CN211008542U - Hole plugging structure - Google Patents
Hole plugging structure Download PDFInfo
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- CN211008542U CN211008542U CN201921972158.XU CN201921972158U CN211008542U CN 211008542 U CN211008542 U CN 211008542U CN 201921972158 U CN201921972158 U CN 201921972158U CN 211008542 U CN211008542 U CN 211008542U
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Abstract
The utility model relates to a hole block structure, including prefabricated plate, cast-in-place layer and shaped steel. The precast slabs are arranged above the holes and are used for being arranged at the rabbet of the hole edge beam. The cast-in-place layer is arranged on the precast slab and is used for being connected with the retaining wall, and the profile steel is arranged in the cast-in-place layer. The utility model discloses a hole block structure through set up shaped steel in cast-in-place layer, can improve cast-in-place layer shear strength and bending strength to improve hole block structure's bearing capacity.
Description
Technical Field
The utility model relates to a tunnel engineering technical field especially relates to a hole block structure.
Background
Along with the rapid development of cities, the construction strength of urban rail transit engineering is gradually increased, and the requirement on the subway construction period is higher and higher. In the subway construction process, a large number of temporary holes, such as: shield holes, rail row holes, unearthed holes, temporary holes for post-pouring according to the needs of the site, and the like of each layer plate. The temporary holes are mostly poured by cast-in-place concrete in a blocking mode at the tops of the temporary holes, but after the temporary holes are poured by the cast-in-place concrete, the bearing capacity of a cast-in-place layer is insufficient.
SUMMERY OF THE UTILITY MODEL
Therefore, there is a need to provide a hole blocking structure, which improves the bearing capacity of the hole blocking structure.
A hole blocking structure, comprising:
the prefabricated slab is arranged at the rabbet of the hole boundary beam;
the cast-in-place layer is arranged on the precast slab and is used for being connected with a retaining wall;
the section steel is arranged in the cast-in-place layer.
The hole plugging structure at least has the following advantages:
above-mentioned scheme provides a hole block structure, sets up the prefabricated plate in the top of hole, and the top of prefabricated plate sets up cast-in-place layer, and cast-in-place layer is connected with retaining wall. The structural steel is arranged in the cast-in-situ layer, so that the shear strength and the bending strength of the cast-in-situ layer can be improved, and the bearing capacity of the hole plugging structure is improved.
The technical solution is further explained below:
in one embodiment, the hole blocking structure further comprises a longitudinal rib, one end of the longitudinal rib is arranged in the precast slab, the other end of the longitudinal rib is arranged in the cast-in-situ layer, and the longitudinal rib is connected with the section steel.
In one embodiment, the precast slab includes a rib beam, one end of which is located in the precast slab, and the other end of which is cast in situ in the cast-in-situ layer.
In one embodiment, the rib beam comprises a gluten, a bottom bar, a waist bar and a stirrup, the gluten is positioned at the top of the rib beam, and the gluten is implanted in the retaining wall; the bottom rib is positioned at the bottom of the rib beam, and the waist rib is arranged along the height direction of the rib beam;
still be equipped with first diagonal muscle and second diagonal muscle in the rib roof beam, first diagonal muscle sets up the top of rib roof beam, the second diagonal muscle sets up the bottom of rib roof beam.
In one embodiment, the gap between the end side of the precast slab and the rabbet surface of the hole edge beam is filled with neoprene latex cement mortar.
In one embodiment, the precast slab is provided with a first steel bar, one end of the first steel bar is arranged in the precast slab, and the other end of the first steel bar is cast in situ in the cast-in-situ layer.
In one embodiment, at least two prefabricated plates are arranged, and the prefabricated plates are arranged above the holes in parallel.
In one embodiment, a second reinforcing steel bar is arranged in the cast-in-place layer and is implanted into the retaining wall.
In one embodiment, the hole blocking structure further comprises a waterproof layer, wherein the waterproof layer comprises a first waterproof layer and a second waterproof layer, the first waterproof layer is arranged along the height direction of the retaining wall, and the second waterproof layer is arranged above the cast-in-place layer.
