fertility and is beneficial to plant growth.
7. The low-permeability cushion layer adopted in the invention is weak-expansibility clay, has the characteristic of low permeability, the permeability is further reduced after compaction, and the purposes of economy and environmental protection are achieved while rainwater is effectively prevented from infiltrating into the side slope.
Drawings
Fig. 1 is a three-dimensional view of the prefabricated assembled anchor rod lattice beam expansive slope support system.
Fig. 2 is a schematic structural view of the prefabricated assembled lattice beam in the invention.
Fig. 3 is a three-dimensional view of a transverse precast beam structure according to the present invention.
Fig. 4 is a plan view of a longitudinal precast beam structure according to the present invention.
Fig. 5 is a plan view of the bottom-end longitudinal precast beam structure of the present invention.
Fig. 6 is a schematic structural view of a single-layer main body prefabricated assembled lattice beam in the invention.
Fig. 7 is a schematic structural view of the prefabricated assembled lattice beam at the bottom end in the invention.
Fig. 8 is a schematic view showing the connection of the longitudinal coupling projection and the longitudinal coupling groove in the present invention.
Fig. 9 is an enlarged three-dimensional view of the anchor rod fixation of the present invention.
Wherein, 1, anchor rod; 2. a hypotonic cushion layer; 3. prefabricating and assembling the lattice beam; 4. side slope; 5. water permeable holes; 6. filling soil; 7. a bottom end longitudinal precast beam structure body; 8. a transverse precast beam structure; 9. longitudinally prefabricating a beam structure; 10. a transverse connecting groove; 11. a transverse connecting projection; 12. vegetation; 13. concrete piers; 14. reserving a hole in the anchor rod; 15. prefabricating a spliced lattice beam on the single-layer main body; 16. the bottom end is prefabricated and assembled with a lattice beam; 17. a longitudinal connecting projection; 18. a longitudinal connecting groove;
Detailed Description
For further explanation of the present invention, the technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings of the present invention.
Fig. 1 is a three-dimensional view of the prefabricated assembled anchor rod lattice beam expansive slope support system. As shown in fig. 1, the support system comprises anchor rods 1, a low-permeability cushion layer 2 uniformly paved on the slope surface of a side slope 4, prefabricated assembled lattice beams 3 fixed on the low-permeability cushion layer 2 and filling soil 6, wherein the filling soil 6 is uniformly filled in the lattices of the prefabricated assembled lattice beams 3.
Fig. 2 is a schematic structural view of the prefabricated assembled lattice beam 3 of the present invention, and as can be seen from fig. 2, the prefabricated assembled lattice beam 3 is assembled by a bottom prefabricated assembled lattice beam 16 and N single-layer main prefabricated assembled lattice beams 15 with the same structure, where N is a natural number and is greater than or equal to 1; the bottom prefabricated assembled frame beam 16 is formed by assembling n bottom longitudinal prefabricated beam structural bodies 7 and 2n-2 transverse prefabricated beam structural bodies 8, wherein n is a natural number and is more than 1; the single-layer main body prefabricated assembled frame beam 15 is formed by assembling n longitudinal precast beam structural bodies 9 and n-1 transverse precast beam structural bodies 8.
Fig. 3, 4 and 5 show the specific structures of the bottom longitudinal precast beam structural body 7, the transverse precast beam structural body 8 and the longitudinal precast beam structural body 9, respectively.
The cross sections of the bottom end longitudinal precast beam structural body 7, the transverse precast beam structural body 8 and the longitudinal precast beam structural body 9 are all rectangular, and the cross sections of the bottom end longitudinal precast beam structural body 7 and the longitudinal precast beam structural body 9 are the same in size. In this embodiment, the bottom longitudinal precast beam structure 7, the transverse precast beam structure 8, and the longitudinal precast beam structure 9 are all prefabricated reinforced concrete structures, that is, there are steel reinforcement framework structures inside the three precast beam structures. Specifically, in the present embodiment, the transverse precast beam structural body 8 has an overall length of 1.04m, and the length for constituting the sash part is 1 m. The total length of the bottom end longitudinal precast beam structural body 7 and the longitudinal precast beam structural body 9 is 1.12m, and the length of the sash part is 1 m. The cross sections of the three structures are all square, and the side length is 0.1 m.
The end surfaces of two ends of the transverse precast beam structure body 8 are respectively provided with a bulge marked as a transverse connecting bulge 11, and the transverse precast beam structure body 8 is provided with a plurality of water permeable holes 5. In this embodiment, the number of the permeable holes 5 on each transverse precast beam structure 8 is 20-40, the permeable holes 5 are uniformly distributed along the length direction of the transverse precast beam structure 8, the permeable holes 5 are used for communicating the lattices on the two sides of the transverse precast beam structure 8, and the permeable holes 5 are filled with asphalt mixture to prevent impurities from blocking the permeable holes. In this embodiment, the diameter of the water permeable holes 5 is 10 mm.
