CN211314228U - A assembled lining cutting structure for highway tunnel - Google Patents
A assembled lining cutting structure for highway tunnel Download PDFInfo
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- CN211314228U CN211314228U CN201921053975.5U CN201921053975U CN211314228U CN 211314228 U CN211314228 U CN 211314228U CN 201921053975 U CN201921053975 U CN 201921053975U CN 211314228 U CN211314228 U CN 211314228U
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- 239000010959 steel Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 101
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- 238000005422 blasting Methods 0.000 abstract description 13
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Abstract
The utility model relates to the technical field of the prefabrication and assembly of tunnels, and provides an assembled lining structure for a highway tunnel, which comprises odd assembly units and even assembly units which are alternately and circularly arranged along the extending direction of the tunnel; the odd assembly units and the even assembly units respectively comprise inverted arch groups and arch ring groups which are connected end to end, the inverted arch groups are used for being connected with the bottom of the tunnel body, and the arch ring groups are used for being connected with the side wall and the top of the tunnel body; the inverted arch groups of the odd assembly units and the inverted arch groups of the even assembly units are assembled by adopting through seams, and the arch ring groups of the odd assembly units and the arch ring groups of the even assembly units are assembled by adopting staggered seams. The lining structure provided by the utility model can strictly adapt to the characteristics of mountain road tunnels excavated by the drilling and blasting method, and is suitable for the construction of mountain road tunnels; the assembly units can be assembled on the construction site through intensive and standardized production, so that the site construction procedures are reduced, the labor force is saved, the construction efficiency is improved, and the production quality of the assembly units is effectively guaranteed.
Description
Technical Field
The utility model relates to a technical field is assembled in the prefabrication in tunnel, and more specifically says, relates to an assembled lining cutting structure for highway tunnel.
Background
The drilling and blasting method has the characteristics of low requirement on construction site, flexible organization, easy guarantee of construction period and the like, and is a main construction method for railway, highway and subway tunnels. The drilling and blasting method includes drilling, charging, blasting to excavate rock-soil mass, and then performing primary support and secondary lining. At present, most mountain highway tunnels in China are constructed by adopting a drilling and blasting method, primary supports, secondary linings and components thereof of mountain highway tunnels are generally constructed by adopting cast-in-place construction, and the problems of labor intensity exist in the aspects of blasting and drilling, anchor rod driving, steel arch frame making and erecting, concrete spraying, waterproof plate paving and hanging, lining and casting, construction ventilation, slag transportation and the like.
With the continuous development and improvement of the mechanization degree and the shield technical level in China, the shield construction method has gradually become a main method for underground engineering construction because of the advantages of small disturbance to the stratum, small influence to the environment, high mechanization construction speed and the like. However, there are many limitations due to the shield construction and the use of shield segments: the application field is limited, the method is mainly concentrated in urban underground railways and river-crossing and sea-crossing tunnels, and the method is not suitable for large-scale underground space construction such as subway stations, underground parking lots or underground shopping malls; secondly, the shield construction cost is high, and particularly, the construction efficiency in the short-distance interval tunnel is low and the waste is serious; thirdly, shield construction has higher requirements on top plate earthing, and applicable stratum and line position conditions are limited.
Compared with a shield method, the construction process of the drilling and blasting method is mature and can be suitable for various stratums. However, the highway tunnels excavated by the drilling and blasting method cannot be applied with the fabricated lining structure.
The above disadvantages need to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an assembled lining cutting structure for highway tunnel to solve the highway tunnel of present brill method of exploding excavation and can't use assembled lining cutting's technical problem.
In order to achieve the above object, the utility model adopts the following technical scheme: the fabricated lining structure for the highway tunnel comprises odd splicing units and even splicing units which are alternately and circularly distributed along the extending direction of the tunnel;
the odd-numbered assembling units and the even-numbered assembling units respectively comprise an inverted arch group and an arch ring group which are connected end to end, the inverted arch group is used for being connected with the bottom of the tunnel body, and the arch ring group is used for being connected with the side wall and the top of the tunnel body;
the odd number assembling units and the even number assembling units are assembled by adopting straight joints, and the odd number assembling units and the even number assembling units are assembled by adopting staggered joints.
In one embodiment, the inverted arch group comprises a first inverted arch block and two second inverted arch blocks symmetrically arranged at two sides of the first inverted arch block, and the first inverted arch block and the second inverted arch block are used for being connected with the bottom of the tunnel body;
the arch ring group comprises a top sealing block, two adjacent blocks and at least one transition block, wherein the top sealing block is in smooth transition connection with the adjacent blocks, the two adjacent blocks are respectively arranged on two sides of the top sealing block, and the transition block is arranged between the second inverted arch block and the adjacent blocks.
In one embodiment, the number of transition blocks is two;
the two transition blocks are connected with each other and arranged between the second inverted arch block and the adjacent block;
or the two transition blocks are respectively arranged on one side of the two adjacent blocks back to the top sealing block.
In one embodiment, the arc angle of the capping block is 16 ° to 40 °, the arc angle of the adjacent block is 32 ° to 60 °, and the arc angle of the transition block is 20 ° to 60 °.