In one embodiment, the hole blocking structure further comprises a root-penetration resistant protective layer disposed over said second water barrier layer.
Drawings
Fig. 1 is a plan view of a hole plugging structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 5 is a schematic structural view of a prefabricated slab and a first steel bar in a hole plugging structure according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a precast slab and a rib beam in an aperture plugging structure according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a prefabricated slab and a hook in a hole plugging structure according to an embodiment of the present invention;
fig. 8 is a schematic structural view illustrating a prefabricated slab suspended on a rib beam in the hole plugging structure according to an embodiment of the present invention;
fig. 9 is a schematic structural view illustrating a prefabricated slab suspended on a masonry wall in the hole plugging structure according to an embodiment of the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 4 at B;
fig. 11 is a partially enlarged schematic view at C in fig. 4.
Description of reference numerals:
10. the prefabricated slab comprises a prefabricated slab, 11, a rib beam, 111, gluten, 112, a waist bar, 113, a bottom bar, 114, a stirrup, 115, a first diagonal bar, 116, a second diagonal bar, 12, a longitudinal bar, 13, a first reinforcing bar, 14, a lifting hook, 15, a connecting bar, 20, a cast-in-place layer, 21, a second reinforcing bar, 30, profile steel, 40, a hole edge beam, 41, a rabbet, 42, neoprene latex cement mortar, 50, a retaining wall, 51, a wall building body, 60, a sealing gasket, 70, a water-swelling water-stop bar, 80, a waterproof layer, 81, a first waterproof layer, 811, a first waterproof board, 812, a first waterproof coiled material, 82, a second waterproof layer, 821, a second waterproof board, 822, a second waterproof coiled material, 83, a mud nail, 84, sealant, 90, plain concrete, 91, a brick protective layer, 92 and a concrete protective layer.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Referring to fig. 1 to 4, an embodiment of a hole plugging structure includes a precast slab 10, a cast-in-place layer 20, and a section steel 30. The prefabricated panels 10 are placed on top of the aperture with the prefabricated panels 10 positioned at the tongue and groove 41 of the aperture-side beam 40. The cast-in-place layer 20 is disposed above the precast slabs 10, and the cast-in-place layer 20 is connected with the retaining wall 50. The section steel 30 is disposed in the cast-in-place layer 20.
The scheme provides a hole plugging structure, wherein a precast slab 10 is arranged above a hole, a cast-in-place layer 20 is arranged above the precast slab 10, and the cast-in-place layer 20 is connected with a retaining wall 50. By arranging the section steel 30 in the cast-in-situ layer 20, the shear strength and the bending strength of the cast-in-situ layer 20 can be improved, so that the bearing capacity of the hole plugging structure is improved.
Referring to fig. 2 and 3, the edge-holed beam 40 is arranged on the side wall, the top of the edge-holed beam 40 is provided with a tongue-and-groove 41, the prefabricated panel 10 is placed at the tongue-and-groove 41, the bottom surface of the end of the prefabricated panel 10 is in contact with the surface of the tongue-and-groove 41, and the side surface of the end of the prefabricated panel 10 is in contact with the side surface of the tongue-and-groove 41. The retaining wall 50 is disposed above the hole boundary beam 40, the retaining wall 50 is disposed adjacent to the inner sidewall of the hole boundary beam 40, and the distance d between the retaining wall 50 and the inner sidewall of the hole boundary beam 40 is 0.5m to 0.8 m. The cast-in-place layer 20 is disposed above the precast slabs 10 with the ends of the cast-in-place layer 20 positioned on the surfaces of the hole side beams 40 and the ends of the cast-in-place layer 20 connected to the retaining wall 50 at the sides.
Further, neoprene latex cement mortar 42 is filled in the gap between the precast slab 10 and the hole-side sill 40 to prevent external water from flowing into the subway station through the gap between the precast slab 10 and the hole-side sill 40. Specifically, the neoprene latex cement mortar 42 is filled in the gap between the end side of the prefabricated panel 10 and the tongue-and-groove 41.
