CN211038674U - Reinforced concrete arch protection structure of tunnel at exposed section of slope volume gully - Google Patents
Reinforced concrete arch protection structure of tunnel at exposed section of slope volume gully Download PDFInfo
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- CN211038674U CN211038674U CN201922113038.0U CN201922113038U CN211038674U CN 211038674 U CN211038674 U CN 211038674U CN 201922113038 U CN201922113038 U CN 201922113038U CN 211038674 U CN211038674 U CN 211038674U
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Abstract
The utility model discloses a reinforced concrete of slope stack gully emergence section tunnel protects hunch structure, it includes arc steel reinforcement cage to protect hunch steel reinforcement cage, level setting is at first rectangle steel reinforcement cage and the second rectangle steel reinforcement cage at arc steel reinforcement cage both ends respectively, arc steel reinforcement cage includes upper arc reinforcing bar net and lower floor's arc reinforcing bar net, upper arc reinforcing bar net includes a plurality of upper arc main muscle and a plurality of first upper longitudinal reinforcement, lower floor's arc reinforcing bar net includes a plurality of lower floor's arc main muscle and a plurality of first lower floor's longitudinal reinforcement, connect through first colluding the muscle between corresponding first upper longitudinal reinforcement and the first lower floor's longitudinal reinforcement, first rectangle steel reinforcement cage and second rectangle steel reinforcement cage all include upper rectangle reinforcing bar net and lower floor's rectangle reinforcing bar net. The utility model discloses a reinforced concrete protects both ends of encircleing structure and can play the effect of protection slope volume landslide, and the huge impact force that produces when first rectangle steel reinforcement cage and second rectangle steel reinforcement cage can bear slope volume landslide can guarantee construction safety.
Description
Technical Field
The utility model belongs to the technical field of the tunnel construction, concretely relates to reinforced concrete protects hunch structure in slope volume sluiceway exposition section tunnel.
Background
The slope body is a weathered product near the upper part of the hillside, moves under the combined action of gravity and sheet flow, and substances accumulated in the middle part or foot parts of the hillside are usually found in mountain areas and high-order areas in foot areas. Slope accumulation is common in mountainous areas with humid climate, and particularly common in mountainous areas with rare vegetation on the uphill slope and easy scouring and with gentle downhill terrain. The method is characterized in that the sorting degree of particles is poor, the grinding degree of rock debris is not high, and the lower part of a hillside is provided with a layer parallel to the slope surface. The slope accumulations are intermittently accumulated under the action of sheet flow, the structure of the slope accumulations is complex, and the buried section of the ancient soil can be seen sometimes. The sand slope tunnels are located in three groups of Suvivillage in black stream town in Qianjiang district of Chongqing city, are bidirectional four-lane minimum clear distance tunnels, and are designed to have a line spacing of 8.9-11.2 m, a left line length 448m and a right line length 450.24 m. The sand slope tunnel belongs to a structure denudation erosion deep cutting low mountain-middle mountain landform, and the intersection angle of the tunnel and the rock stratum trend is 71-88 degrees. The highest elevation point of the tunnel in the tunnel site area is located on the crest of K66+450, the elevation is 615m, and the maximum buried depth of the tunnel is about 65 m. The first generation of vegetation of the tunnel site area on the top of the slope is rare, the part is exposed by bedrock, and the regions of gentle slope and valley are mostly covered by the fourth series residual slope lamination. The tunnel right line YK66+250-YK66+285 section is designed as a gully shallow-buried section, the buried depth is unequal to-6 m-3m, the right sides of the arch part and the arch waist are all exposed, the left side arch waist is in a mountain with the slope of about 70 degrees, and serious terrain bias exists, so that in order to ensure the construction safety, a reinforced concrete arch protection structure of the gully exposed section tunnel with a slope volume needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a reinforced concrete protects arch structure in slope cubage sluiceway exposition section tunnel, its simple structure, reasonable in design, reinforced concrete protects the effect that the both ends of arch structure can play protection slope cubage landslide, and the huge impact force that produces when first rectangle steel reinforcement cage and second rectangle steel reinforcement cage can bear slope cubage landslide can guarantee construction safety.
In order to solve the technical problem, the utility model discloses a technical scheme is: the reinforced concrete arch protection structure of the slope volume gully exposed section tunnel comprises an arch protection reinforcement cage, an arch protection template assembly and a segmented layered pouring formed concrete pouring layer, wherein the arch protection template assembly and the segmented layered pouring formed concrete pouring layer are arranged outside the arch protection reinforcement cage, and the reinforced concrete arch protection structure is characterized in that: the arch protection reinforcement cage comprises an arc reinforcement cage, a first rectangular reinforcement cage and a second rectangular reinforcement cage which are horizontally arranged at two ends of the arc reinforcement cage respectively, the arc reinforcement cage comprises an upper arc reinforcement mesh and a lower arc reinforcement mesh parallel to the upper arc reinforcement mesh, the upper arc reinforcement mesh comprises a plurality of upper arc main reinforcements arranged at intervals and a plurality of first upper longitudinal reinforcements interwoven with the upper arc main reinforcements, the lower arc reinforcement mesh comprises a plurality of lower arc main reinforcements one-to-one corresponding to the upper arc main reinforcements and a plurality of first lower longitudinal reinforcements interwoven with the lower arc main reinforcements, the corresponding first upper longitudinal reinforcements and the first lower longitudinal reinforcements are connected through first hook reinforcements, the first rectangular reinforcement cage and the second rectangular reinforcement cage both comprise an upper rectangular reinforcement mesh and a lower rectangular reinforcement mesh parallel to the upper rectangular reinforcement mesh, the upper rectangular reinforcing mesh comprises a plurality of upper horizontal reinforcing bars in one-to-one correspondence with the upper arc-shaped main reinforcing bars and a plurality of second upper longitudinal reinforcing bars in interwoven arrangement with the upper horizontal reinforcing bars, the lower rectangular reinforcing mesh comprises a plurality of lower horizontal reinforcing bars in one-to-one correspondence with the lower arc-shaped main reinforcing bars and a plurality of second lower longitudinal reinforcing bars in interwoven arrangement with the lower horizontal reinforcing bars, the corresponding second upper longitudinal reinforcing bars and the second lower longitudinal reinforcing bars are connected through second hook bars, and the value range of the vertical distance H between the second lower longitudinal reinforcing bars of the first rectangular reinforcing cage and the second lower longitudinal reinforcing bars of the second rectangular reinforcing cage is 1 m-1.5 m.