In one embodiment, the thickness of the capping block, the abutting block and the transition block is 30 cm-80 cm;
and/or the width of the inverted arch group is 11.7-13.3 m.
In one embodiment, the second inverted arch block is provided with an arc surface, the arc surface extends to the side wall connection of the first inverted arch block and forms an accommodating space with the side wall of the first inverted arch block;
and/or at least one through hole is formed in the first inverted arch block along the longitudinal direction of the assembling unit.
In one embodiment, a positioning table is arranged on the surface of the first inverted arch block, which faces away from the arch ring group;
and/or the surfaces of the second inverted arch blocks, which are back to the arch ring group, are provided with positioning tables.
In one embodiment, matched tenons and mortises are arranged between the first inverted arch blocks in the odd-numbered assembly units and the even-numbered assembly units along the extending direction of the tunnel;
and/or the odd assembly units and the even assembly units along the extension direction of the tunnel are connected through steel bars;
and/or matched tenon and mortise are arranged between the second inverted arch blocks in the odd-numbered assembling units and the even-numbered assembling units along the extending direction of the tunnel;
and/or the odd-numbered splicing units and the even-numbered splicing units in the extending direction of the tunnel are connected through steel bars.
In one embodiment, a corresponding matched tenon and mortise are arranged between the first inverted arch block and the second inverted arch block;
and/or, the second inverted arch piece and with the second inverted arch piece is connected be provided with between the transition piece and correspond tenon and the tongue-and-groove that matches, the second inverted arch piece and with the second inverted arch piece is connected be provided with between the adjacent piece and correspond tenon and the tongue-and-groove that matches.
In one embodiment, the first inverted arch block is connected with the second inverted arch block by a bolt;
and/or the second inverted arch block is connected with the transition block or the adjacent block through a bolt;
and/or the transition block is connected with the adjacent block through a bolt;
and/or the abutting block is connected with the capping block through a bolt.
The utility model provides a pair of an assembled lining cutting structure for highway tunnel's beneficial effect lies in at least:
firstly, the inverted arch groups of the odd assembly units and the inverted arch groups of the even assembly units are assembled by through seams, so that the contact area between the inverted arch rings is large, the safety of the structure along the tunnel direction is good, and the construction is easier; the odd number is assembled the arch ring group of unit and the even number is assembled the arch ring group of unit and is adopted the staggered joint to assemble, helps improving the wholeness in tunnel, and rigidity is more even, and subsequent construction such as seam waterproofing of also being convenient for can promote the mechanical automation level in tunnel when the construction simultaneously.
And secondly, the duct pieces of the odd-numbered splicing units and the even-numbered splicing units are prefabricated blocks, and can be transported to a construction site for splicing through intensification and standardization without casting on the construction site, so that the site construction procedures are reduced, the generation of dust and construction waste is reduced, the labor condition is improved, the labor force is saved, the production quality of the splicing units is effectively ensured, the splicing units for construction are completely qualified, the construction quality is effectively ensured, and the engineering quality and durability are greatly improved.
Secondly, because the assembly unit adopts the prefabricated construction, can bear the car load after the inverted arch group is accomplished the construction, help going on of construction, shorten holistic activity duration, improve the efficiency of construction.
Moreover, the utility model provides a lining cutting structure, its design is maintained from the construction to the operation, from the degradation condition of country rock load release law to later stage rock etc., can both strictly adapt to the characteristics of mountain highway tunnel of brill method excavation, therefore is applicable to the construction in mountain highway tunnel completely.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an assembled lining structure for a road tunnel according to an embodiment of the present invention;
fig. 2 is a first schematic structural diagram of a splicing unit of an assembled lining structure for a highway tunnel according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a first assembly unit of an assembled lining structure for a highway tunnel according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of the assembled unit of the fabricated lining structure for a road tunnel according to the embodiment of the present invention;
FIG. 5 is a partially enlarged view of portion A of FIG. 4;
fig. 6 is a schematic structural diagram of a pitch arch group in an assembled lining structure for a highway tunnel according to an embodiment of the present invention;
fig. 7 is a third schematic structural diagram of a splicing unit of an assembled lining structure for a road tunnel according to an embodiment of the present invention;
fig. 8 is a fourth structural schematic view of the assembled unit of the fabricated lining structure for a road tunnel according to the embodiment of the present invention;
fig. 9 is a fifth structural schematic view of a splicing unit of an assembled lining structure for a road tunnel according to an embodiment of the present invention;
fig. 10 is a sixth schematic structural view of a built-up unit of an assembled lining structure for a road tunnel according to an embodiment of the present invention;
fig. 11 is a schematic view of a connection structure of adjacent first inverted arch blocks in an assembled lining structure for a highway tunnel according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
| 10 | lining structure | 11 | |
| 111 | Inverted |
1111 | First inverted |
| 11111 | |
11112 | Through |
| 11113 | |
11114 | First tongue-and- |
| 1112 | Second inverted |
11121 | |
| 11122 | |
1113 | Containing |
| 1114 | Positioning table | 1115 | |
| 112 | |
1121 | |
| 1122 | First |
1123 | |
| 1124 | |
1125 | |
| 1126 | |
113 | Bent |
| 114 | Steel bar |
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 1 and 2, the present embodiment provides an assembled lining structure 10 for a road tunnel (hereinafter, referred to as a lining structure) including odd-numbered assembly cells 101 and even-numbered assembly cells 102 alternately and cyclically arranged in a tunnel extending direction (i.e., cyclically arranged in a-B-a manner in the tunnel extending direction). The odd-numbered assembling units 101 and the even-numbered assembling units 102 respectively comprise an inverted arch group 111 and an arch ring group 112 which are connected end to end, the inverted arch group 111 is used for being connected with the bottom of the tunnel body, and the arch ring group 112 is used for being connected with the side wall and the top of the tunnel body. The inverted arch groups 111 of the odd assembly units 101 and the inverted arch groups 111 of the even assembly units 102 are assembled by adopting through seams, and the arch ring groups 112 of the odd assembly units 101 and the arch ring groups 112 of the even assembly units 102 are assembled by adopting staggered seams.