A protrusion is arranged on the end face of the top of the bottom end longitudinal precast beam structure body 7 and is marked as a longitudinal connecting protrusion 17; the top and the tail of the bottom end longitudinal precast beam structure body 7 are respectively provided with anchor rod preformed holes 14 at the central positions which are L1 away from the top end surface and the tail end surface of the bottom end longitudinal precast beam structure body, two symmetrical side surfaces at two sides of each anchor rod preformed hole 14 are provided with two grooves corresponding to the transverse connecting bulges 11 and marked as transverse connecting grooves 10, and L1 is 0.05m-0.1 m. In this example, L1 is 0.05 m.
A groove corresponding to the longitudinal connecting bulge 17 is formed in the end face of the tail of the longitudinal precast beam structure body 9 and is marked as a longitudinal connecting groove 18; the structure of the top of the longitudinal precast beam structure body 9 is the same as that of the top of the bottom longitudinal precast beam structure body 7, namely, a longitudinal connecting protrusion 17 is arranged on the top end surface of the longitudinal precast beam structure body 9, an anchor rod preformed hole 14 is reserved in the center of the top of the longitudinal precast beam structure body 9 and the position L1 away from the top end surface of the longitudinal precast beam structure body, and two transverse connecting grooves 10 corresponding to the transverse connecting protrusions 11 are formed in two symmetrical side surfaces of two sides of the anchor rod preformed hole 14.
In this embodiment, the transverse connecting protrusions 11 and the longitudinal connecting protrusions 17 are both trapezoidal bodies, the upper bottoms of the trapezoidal bodies are connected with the precast beam structure body where the corresponding connecting protrusions are located as a whole, the lower bottoms of the trapezoidal bodies extend outward to form the end surfaces of the precast beam structure body where the corresponding connecting protrusions are located, taking the transverse precast beam structure body 8 as an example, as shown in fig. 3, the transverse connecting protrusions 11 are trapezoidal bodies, the upper bottoms of the transverse connecting protrusions 11 are connected with the transverse precast beam structure body 8 where the transverse connecting protrusions 11 are located as a whole, and the lower bottoms of the trapezoidal bodies extend outward to form the end surfaces of the transverse precast beam structure body 8 where the transverse connecting protrusions 11 are located. Specifically, in the present embodiment, the height of each of the transverse connecting protrusion 11 and the longitudinal connecting protrusion 17 is 0.02m, that is, the depth of each of the transverse connecting groove 10 and the longitudinal connecting groove 18 is 0.02 m. FIG. 9 is a schematic view showing the connection between the longitudinal connecting protrusion and the longitudinal connecting groove in the embodiment of the present invention, and it can be seen from the figure that the trapezoidal protrusion is adopted, and the bottom of the trapezoidal protrusion faces outwards, which is beneficial to improving the stability
Fig. 6 and 7 are schematic structural views of the single-layer main body prefabricated assembled frame beam and the bottom prefabricated assembled frame beam in the invention.
The n-1 transverse precast beam structural bodies 8 are in butt joint with the transverse connecting grooves 10 at the tail parts of the n bottom longitudinal precast beam structural bodies 7 through the transverse connecting bulges 11 at the two ends to form the bottom of a bottom prefabricated assembled frame beam 16, and the n-1 transverse precast beam structural bodies 8 are in butt joint with the transverse connecting grooves 10 at the tops of the n bottom longitudinal precast beam structural bodies 7 through the transverse connecting bulges 11 at the two ends to form the top of the bottom prefabricated assembled frame beam 16, namely, the closed bottom prefabricated assembled frame beam 16 comprising the n-1 lattices is assembled.
The N-1 transverse precast beam structures 8 are butted with the transverse connecting grooves 10 at the tops of the N longitudinal precast beam structures 9 through the transverse connecting bulges 11 at the two ends to be assembled into a semi-closed single-layer main body precast assembled frame beam 15 comprising N-1 lattices, and the N single-layer main body precast assembled frame beams 15 are assembled into a multi-layer main body precast assembled frame beam comprising N × (N-1) lattices through the matching of the longitudinal connecting bulge 17 at the top of one single-layer main body precast assembled frame beam 15 and the longitudinal connecting groove 18 at the tail of the other single-layer main body precast assembled frame beam 15.
The longitudinal connecting grooves 18 at the tail parts of the n longitudinal precast beam structural bodies 9 at the lowest layer of the multi-layer main body prefabricated assembled sash beam are butted with the longitudinal connecting bulges 17 at the top parts of the longitudinal precast beam structural bodies 7 at the bottom ends, and the whole prefabricated assembled sash beam 3 is assembled.