Referring to fig. 2 to 4, two hole boundary beams 40 and two retaining walls 50 are respectively provided, the two hole boundary beams 40 are spaced apart from each other, the two hole boundary beams 40 are respectively located on the same plane, and the retaining wall 50 is disposed above the hole boundary beams 40. The tops of the two hole boundary beams 40 are respectively provided with a tongue-and-groove 41 structure, two ends of the precast slab 10 are respectively positioned at the tongue-and-groove 41 of the hole boundary beam 40, and the precast slab 10 is horizontal. The cast-in-place layer 20 is disposed above the precast slabs 10, and both ends of the cast-in-place layer 20 are connected to the retaining walls 50, respectively.
In this embodiment, the thickness of the cast-in-place layer 20 is 400mm, and the cast-in-place layer with the thickness of 400mm can improve the bearing capacity of the hole blocking structure. Specifically, the thickness of the cast-in-place layer 20 may be set according to actual requirements, such as the bearing capacity of the hole blocking structure, but not limited thereto. In addition, the cast-in-place layer 20 is a single layer bidirectional reinforcing bar.
In one embodiment, there are at least two section steels 30, the section steels 30 are respectively disposed at both ends of the cast-in-place layer 20, and one end of the section steel 30 is located right above the hole edge beam 40. On one hand, the shear strength and the bending strength of the cast-in-situ layer 20 can be improved by arranging the section steel 30 in the cast-in-situ layer 20, so that the bearing capacity of the hole blocking structure is improved; on the other hand, on the basis of ensuring that the hole plugging structure has enough bearing capacity, the weight of the cast-in-place layer 20 can be reduced, and the cost is reduced.
In another embodiment, one section steel 30 is provided, and the size of the section steel 30 corresponds to the size of the cast-in-place layer 20, so that the two ends of the section steel 30 are respectively positioned right above the hole edge beam 40, thereby improving the shear strength and the bending strength of the cast-in-place layer 20, and further improving the bearing capacity of the hole blocking structure.
Referring to fig. 2 and 3, the hole blocking structure further includes a longitudinal rib 12, one end of the longitudinal rib 12 is disposed in the precast slab 10, the other end of the longitudinal rib 12 is disposed in the cast-in-place layer 20, and the longitudinal rib 12 is connected to the section steel 30. The longitudinal bars 12 are arranged in the precast slabs 10 and the cast-in-place layer 20, and the longitudinal bars 12 are connected with the section steel 30, so that the shear strength and the bending strength of the cast-in-place layer 20 can be further improved, and the bearing capacity of the hole blocking structure is improved. Specifically, the longitudinal ribs 12 are spot-welded to the section steel 30, or the longitudinal ribs 12 are tied to the section steel 30.
Specifically, the longitudinal bars 12 are embedded in the precast slab 10, one ends of the longitudinal bars 12 extend out of the precast slab 10, and the section steel 30 is spot-welded or bound on the longitudinal bars 12. After the section steel 30 is fixed on the longitudinal bar 12, concrete is cast in situ on the precast slab 10, and the longitudinal bar 12 and the section steel 30 are cast in situ in the cast-in-situ layer 20, so that the shear strength and the bending strength of the cast-in-situ layer 20 are improved, and the bearing capacity of the hole blocking structure is further improved.
Referring to fig. 3, a packing 60 or a water-swelling sealing rod 70 is disposed between the precast slab 10 and the hole-side beam 40 to prevent external water from flowing into the subway station through a gap between the precast slab 10 and the hole-side beam 40. Specifically, a gasket 60 or a water-swellable water stop 70 is provided at a position between the bottom surface of the end of the prefabricated panel 10 and the surface of the bezel 41. In this embodiment, a gasket 60 is provided between the bottom surface of the end of the prefabricated panel 10 and the surface of the tongue-and-groove 41.
Specifically, the material of the gasket 60 is epdm, and the gasket 60 made of epdm has resistance to polar solutions and chemicals, low water absorption, and good insulation properties.