In this embodiment, the odd-numbered assembly units 101 and the even-numbered assembly units 102 are assembly units, and the inverted arch group 111 and the arch ring group 112 of the assembly units are reinforced concrete structures with certain joint stiffness, and can bear loads in construction and operation stages. The inverted arch group 111 and the arch ring group 112 are connected end to form a closed structure, and the cross section of the closed structure can be in a horseshoe shape. The inverted arch group 111 and the arch ring group 112 both comprise a plurality of prefabricated blocks, namely, the assembly units are assembled by being transported to a construction site after intensive and standardized production, and the cast-in-place construction is not needed. When assembling, the inverted arch group 111 can be firstly arranged at the bottom of the tunnel body, so that the inverted arch group 111 is fixedly connected with the bottom of the tunnel body. Then, the arch ring groups 112 of the odd-numbered assembling units 101 and the even-numbered assembling units 102 are fixed along the side wall and the top of the tunnel body in sequence, so that assembling is completed in the tunnel body. According to the construction of the tunnel, the above process is repeated continuously along the tunnel direction, so that the odd splicing units 101 and the even splicing units 102 can be alternately and circularly arranged along the extending direction of the tunnel.
When the arch ring group 112 is installed, the tunnel is good in integrity and uniform in rigidity when the staggered joint assembling is adopted, subsequent joints are more easily waterproof, and meanwhile, the mechanical automation level of the tunnel can be improved during construction, so that the arch ring group 112 of the odd assembling unit 101 and the even assembling unit 102 in the embodiment adopts the staggered joint assembling mode. When the inverted arch group 111 is installed, the inverted arch group 111 in this embodiment adopts a through-slit assembly mode because the contact area between the inverted arch rings is large, the safety of the structure in the tunnel direction is good, and the construction is easier by using the through-slit assembly mode. It should be understood that other construction processes may be involved in the construction of the building block, which are not listed completely herein.
Referring to fig. 2, further, the inverted arch group 111 includes a first inverted arch block 1111 and two second inverted arch blocks 1112 (also referred to as sidewall blocks) symmetrically disposed at both sides of the first inverted arch block 1111, and the first inverted arch block 1111 and the second inverted arch blocks 1112 are configured to be connected to the bottom of the tunnel body. The arch ring set 112 includes a capping block 1121, two adjoining blocks respectively disposed at two sides of the capping block 1121, and at least one transition block, the transition block is disposed between the second inverted arch block 1112 and the adjoining blocks, and the capping block 1121 may be a wedge-shaped tube piece. The arch ring set 112 is used for connecting with the side wall and the top of the tunnel body.
In this embodiment, the first inverted arch block 1111, the second inverted arch block 1112, the capping block 1121, the adjoining block and the transition block are all prefabricated blocks, and are assembled by being transported to a construction site after intensive and standardized production, so that cast-in-place construction at the construction site is not required. When assembling, the first inverted arch block 1111 and the two second inverted arch blocks 1112 may be connected to form the inverted arch group 111, and the inverted arch group 111 is disposed at the bottom of the tunnel body, so that the inverted arch group 111 is fixedly connected to the bottom of the tunnel body. Then, the transition block and the adjacent block are sequentially fixed along the side wall and the top of the tunnel body, and capping is performed through the capping block 1121, so that one assembling unit is assembled in the tunnel body. It should be understood that when assembling, not only the prefabricated blocks need to be connected with the tunnel, but also the prefabricated blocks between the adjacent assembling units need to be connected in front of each other to ensure the stable structure, so as to bear the load in the construction and operation stages.
In one embodiment, the lining structure 10 may be adapted for use in the construction of mountain road tunnels. At present, when the mountain highway tunnel is constructed, a drilling and blasting method is mainly adopted for construction, so that a cast-in-place mode is adopted when a lining structure is manufactured, the problems of intensive labor force, poor construction environment, serious crossed construction procedures and backward productivity exist, the construction quality is difficult to guarantee, early cracking, early deterioration, serious water leakage and difficult component replacement of a support and a lining are easy to occur. In addition, the shield construction method has gradually become the main method for constructing underground engineering such as urban underground railways, river-crossing and sea-crossing tunnels and the like. However, the existing shield segment structure system is not suitable for the construction of mountain road tunnels.