Fig. 8 is an enlarged three-dimensional view of the anchor 1 of the present invention. It can be seen from the figure that one end of the anchor rod 1 is fixedly connected in the side slope 4, the other end passes through the low-permeability cushion layer 2, extends out of the anchor rod preformed hole 14 on the prefabricated assembled lattice beam 3, and the anchor rod 1 and the prefabricated assembled lattice beam 3 are fixedly sealed and anchored through a concrete pier 13 formed by pouring. In this embodiment, the bolt 1 is a pressure grouting bolt with a diameter of 28 mm. In this embodiment, the concrete pier 13 is made of C30 concrete, and the poured concrete has a trapezoidal shape. Specifically, the top surface length of side sets up to 40mm, and the bottom surface length of side sets up to 60mm, and highly set up to cover the stock and expose the section can.
In this embodiment, the low-permeability cushion layer 2 is made of low-expansibility clay, and is compacted and compacted after being uniformly paved, wherein the compacted and compacted thickness is 0.1m-0.3 m. The filling soil 6 is loam, is uniformly filled in the lattices of the prefabricated assembled lattice beams 3, and vegetation 12 is planted on the filling soil 6.
Claims (8)
1. The expandable side slope supporting system for the prefabricated assembled anchor rod lattice beams is characterized by comprising anchor rods (1), a low-permeability cushion layer (2) uniformly paved on the slope surface of a side slope (4), the prefabricated assembled lattice beams (3) fixed on the low-permeability cushion layer (2) and filling soil (6), wherein the filling soil (6) is uniformly filled in lattices of the prefabricated assembled lattice beams (3);
the prefabricated assembled frame beam (3) is formed by assembling a bottom prefabricated assembled frame beam (16) and N single-layer main body prefabricated assembled frame beams (15) with the same structure, wherein N is a natural number and is more than or equal to 1; the bottom prefabricated assembled frame beam (16) is formed by assembling n bottom longitudinal prefabricated beam structural bodies (7) and 2n-2 transverse prefabricated beam structural bodies (8), wherein n is a natural number and is more than 1; the single-layer main body prefabricated assembled frame beam (15) is formed by assembling n longitudinal precast beam structural bodies (9) and n-1 transverse precast beam structural bodies (8); the cross sections of the bottom end longitudinal precast beam structural body (7), the transverse precast beam structural body (8) and the longitudinal precast beam structural body (9) are all rectangular, and the cross sections of the bottom end longitudinal precast beam structural body (7) and the longitudinal precast beam structural body (9) are the same in size;
the end surfaces of two ends of the transverse precast beam structure body (8) are respectively provided with a bulge which is marked as a transverse connecting bulge (11), and the transverse precast beam structure body (8) is provided with a plurality of water permeable holes (5);
a protrusion is arranged on the end face of the top of the bottom end longitudinal precast beam structure body (7) and is marked as a longitudinal connecting protrusion (17); anchor rod preformed holes (14) are respectively reserved at the top and the tail of the bottom end longitudinal precast beam structure body (7) and the central positions which are L1 away from the top end surface and the tail end surface, two symmetrical side surfaces at two sides of each anchor rod preformed hole (14) are provided with two grooves corresponding to the transverse connecting bulges (11) and marked as transverse connecting grooves (10), and L1 is 0.05-0.1 m;
a groove corresponding to the longitudinal connecting bulge (17) is formed in the end face of the tail of the longitudinal precast beam structure body (9) and is marked as a longitudinal connecting groove (18); the structure of the top of the longitudinal precast beam structure body (9) is the same as that of the top of the bottom longitudinal precast beam structure body (7), namely a longitudinal connecting bulge (17) is arranged on the top end surface of the longitudinal precast beam structure body (9), an anchor rod preformed hole (14) is reserved in the center of the top of the longitudinal precast beam structure body (9) and the position, which is L1 away from the top end surface of the longitudinal precast beam structure body, and two transverse connecting grooves (10) corresponding to the transverse connecting bulges (11) are formed in two symmetrical side surfaces on two sides of the anchor rod preformed hole (14);
the n-1 transverse precast beam structural bodies (8) are butted with transverse connecting grooves (10) at the tail parts of the n bottom end longitudinal precast beam structural bodies (7) through transverse connecting bulges (11) at two ends to form the bottom of a bottom end prefabricated assembled frame beam (16), and the n-1 transverse precast beam structural bodies (8) are butted with the transverse connecting grooves (10) at the tops of the n bottom end longitudinal precast beam structural bodies (7) through the transverse connecting bulges (11) at two ends to form the top of the bottom end prefabricated assembled frame beam (16), namely, the closed bottom end prefabricated assembled frame beam (16) comprising the n-1 frames is assembled;
the N-1 transverse precast beam structures (8) are butted with transverse connecting grooves (10) at the tops of the N longitudinal precast beam structures (9) through transverse connecting bulges (11) at two ends and are spliced into a semi-closed single-layer main body precast splicing frame beam (15) comprising N-1 lattices, and the N single-layer main body precast splicing frame beams (15) are spliced into a multi-layer main body precast splicing frame beam comprising N × (N-1) lattices through the matching of the longitudinal connecting bulge (17) at the top of the single-layer main body precast splicing frame beam (15) and the longitudinal connecting groove (18) at the tail of the adjacent single-layer main body precast splicing frame beam (15);
the longitudinal connecting grooves (18) at the tail parts of the n longitudinal precast beam structural bodies (9) at the bottommost layer of the multi-layer main body prefabricated assembled lattice beam are butted with the longitudinal connecting bulges (17) at the top part of the bottom longitudinal precast beam structural body (7) and assembled into a complete prefabricated assembled lattice beam (3);
one end of the anchor rod (1) is fixedly connected in the side slope (4), the other end of the anchor rod penetrates through the low-permeability cushion layer (2), the anchor rod extends out of an anchor rod preformed hole (14) in the prefabricated assembled lattice beam (3), and the anchor rod (1) and the prefabricated assembled lattice beam (3) are fixedly connected in an anchor sealing mode through a concrete pier (13) formed by pouring.