Referring to fig. 3, a sealing gasket 60 or a water-swelling sealing rod 70 is also disposed between the cast-in-place layer 20 and the hole-side beam 40 to prevent external water from flowing into the subway station through a gap between the cast-in-place layer 20 and the hole-side beam 40. Specifically, a gasket 60 or water-swellable seal 70 is provided at a position between the bottom surface of the end of the cast-in-place layer 20 and the surface of the hole side beam 40. In this embodiment, two water-swelling sealing strips 70 are provided between the cast-in-place layer 20 and the hole-side beam 40.
Referring to fig. 5, in one embodiment, the prefabricated panel 10 is provided with a first reinforcing bar 13, one end of the first reinforcing bar 13 is embedded in the prefabricated panel 10, and the other end of the first reinforcing bar 13 vertically extends out of the prefabricated panel 10. When concrete is cast in situ on the precast slab 10, the first reinforcing bars 13, which protrude outside the precast slab 10, are cast in situ in the cast-in-situ layer 20. Since one end of the first reinforcing bar 13 is positioned in the prefabricated panel 10 and the other end of the first reinforcing bar 13 is positioned in the cast-in-place layer 20, the coupling strength between the prefabricated panel 10 and the cast-in-place layer 20 can be improved.
Further, the precast slab 10 includes a rib 11, one end of the rib 11 is positioned inside the precast slab 10, the other end of the rib 11 is protruded outside the precast slab 10, and the rib 11 protruded outside the precast slab 10 is cast-in-situ in a cast-in-situ layer 20. By arranging the rib beam 11 between the precast slab 10 and the cast-in-place layer 20, the shear strength and the bending strength of the cast-in-place layer 20 can be improved, thereby improving the bearing capacity of the hole blocking structure. In particular, different numbers of ribs 11 can be arranged in the precast slabs 10 and the cast-in-place layer 20 according to actual requirements, such as the bearing capacity of the hole blocking structure. In this embodiment, two ribs 11 are provided, and the two ribs 11 are spaced apart from each other in the prefabricated panel 10.
Referring to fig. 6, the rib 11 includes a gluten 111, a wale 112, a bottom rib 113 and a hoop 114, the hoop 114 is located in the rib 11 as a main frame, the gluten 111 is located at the top of the rib 11, the bottom rib 113 is located at the bottom of the rib 11, the wale 112 is vertically located in the rib 11, and the gluten 111, the wale 112, the bottom rib 113 and the hoop 114 are cast in place by concrete to form the rib 11. Specifically, the gluten 111 is located in the cast-in-place layer 20, and the bottom rib 113 is located in the prefabricated panel 10.
In the present embodiment, there is one stirrup 114; the number of the gluten 111 is four, and the four gluten 111 are respectively arranged in the stirrup 114 and are positioned at the top of the stirrup 114; seven bottom ribs 113 are arranged, and the seven bottom ribs 113 are respectively arranged in the stirrups 114 and positioned at the bottoms of the stirrups 114; the two waist bars 112 are respectively arranged in the stirrup 114, and the waist bars 112 are perpendicular to the stirrup 114.
Referring to fig. 3 and 6, the first tilted rib 115 is disposed at the top of the rib beam 11, the second tilted rib 116 is disposed at the bottom of the rib beam 11, and the first tilted rib 115 and the second tilted rib 116 are disposed in the rib beam 11, so that the shear strength and the bending strength of the cast-in-place layer 20 can be improved, and the stability of the hole blocking structure can be improved. Specifically, the end of the gluten 111 is bent to form the first tilted rib 115, and the end of the bottom rib 113 is bent to form the second tilted rib 116.
Further, one end of the gluten 111 is located in the rib 11, and the other end of the gluten 111 is embedded in the retaining wall 50, so that the connection strength between the gluten 111 and the retaining wall 50 can be improved, and further, the connection strength between the cast-in-place layer 20 and the retaining wall 50 can be improved. In this embodiment, the length of the gluten 111 embedded in the retaining wall 50 is 400mm, and the length of the gluten 111 embedded in the retaining wall 50 can be determined according to actual requirements, such as the connection strength between the cast-in-place layer 20 and the retaining wall 50, but not limited thereto.