This embodiment provides a new lining structure 10, which can be effectively applied to the construction of mountain road tunnels.
Firstly, in the embodiment, the inverted arch groups 111 of the odd assembly units 101 and the inverted arch groups 111 of the even assembly units 102 are assembled by through seams, so that the contact area between the inverted arch rings is large, the safety of the structure along the tunnel direction is good, and the construction is easier; the arch ring group 112 of the odd-numbered assembling unit 101 and the arch ring group 112 of the even-numbered assembling unit 102 are assembled by staggered joints, so that the integrity of the tunnel is improved, the rigidity is more uniform, subsequent constructions of joint waterproofing and the like are facilitated, and the mechanical automation level of the tunnel can be improved during construction.
Secondly, the first inverted arch block 1111, the second inverted arch block 1112, the capping block 1121, the adjoining block and the transition block of the assembling unit in the embodiment are all prefabricated blocks, that is, the assembling unit can be assembled by being transported to a construction site through intensification and standardization like a shield segment without casting on site, so that not only are field construction procedures reduced, but also dust and construction waste are reduced, labor conditions are improved, labor force is saved, production quality of the assembling unit is effectively guaranteed, it is ensured that the assembling unit for construction is completely qualified, construction quality is effectively guaranteed, and engineering quality and durability are greatly improved.
Secondly, because the assembly unit adopts the prefabricated construction, can bear the car load after inverted arch group 111 accomplishes the construction, help going on of construction, shorten holistic activity duration, improve the efficiency of construction.
Moreover, the lining structure 10 provided by the embodiment can strictly adapt to the characteristics of the mountain road tunnel excavated by the drilling and blasting method from the construction to the operation maintenance and from the release rule of the surrounding rock load to the deterioration condition of the rock in the later period, and is completely suitable for the construction of the mountain road tunnel.
Of course, in other embodiments, the lining structure 10 provided in this embodiment may also be applied to other types of tunnel construction that is constructed by a drilling and blasting method, and is not limited to the above case.
Further, the number of the transition blocks may be set as required, and may be, for example, 1, 2, or even more. Referring to fig. 2, in the present embodiment, the number of the transition blocks is 2 for example, and the assembling unit is in a form of "5 + 3", where 5 refers to the number of the splicing blocks in the arch ring group 112, and 3 refers to the number of the upward arch blocks in the upward arch group 111. For convenience of description, two adjoining blocks are respectively denoted as a first adjoining block 1122 and a second adjoining block 1123, two transition blocks are respectively denoted as a first transition block 1124 and a second transition block 1125, and the positions of the first transition block 1124 and the second transition block 1125 may be set as needed. For example, referring to fig. 2, in the odd numbered construction units 101, a first transition block 1124 and a second transition block 1125 are connected to each other and between a first adjacent block 1122 and a second inverted block 1112, the first transition block 1124 is connected to the first adjacent block 1122, and the second transition block 1125 is connected to the second inverted block 1112. In the even-numbered construction units 102, the arrangement of the arch groups 112 is symmetrical to that of the arch groups 112 in the odd-numbered construction units 101. Of course, the first and second transition blocks 1124, 1125 in the building unit may be arranged in other ways, such as the first transition block 1124 being located between the first abutment block 1122 and a second inverted arch block 1112 and the second transition block 1125 being located between the second abutment block 1123 and another second inverted arch block 1112.
Referring to fig. 3, further, the sum of the internal angles of the closed structures formed by the end-to-end connection of the inverted arch group 111 and the arch ring group 112 is 360 degrees, wherein the sections of the inner and outer surfaces of the capping block 1121 are circular arcs, and the corresponding circular arc angle θ 1 is 16 ° to 40 °; the cross-sections of the inner and outer surfaces of the abutment blocks (including the first abutment block 1122 and the second abutment block 1123) are circular arcs corresponding to circular arc angles θ 2 and θ 3 of 32 ° to 60 °; the sections of the inner and outer surfaces of the transition block (including the first transition block 1124 and the second transition block 1125) are circular arcs, and the corresponding circular arc angles theta 4 and theta 5 are 20-60 degrees; the angle theta 6 corresponding to the inverted arch group 111 ranges from 140 degrees to 180 degrees.
Referring to fig. 3 and 4, in an embodiment, the arc angle θ 1 corresponding to the capping block 1121 is 18 °, the arc angle θ 2 corresponding to the first adjacent block 1122 is 36 °, the arc angle θ 3 corresponding to the second adjacent block 1123 is 55 °, the arc angle θ 4 corresponding to the first transition block 1124 is 54 °, and the arc angle θ 5 corresponding to the second transition block 1125 is 27 °, so that the capping block can be better attached to the side wall and the top of the tunnel body when being constructed in the tunnel body. Of course, in other embodiments, the angles of the capping block 1121, the abutment block, and the transition block may have other values, and are not limited to the above. The angle θ 6 corresponding to the inverted arch group 111 is 160 °, the angle θ 7 corresponding to the first inverted arch block 1111 is 120 °, and the angles θ 8 corresponding to the two second inverted arch blocks 1112 are both 20 °, so that the tunnel can be better attached to the bottom of the tunnel when being constructed in the tunnel.