2. The expandable side slope supporting system of the prefabricated assembled anchor rod lattice beam is characterized in that the bottom longitudinal precast beam structural body (7), the transverse precast beam structural body (8) and the longitudinal precast beam structural body (9) are all prefabricated reinforced concrete structural bodies, namely, reinforced bar skeleton structures are arranged inside the three precast beam structural bodies.
3. The expandable side slope supporting system of the prefabricated assembled anchor rod frame beam as claimed in claim 1, wherein the transverse connecting protrusions (11) and the longitudinal connecting protrusions (17) are both in the shape of a trapezoid, the upper bottom of the trapezoid is connected with the prefabricated beam structure body where the corresponding connecting protrusions are located into a whole, and the lower bottom of the trapezoid extends outwards to form the end face of the prefabricated beam structure body where the corresponding connecting protrusions are located.
4. The expandable side slope supporting system of the prefabricated assembled anchor rod lattice beam as claimed in claim 1, wherein the number of the water permeable holes (5) on each transverse precast beam structure body (8) is 20-40, the water permeable holes (5) are uniformly distributed along the length direction of the transverse precast beam structure body (8) and are used for communicating the lattices on the two sides of the transverse precast beam structure body (8), and asphalt mixture is filled in the water permeable holes (5).
5. A prefabricated assembled anchor frame beam expandable side slope support system according to claim 1, characterized in that the anchor rods (1) are pressure grouting anchor rods with a diameter of 24-32 mm.
6. The expandable side slope support system of the prefabricated assembled anchor rod lattice beam as claimed in claim 1, wherein the concrete pier (13) is made of C30 concrete material and is shaped as a trapezoid after pouring.
7. The prefabricated assembled anchor rod frame girder expansive slope supporting system as claimed in claim 1, wherein the low-permeability cushion layer (2) is made of weak expansive clay, and is compacted after being uniformly paved, and the thickness after being compacted is 0.1m-0.3 m.
8. The prefabricated assembled anchor rod lattice beam expansive slope support system according to claim 1, wherein the filling soil (6) is loam, is uniformly filled in the lattices of the prefabricated assembled lattice beam (3), and plants (12) are planted on the filling soil (6).
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| CN202010089492.1A CN111335334A (en) | 2020-02-12 | 2020-02-12 | Prefabricated anchor frame lattice beam expansibility side slope support system of assembling |
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| CN202010089492.1A CN111335334A (en) | 2020-02-12 | 2020-02-12 | Prefabricated anchor frame lattice beam expansibility side slope support system of assembling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267479A (en) * | 2020-10-16 | 2021-01-26 | 苏交科集团股份有限公司 | Frame type expansive soil slope supporting device for rigid splicing anchoring and early warning monitoring method |
| CN114232650A (en) * | 2021-12-02 | 2022-03-25 | 中交一公局第五工程有限公司 | Prefabricated anchor rod frame lattice beam structure and construction process thereof |
| CN115059100A (en) * | 2022-08-16 | 2022-09-16 | 煤炭科学技术研究院有限公司 | Slope reinforcement device and method |
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| CN114232650A (en) * | 2021-12-02 | 2022-03-25 | 中交一公局第五工程有限公司 | Prefabricated anchor rod frame lattice beam structure and construction process thereof |
| CN115059100A (en) * | 2022-08-16 | 2022-09-16 | 煤炭科学技术研究院有限公司 | Slope reinforcement device and method |
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Application publication date: 20200626 |