Referring to fig. 3 and 4, a second reinforcing steel bar 21 is disposed in the cast-in-place layer 20, one end of the second reinforcing steel bar 21 is disposed in the cast-in-place layer 20, and the other end of the second reinforcing steel bar 21 is embedded in the retaining wall 50. By arranging the second steel bars 21 in the cast-in-place layer 20, on one hand, the bearing capacity of the cast-in-place layer 20 can be improved; on the other hand, the coupling strength between the cast-in-place layer 20 and the retaining wall 50 can be improved. Specifically, the length of the second reinforcing bars 21 embedded in the retaining wall 50 is 400 mm.
Specifically, the second steel bar 21 in the prefabricated slab 10 has a double-layer bidirectional reinforcing bar structure. Since the cast-in-place layer 20 is further disposed on the prefabricated slab 10, the load on the prefabricated slab 10 is large, and thus, a double-layer bidirectional reinforcing steel bar needs to be disposed in the prefabricated slab 10. In addition, the double-layer bidirectional steel bars are arranged in the precast slab 10, so that the phenomenon that the precast slab 10 cracks due to the fact that the precast slab 10 is subjected to large temperature stress can be reduced.
Referring to fig. 7 and 8, the prefabricated panel 10 is further provided with a hook 14, one end of the hook 14 is embedded in the prefabricated panel 10, and the other end of the hook 14 extends out of the prefabricated panel 10. The prefabricated panels 10 are hung on the top of the holes by the hooks 14, and the hooks 14 are not cut off after the prefabricated panels 10 are hung. Specifically, the hook 14 corresponds to the position of the rib 11, and the hook 14 is connected to the rib 11, for example, the hook 14 is tied to the wale 112 of the rib 11, or the hook 14 is welded to the wale 112 of the rib 11, and the hook 14 and the wale 112 are cast in situ in the rib 11 by concrete.
In order to facilitate the hoisting of the prefabricated panels 10, each prefabricated panel 10 is provided with a hook 14. In this embodiment, four hooks 14 are provided on each prefabricated panel 10, two hooks 14 being provided at one end of the prefabricated panel 10 and the other two hooks 14 being provided at the other end of the prefabricated panel 10.
Referring to fig. 9, in order to set the space inside the subway as a plurality of sealed spaces, a masonry wall 51 is disposed in the subway station, a connecting bar 15 is embedded in a precast slab 10, one end of the connecting bar 15 is embedded in the precast slab 10, and the other end of the connecting bar 15 is poured into the masonry wall 51. The coupling strength between the prefabricated panel 10 and the masonry 51 can be improved by providing the coupling ribs 15 between the prefabricated panel 10 and the masonry 51.
Further, at least two prefabricated panels 10 are provided, the prefabricated panels 10 are hoisted above the holes in blocks, and the prefabricated panels 10 are connected into a whole block of plugging panels. Specifically, since a gap is left between the prefabricated panels 10 hung above the hole, and external water easily flows into the subway station through the gap, the gap between two adjacent prefabricated panels 10 is filled with neoprene latex cement mortar. In this embodiment, six prefabricated panels 10 are provided, the six prefabricated panels 10 are hung above the hole, and gaps between two adjacent prefabricated panels 10 are filled with neoprene latex cement mortar.
Referring to fig. 10, the end side of the prefabricated slab 10 has an irregular structure, so that the traveling path of water can be increased, and the time for water to permeate into the subway station can be prolonged. Specifically, the end side of the precast slab 10 is in a zigzag shape, or the end side of the precast slab 10 is in a wave shape, etc., as long as the traveling path of water can be increased.
Referring to fig. 11, the hole blocking structure further includes a waterproof layer 80, and water outside the hole is prevented from flowing into the subway station by the waterproof layer 80. Specifically, the waterproof layer 80 includes a first waterproof layer 81 and a second waterproof layer 82, the first waterproof layer 81 being disposed along the inner sidewall of the retaining wall 50, and the second waterproof layer 82 being disposed above the cast-in-place layer 20. By providing the first waterproof layer 81 and the second waterproof layer 82, the first waterproof layer 81 prevents external water from flowing into the inside of the subway station along the retaining wall 50, and the second waterproof layer 82 prevents water on the ground from permeating into the subway station from the cast-in-place layer 20.