Referring to fig. 7 and 8, in another embodiment, the arc angle θ 1 corresponding to the capping block 1121 is 18 °, the arc angle θ 2 corresponding to the first adjacent block 1122 is 36 °, the arc angle θ 3 corresponding to the second adjacent block 1123 is 58 °, the arc angle θ 4 corresponding to the first transition block 1124 is 54 °, and the arc angle θ 5 corresponding to the second transition block 1125 is 40 °, so that the capping block can be better attached to the side wall and the top of the tunnel body when being constructed in the tunnel body. Of course, in other embodiments, the angles of the capping block 1121, the abutment block, and the transition block may have other values, and are not limited to the above. The angle θ 6 corresponding to the inverted arch group 111 is 154 °, the angle θ 7 corresponding to the first inverted arch block 1111 is 120 °, and the angles θ 8 corresponding to the two second inverted arch blocks 1112 are both 17 °, so that the tunnel can be better attached to the bottom of the tunnel when being constructed in the tunnel.
Referring to fig. 9 and 10, in yet another embodiment, the arc angle θ 1 of the capping block 1121 is 40 °, the arc angle θ 2 of the first adjacent block 1122 is 40 °, the arc angle θ 3 of the second adjacent block 1123 is 40 °, the arc angle θ 4 of the first transition block 1124 is 40 °, and the arc angle θ 5 of the second transition block 1125 is 20 °, so as to ensure that the capping block can be better attached to the side wall and the top of the tunnel body when being constructed in the tunnel body. At this time, the sum of the inner angles of the capping block 1121, the first abutting block 1122, the second abutting block 1123, the first transition block 1124 and the second transition block 1125 is 180 °, and may correspond to having the same radius of curvature, which forms exactly one semicircle. The relative positions of the capping block 1121, the first abutting block 1122, the second abutting block 1123, the first transition block 1124 and the second transition block 1125 may be different according to the difference between the odd numbered building units and the even numbered building units, as shown in the figure (fig. 9 is a schematic structural view corresponding to the odd numbered building units, and fig. 10 is a schematic structural view corresponding to the even numbered building units).
The angle θ 6 corresponding to the inverted arch group 111 is 180 °, the angle θ 7 corresponding to the first inverted arch block 1111 is 120 °, and the angles θ 8 corresponding to the two second inverted arch blocks 1112 are both 30 °, so that the tunnel can be better attached to the bottom of the tunnel when being constructed in the tunnel. At this time, the sum of the internal angles of the first inverted arch 1111 and the two second inverted arch 1112 is 180 ° and correspond to have the same radius of curvature, which forms exactly one semicircle. It should be understood that the radius of the two semi-circles may be the same or different, and is not limited herein.
Of course, in other embodiments, the angles of the capping block 1121, the abutment block, and the transition block may have other values, and are not limited to the above. The angle of the set of inverted arches 111 may also be other values and is not limited to the above.
In one embodiment, the thicknesses of the capping block 1121, the adjacent block, and the transition block are 30cm to 80cm, and the thicknesses may be set as required, and may be the same or different. For example, the capping block 1121, the adjacent block and the transition block are connected in sequence and have the same thickness, and the thickness of the formed ring is 40 cm-60 cm, so that the formed arch ring group 112 can bear the pressure of surrounding rocks, the construction requirement is met, and the manufacturing, the transportation and the installation are facilitated.
Referring to fig. 3, in an embodiment, the width L of the inverted arch group 111 is 11.7m to 13.3m, which can be set according to the width of the bottom of the tunnel body. For example, the width L of the inverted arch group 111 may be 12.1m, wherein the width L1 of the first inverted arch 1111 is 0.87m, and the width L2 of the two second inverted arch blocks 1112 is 0.17m, which not only ensures that the first inverted arch block 1111 for driving has enough space for driving, but also ensures that the first inverted arch block 1111 has enough space on both sides for other layout.
Referring to fig. 6, in one embodiment, in order to facilitate driving after the building is completed, the surface of the first inverted arch 1111 facing the arch ring set 112 is provided with a groove 11111, the groove 11111 extends along the longitudinal direction of the splicing unit (i.e. along the extending direction of the tunnel), and the depth of the groove 11111 can be set according to the requirement. At least one through hole 11112 is further formed in the first inverted arch block 1111 along the longitudinal direction of the assembling unit, and the through hole 11112 serves as a hollow backfill layer, so that on one hand, the whole weight of the first inverted arch block 1111 can be reduced, the transportation and the construction are facilitated, and meanwhile, the consumption of concrete in the backfill layer is reduced; on the other hand, the through hole 11112 can be used for accommodating other components such as cables and the like, and can also be used for drainage and the like, so that the tunnel space is reasonably utilized. In one embodiment, the number of the through holes 11112 is two, and the two through holes 11112 are separated by a support column 11113, wherein the two through holes 11112 can be used separately, for example, one is used for accommodating cables, the other is used for draining water, etc., and the support column 11113 can also play a good role in support. Of course, in other embodiments, the number of the through holes 11112 may have other values, and is not limited herein.
Referring to fig. 2, in an embodiment, a surface of the second inverted arch block 1112 in the inverted arch group 111 facing the arch ring group 112 is an arc surface, the arc surface extends to a sidewall of the first inverted arch block 1111 to connect with the sidewall of the first inverted arch block 1111 to form an accommodating space 1113, the two accommodating spaces 1113 are symmetrically disposed on two sides of the first inverted arch block 1111, and the accommodating space 1113 may be used to accommodate cables and other components. Through setting up this accommodation space 1113, be convenient for carry out laying of cable etc. after the construction of accomplishing first inverted arch piece 1111, also can not exert an influence to the driving of first inverted arch piece 1111 simultaneously, help promoting holistic efficiency of construction. Of course, in other embodiments, the accommodating space 1113 may be in other forms, and is not limited to the above-mentioned form, as long as it can perform an accommodating function.
Referring to fig. 2 and 6, in an embodiment, a positioning table 1114 is disposed at a middle portion of a surface of the first inverted arch block 1111 facing away from the arch ring set 112, and a width of the positioning table 1114 may be set as required, and the positioning table may be cooperatively connected with a bottom of the tunnel body, so as to position the first inverted arch block 1111. Referring to fig. 7 and 8, in order to position the second inverted arch 1112, a positioning table 1114 is also provided on a surface of the second inverted arch 1112 facing away from the arch ring set 112 for positioning and installation during construction. Optionally, when the second inverted arch block 1112 is connected with the transition block, the positioning table 1114 is arranged at the edge of the second inverted arch block 1112 close to the transition block, and the positioning table 1114 is also arranged at the position of the transition block (the first transition block 1124 or the second transition block 1125) corresponding to the positioning table 1114, and the two positioning tables 1114 are in matching connection and can play a role in positioning and installation. When the second inverted arch block 1112 is connected with the adjacent block, the positioning table 1114 is arranged near the edge of the adjacent block 1112, and the position of the adjacent block (for example, the second adjacent block 1123) corresponding to the positioning table 1114 is also provided with the positioning table 1114, and the two positioning tables 1114 are matched and connected to play a role in positioning and installation.
Further, the connection mode between the pipe sheets in the odd splicing unit 101 and the even splicing unit 102 can be set according to the requirement.
Referring to fig. 6, in one embodiment, in order to make the first inverted arch block 1111 and the second inverted arch block 1112 connected firmly and stressed better, a matching tenon and mortise are provided between the first inverted arch block 1111 and the second inverted arch block 1112, for example, a first tenon 11121 is further provided on a side surface of the second inverted arch block 1112 facing the first inverted arch block 1111, a first mortise 11114 is correspondingly provided on the first inverted arch block 1111, and the first tenon 11121 is received in the first mortise 11114, thereby realizing a fixed connection between the first inverted arch block 1111 and the second inverted arch block 1112. Referring to fig. 7 and 8, in order to further enhance the connection stability of the two, the inverted arch set 111 further includes a bolt, which may be, for example, a tilt bolt 1115, and the first inverted arch block 1111 and the second inverted arch block 1112 are bolted together by the tilt bolt 1115, so that the connection is stable.
Referring to fig. 6, in one embodiment, in order to make the second inverted arch block 1112 and the transition block connected firmly and stressed better, a matched arc tenon and mortise are provided between the second inverted arch block 1112 and the transition block to improve the segment assembling precision and reduce the stress concentration. For example, the side surface of the second inverted arch block 1112 facing the transition block is further provided with a second tenon 11122, and the transition block is correspondingly provided with a second mortise in which the second tenon 11122 is received, so as to realize the fixed connection of the two. Similarly, a second tenon 11122 may also be provided on the side surface of the second inverted arch block 1112 facing the adjoining block when the second inverted arch block 1112 and the adjoining block are joined, with the corresponding adjoining block provided with the second mortise.
Referring to fig. 2, in one embodiment, adjacent blocks in the assembly unit are connected by a bolt, which may be a bent bolt 113 or another type of bolt, and is not limited herein. Specifically, the second inverted arch block 1112 is connected to its adjacent transition block or adjacent block by the bent bolt 113, the transition block is connected to its adjacent block by the bent bolt 113, and the adjacent block is connected to the capping block 1121 by the bent bolt 113. Of course, in other embodiments, the adjacent blocks in the assembly units can be connected to each other in other manners, and are not limited to the above-mentioned cases.
Further, the connection mode between the pipe pieces between the odd-numbered assembling units 101 and the even-numbered assembling units 102 can be set as required.
In one embodiment, in order to make the inverted arch groups 111 of the odd and even number of the assembled units 101 and 102 firmly connected and better stressed, the surfaces of the adjacent inverted arch groups 111 along the extending direction of the tunnel are provided with matched tenons and mortises. For example, a tenon and a mortise are arranged between the first inverted arch blocks 1111 of the adjacent odd-numbered assembling units 101 and even-numbered assembling units 102, and a tenon and a mortise are arranged between the second inverted arch blocks 1112 of the adjacent odd-numbered assembling units 101 and even-numbered assembling units 102, and the tenon is received in the corresponding mortise, so that the fixed connection between the two units is realized. Referring to fig. 11, in order to further enhance the connection stability of the odd-numbered assembly units 101 and the even-numbered assembly units 102, the first inverted arch blocks 1111 of the adjacent odd-numbered assembly units 101 and the first inverted arch blocks 1111 of the adjacent even-numbered assembly units 102 are connected through the steel bar 114, and the second inverted arch blocks 1112 of the adjacent odd-numbered assembly units 101 and the adjacent even-numbered assembly units 102 are connected through the steel bar 114, and the inverted arch groups 111 are firmly fixed by tensioning and locking ring by ring.