Referring to fig. 11, the first waterproof layer 81 includes a first waterproof sheet 811 and a first waterproof roll 812, the first waterproof sheet 811 is disposed along an inner sidewall of the retaining wall 50, and the first waterproof roll 812 is disposed outside the first waterproof sheet 811. In order to fix the first waterproof sheet 811 and the first waterproof sheet 812 to the retaining wall 50, the first waterproof sheet 811 is fixed to the retaining wall 50 by the mud nails 83, and the first waterproof sheet 812 is fixed to the outside of the first waterproof sheet 811 by the sealant 84. Specifically, the mud nails 83 are used for the long and flat copper closing-in depression bar with the length of 50mm and the thickness of 3mm, and the distance between two adjacent mud nails 83 is 200 mm-300 mm. Further, the first waterproof sheet 811 is provided with 2m in the height direction of the retaining wall 50.
Further, after the first waterproof sheet 811 and the first waterproof sheet 812 are fixed on the retaining wall 50, plain concrete 90 is poured on the first waterproof sheet 811 and the first waterproof sheet 812. And then laying bricks on the plain concrete 90 to form a brick protective layer 91.
In one embodiment, the second waterproof layer 82 includes a second waterproof sheet 821 and a second waterproof roll 822, the second waterproof sheet 821 is disposed over the cast-in-place layer 20, and the second waterproof roll 822 is disposed over the second waterproof sheet 821. In order to fix the second waterproof board 821 and the second waterproof roll 822 on the cast-in-place layer 20, the second waterproof board 821 is fixed on the cast-in-place layer 20 by the clay nail 83, and the second waterproof roll 822 is fixed above the second waterproof board 821 by the sealant 84. Specifically, the second waterproof board 821 is provided with a plurality of mud nails 83, and the distance between two adjacent mud nails 83 is 200 mm-300 mm.
Further, after the second waterproof board 821 and the second waterproof roll 822 are fixed on the cast-in-situ layer 20, the plain concrete 90 is poured on the second waterproof board 821 and the second waterproof roll 822, so as to form the plain concrete protective layer 92. Specifically, the plain concrete protective layer 92 is a 70mm thick C20 fine stone concrete protective layer.
The first waterproof board 811 and the second waterproof board 821 are both PVC waterproof boards, the thickness of the first waterproof board 811 and the thickness of the second waterproof board 821 are both 1.5mm, and the first waterproof roll 812 and the second waterproof roll 822 are both self-adhesive modified asphalt waterproof rolls.
In one embodiment, the hole blocking structure further comprises a root-penetration resistant protective layer disposed over second waterproof layer 82. By arranging the root penetration resistant protective layer on the second waterproof layer 82, the tree root can be prevented from extending downwards into the second waterproof layer 82, and the waterproof effect of the second waterproof layer 82 is ensured. Specifically, the root penetration resistant protective layer is arranged above the plain concrete protective layer 92, plain soil is arranged above the root penetration resistant protective layer, and the plain soil is subjected to layered backfill and tamping.