In one embodiment, in order to make the arch ring groups 112 of the odd-numbered construction units 101 and the even-numbered construction units 102 firmly connected and better stressed, the arch ring groups 112 of the adjacent odd-numbered construction units 101 and the even-numbered construction units 102 are connected through bolts. Of course, in other embodiments, the adjacent arch ring groups 112 of the odd and even splicing units 101 and 102 can be connected in other manners, which is not limited herein.
Referring to fig. 5, in one embodiment, each block (the capping block 1121, the adjacent block, and the transition block) of the arch ring set 112 is provided with a grouting hole 1126, so that a grouting layer can be formed between the arch ring set 112 and the side wall and the top of the tunnel body through the grouting hole during construction, and the thickness of the grouting layer can be 5cm to 15cm, thereby ensuring firm connection. Furthermore, at least one water stop perpendicular to the section of the assembly unit is arranged between the capping block 1121 and the adjacent block and between the adjacent block and the transition block, so that the waterproof effect of the assembly unit is effectively improved.
The present embodiment provides the fabricated lining structure 10 for a highway tunnel with advantageous effects including at least:
(1) at present, when a mountain road tunnel is excavated by a drilling and blasting method, the problems of poor construction environment, serious crossing of construction procedures and backward productivity exist, the construction quality is difficult to ensure, and early cracking, early deterioration, serious water leakage and difficult component dismantling and replacing of a support and a lining are easy to occur.
The first inverted arch block 1111, the second inverted arch block 1112, the capping block 1121, the abutting block and the transition block of the assembling unit in the embodiment are prefabricated blocks, and can be assembled by being transported to a construction site after intensification and standardization like a shield segment, and the assembling can be performed without performing cast-in-place on the construction site, so that the field construction procedures are reduced, the generation of dust and construction waste is reduced, the labor condition is improved, the labor force is saved, the production quality of the assembling unit is effectively ensured, the assembling unit for construction is completely qualified, the construction quality is effectively ensured, and the engineering quality and the durability are greatly improved.
(2) In the current construction mode, the processes are various from pouring to form removal, and the trolley and the like are also needed for assistance, so that narrow channels in the tunnel can be occupied for a long time, the construction period is prolonged, and the construction cost is increased.
The lining structure 10 of the embodiment is assembled on site, does not need to depend on trolley assistance, and can quickly pass through special environments such as severe cold, large deformation of soft rock, high heat and the like, so that the operation time is reduced; meanwhile, temporary supports such as an arch frame and a template are not needed, so that a large amount of supporting materials and labor force are saved, the construction period is shortened, and the manufacturing cost is reduced.
(3) At present, when constructing the tunnel invert, before the invert does not reach certain intensity, can only rely on the landing stage to stride across this section invert to the going on of maintaining the construction, the mechanical transportation difficulty in the hole.
Because assemble the unit and adopt prefabricated construction in this embodiment, can bear the car load after inverted arch group 111 accomplishes the construction, help going on of construction, shorten holistic activity duration, improve the efficiency of construction. Meanwhile, the lining structure 10 provided by the embodiment has strong working timeliness, and once the lining structure is assembled into a ring, the lining structure can bear the pressure of surrounding rocks.
(4) The embodiment adopts factory prefabricated assembly units, so that stable and good maintenance conditions are easily provided, high-strength prefabricated components can be obtained, and the thickness of the components is reduced.
(5) In the embodiment, the inverted arch group 111 is formed by assembling the first inverted arch block 1111 and the two second inverted arch blocks 1112, on one hand, the inverted arch group 111 is divided into a plurality of blocks, so that the weight of each block is reduced, and the transportation and the assembly are convenient; on the other hand, the division of functions is also realized, that is, the first inverted arch block 1111 arranged in the middle can be used for driving a vehicle, and the second inverted arch blocks 1112 arranged on both sides can be used for arranging other components such as cables.
(6) The lining structure 10 provided in this embodiment is designed from construction to operation and maintenance, and from a releasing rule of a surrounding rock load to a deterioration condition of a rock in a later period, and the like, and can strictly adapt to the characteristics of a mountain road tunnel excavated by a drilling and blasting method, so that the lining structure is completely suitable for the construction of the mountain road tunnel.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An assembled lining structure for a highway tunnel is characterized by comprising odd-numbered splicing units and even-numbered splicing units which are alternately and circularly distributed along the extending direction of the tunnel;
the odd-numbered assembling units and the even-numbered assembling units respectively comprise an inverted arch group and an arch ring group which are connected end to end, the inverted arch group is used for being connected with the bottom of the tunnel body, and the arch ring group is used for being connected with the side wall and the top of the tunnel body;
the odd number assembling units and the even number assembling units are assembled by adopting straight joints, and the odd number assembling units and the even number assembling units are assembled by adopting staggered joints.