The construction method of the hole blocking structure comprises the following steps:
1) determining the structures of the hole edge beam 40 and the retaining wall 50 and the sizes of the holes;
2) according to the bearing capacity requirement of the hole structure, the prefabricated slab 10 with the double layers of bidirectional reinforcing bars is manufactured, and the impermeability grade of the prefabricated slab 10 reaches P8;
3) the base surface treatment, cleaning and roughening are carried out on the groove 41 of the hole boundary beam 40, and a sealing gasket 60 or a water-swelling water stop strip 70 is arranged at the groove 41;
4) hoisting the prefabricated slab 10 in blocks, wherein the end part of the prefabricated slab 10 is positioned at the rabbet 41 of the hole boundary beam 40, and the bottom surface of the prefabricated slab 10 is pressed on the sealing gasket 60 or the water-swelling water stop strip 70;
5) the gap between two adjacent prefabricated plates 10 is filled with neoprene latex cement mortar;
6) performing base surface treatment, cleaning and roughening on the surface of the hole edge beam 40, and arranging a sealing gasket 60 or a water-swelling water stop strip 70 on the surface of the hole edge beam 40;
7) placing second steel bars 21 on the precast slabs 10, and binding/welding the second steel bars 21 and the wales 112/stirrups 114 of the rib beams together; concrete is cast on the precast slab 10 in situ to form a cast-in-situ layer 20;
8) arranging a first waterproof layer 81 along the retaining wall 50, and arranging a second waterproof layer 82 on the cast-in-place layer 20;
9) plain concrete 90 is arranged on the first waterproof layer 81, and a brick protective layer 91 is arranged outside the plain concrete 90; a fine stone concrete protective layer is paved on the second waterproof layer 82;
10) a root puncture resistant protective layer is arranged on the fine stone concrete protective layer;
11) covering the root-resistant protective layer with soil.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A hole block structure, comprising:
the prefabricated slab is arranged at the rabbet of the hole boundary beam;
the cast-in-place layer is arranged on the precast slab and is used for being connected with a retaining wall;
the section steel is arranged in the cast-in-place layer.
2. A hole blocking structure according to claim 1, further comprising a longitudinal bar, wherein one end of the longitudinal bar is disposed in the precast slab, the other end of the longitudinal bar is disposed in the cast-in-place layer, and the longitudinal bar is connected to the section steel.
3. An aperture blocking structure according to claim 1 or claim 2, wherein the precast slab includes a rib beam, one end of the rib beam being located within the precast slab, the other end of the rib beam being cast in situ within the cast in situ layer.
4. The hole plugging structure of claim 3, wherein said rib comprises a gluten, a bottom bar, a waist bar and a stirrup, said gluten being located at the top of said rib and said gluten being embedded in said retaining wall; the bottom rib is positioned at the bottom of the rib beam, and the waist rib is arranged along the height direction of the rib beam;
still be equipped with first diagonal muscle and second diagonal muscle in the rib roof beam, first diagonal muscle sets up the top of rib roof beam, the second diagonal muscle sets up the bottom of rib roof beam.
5. The hole blocking structure according to claim 1 or 2, wherein a gap between the end side of the prefabricated slab and the tongue-and-groove surface of the hole-edge beam is filled with neoprene latex cement mortar.
6. The hole plugging structure according to claim 1 or 2, wherein said prefabricated slab is provided with a first reinforcing bar, one end of said first reinforcing bar is arranged in said prefabricated slab, and the other end of said first reinforcing bar is cast in situ in said cast-in-situ layer.
7. An aperture plugging structure according to claim 1 or 2, wherein said prefabricated panels are provided in at least two numbers, said prefabricated panels being juxtaposed above said aperture.
8. The hole plugging structure according to claim 1 or 2, wherein a second reinforcement is provided in said cast-in-place layer, said second reinforcement being embedded in said retaining wall.
9. The hole plugging structure according to claim 1 or 2, further comprising a waterproof layer, wherein the waterproof layer comprises a first waterproof layer and a second waterproof layer, the first waterproof layer is disposed along the height direction of the retaining wall, and the second waterproof layer is disposed above the cast-in-place layer.
10. The hole-blocking structure of claim 9 further comprising a root-penetration resistant protective layer disposed over said second water-proof layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921972158.XU CN211008542U (en) | 2019-11-15 | 2019-11-15 | Hole plugging structure |
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| CN201921972158.XU CN211008542U (en) | 2019-11-15 | 2019-11-15 | Hole plugging structure |
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| CN211008542U true CN211008542U (en) | 2020-07-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914373A (en) * | 2021-11-24 | 2022-01-11 | 中建丝路建设投资有限公司 | Post-cast strip construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914373A (en) * | 2021-11-24 | 2022-01-11 | 中建丝路建设投资有限公司 | Post-cast strip construction method |
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