2. The fabricated lining structure for a road tunnel of claim 1, wherein the inverted arch set comprises a first inverted arch block and two second inverted arch blocks symmetrically disposed at both sides of the first inverted arch block, the first and second inverted arch blocks being adapted to be connected to a bottom of a tunnel body;
the arch ring group comprises a top sealing block, two adjacent blocks and at least one transition block, wherein the top sealing block is in smooth transition connection with the adjacent blocks, the two adjacent blocks are respectively arranged on two sides of the top sealing block, and the transition block is arranged between the second inverted arch block and the adjacent blocks.
3. The fabricated lining structure for a road tunnel of claim 2, wherein the number of the transition blocks is two;
the two transition blocks are connected with each other and arranged between the second inverted arch block and the adjacent block;
or the two transition blocks are respectively arranged on one side of the two adjacent blocks back to the top sealing block.
4. The fabricated lining structure for a highway tunnel of claim 2, wherein the arc angle of the capping block is 16 ° to 40 °, the arc angle of the neighboring block is 32 ° to 60 °, and the arc angle of the transition block is 20 ° to 60 °.
5. The fabricated lining structure for a road tunnel of claim 2, wherein the capping block, the abutment block, and the transition block have a thickness of 30cm to 80 cm;
and/or the width of the inverted arch group is 11.7-13.3 m.
6. The fabricated lining structure for a road tunnel of claim 2, wherein the second inverted arch block is provided with an arc surface extending to be connected to a side wall of the first inverted arch block and forming an accommodating space with the side wall of the first inverted arch block;
and/or at least one through hole is formed in the first inverted arch block along the longitudinal direction of the assembling unit.
7. The fabricated lining structure for a road tunnel of claim 2, wherein a surface of the first inverted arch block facing away from the arch ring set is provided with a positioning table;
and/or the surfaces of the second inverted arch blocks, which are back to the arch ring group, are provided with positioning tables.
8. The fabricated lining structure for a road tunnel as claimed in any one of claims 2 to 7, wherein matched tenons and mortises are provided between the first inverted arch blocks in odd-numbered assembly units and even-numbered assembly units along the extending direction of the tunnel;
and/or the odd assembly units and the even assembly units along the extension direction of the tunnel are connected through steel bars;
and/or matched tenon and mortise are arranged between the second inverted arch blocks in the odd-numbered assembling units and the even-numbered assembling units along the extending direction of the tunnel;
and/or the odd-numbered splicing units and the even-numbered splicing units in the extending direction of the tunnel are connected through steel bars.
9. The fabricated lining structure for road tunnels as claimed in any one of claims 2 to 7, wherein a corresponding matching tenon and mortise are provided between the first inverted arch block and the second inverted arch block;
and/or, the second inverted arch piece and with the second inverted arch piece is connected be provided with between the transition piece and correspond tenon and the tongue-and-groove that matches, the second inverted arch piece and with the second inverted arch piece is connected be provided with between the adjacent piece and correspond tenon and the tongue-and-groove that matches.
10. The fabricated lining structure for a road tunnel of any one of claims 2 to 7,
the first inverted arch block is connected with the second inverted arch block through a bolt;
and/or the second inverted arch block is connected with the transition block or the adjacent block through a bolt;
and/or the transition block is connected with the adjacent block through a bolt;
and/or the abutting block is connected with the capping block through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921053975.5U CN211314228U (en) | 2019-07-08 | 2019-07-08 | A assembled lining cutting structure for highway tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921053975.5U CN211314228U (en) | 2019-07-08 | 2019-07-08 | A assembled lining cutting structure for highway tunnel |
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| Publication Number | Publication Date |
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| CN211314228U true CN211314228U (en) | 2020-08-21 |
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| CN201921053975.5U Expired - Fee Related CN211314228U (en) | 2019-07-08 | 2019-07-08 | A assembled lining cutting structure for highway tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486040A (en) * | 2019-07-08 | 2019-11-22 | 重庆交通大学 | A kind of prefbricated tunnel lining structure for vcehicular tunnel |
| CN114086985A (en) * | 2021-11-19 | 2022-02-25 | 浙江数智交院科技股份有限公司 | Assembly type tunnel structure and construction method thereof |
| CN114215548A (en) * | 2022-01-20 | 2022-03-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method for treating lining defect of tunnel of operation railway in assembled type |
-
2019
- 2019-07-08 CN CN201921053975.5U patent/CN211314228U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486040A (en) * | 2019-07-08 | 2019-11-22 | 重庆交通大学 | A kind of prefbricated tunnel lining structure for vcehicular tunnel |
| CN110486040B (en) * | 2019-07-08 | 2024-03-08 | 重庆交通大学 | Assembled lining structure for highway tunnel |
| CN114086985A (en) * | 2021-11-19 | 2022-02-25 | 浙江数智交院科技股份有限公司 | Assembly type tunnel structure and construction method thereof |
| CN114215548A (en) * | 2022-01-20 | 2022-03-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method for treating lining defect of tunnel of operation railway in assembled type |
| CN114215548B (en) * | 2022-01-20 | 2023-12-29 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method for repairing lining damage of operation railway tunnel by assembling type lining |
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Granted publication date: 20200821 |