The reinforced concrete arch protecting structure of the tunnel at the exposed section of the slope volume gully is characterized in that: the upper horizontal reinforcing steel bars and the ends connected with the upper arc-shaped main ribs extend to the lower arc-shaped main ribs.
The reinforced concrete arch protecting structure of the tunnel at the exposed section of the slope volume gully is characterized in that: the vertical distance between the upper layer arc-shaped main rib and the lower layer arc-shaped main rib ranges from 80cm to 90 cm.
The reinforced concrete arch protecting structure of the tunnel at the exposed section of the slope volume gully is characterized in that: the distance between two adjacent upper arc main ribs is equal to the distance between two adjacent lower arc main ribs, and the value range of the distance between two adjacent upper arc main ribs is 20-25 cm.
The reinforced concrete arch protecting structure of the tunnel at the exposed section of the slope volume gully is characterized in that: the first hook rib and the second hook rib are identical in structure, and bent hooks are arranged at two ends of the first hook rib and two ends of the second hook rib.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses an arching steel reinforcement cage includes arc steel reinforcement cage, first rectangle steel reinforcement cage and second rectangle steel reinforcement cage level setting respectively are at the both ends of arc steel reinforcement cage, in the slope volume gully emergence segment tunnel construction, because first rectangle steel reinforcement cage and second rectangle steel reinforcement cage all are the level setting, when reinforced concrete arching structure pour the shaping and accomplish the back, reinforced concrete arching structure's both ends can play the effect of protection slope volume landslide, and the arching steel reinforcement cage is as reinforced concrete arching structure's steel reinforcement cage, and has stable in structure, the big advantage of intensity.
2. The utility model discloses an arc steel reinforcement cage includes upper arc reinforcing bar net and lower floor's arc reinforcing bar net, lower floor's arc reinforcing bar net parallels with upper arc reinforcing bar net, upper arc reinforcing bar net is interweaved by a plurality of upper arc owner muscle and a plurality of first upper longitudinal reinforcement and forms, lower floor's arc reinforcing bar net is interweaved by a plurality of lower floor's arc owner muscle and a plurality of first lower longitudinal reinforcement and forms, lower floor's arc owner muscle and upper arc owner muscle one-to-one, and connect through first colluding the muscle between corresponding first upper longitudinal reinforcement and the first lower longitudinal reinforcement, the radian of arc steel reinforcement cage can satisfy the project requirement that the slope stack gully goes out the exposure section tunnel, moreover, the steam generator is simple in structure, regularity is strong, interchangeability is high, when ligature arc steel reinforcement cage, do not need complicated positioner, and is easy and simple to handle.
3. The utility model discloses an one end that upper strata horizontal reinforcement and upper arc owner muscle are connected extends to the arc owner muscle of lower floor on, can strengthen between first rectangle steel reinforcement cage and the arc steel reinforcement cage and between second rectangle steel reinforcement cage and the arc steel reinforcement cage the fastness of being connected for first rectangle steel reinforcement cage and second rectangle steel reinforcement cage produce the huge impact force when can bearing the slope volume landslide, excellent in use effect.
4. The utility model has the advantages of simple structure and reasonable design, low in manufacturing cost, facilitate promotion is used.
To sum up, the utility model has the advantages of simple structure and reasonable design, the effect of protection slope volume landslide can be played at reinforced concrete fender arch structure's both ends, and the huge impact force that produces when first rectangle steel reinforcement cage and second rectangle steel reinforcement cage can bear slope volume landslide can guarantee construction safety.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Description of reference numerals:
1-upper layer arc main reinforcement; 1-2-first upper longitudinal rebar; 2-1-lower layer arc main rib;
2-first lower layer longitudinal steel bar; 3, first hook ribs;
4-second hook rib; 5-1-upper horizontal steel bar;
5-1-a second upper layer of longitudinal steel bars; 6-1-lower horizontal steel bar;
6-2-second lower layer longitudinal steel bar.
Detailed Description
As shown in fig. 1 and 2, the utility model discloses a protect encircleing the steel reinforcement cage, enclosing and establishing protect the fender in encircleing the steel reinforcement cage outside and encircle template subassembly and segmentation layering and pour fashioned concrete placement layer, its characterized in that: the arch protection reinforcement cage comprises an arc reinforcement cage, a first rectangular reinforcement cage and a second rectangular reinforcement cage which are horizontally arranged at two ends of the arc reinforcement cage respectively, the arc reinforcement cage comprises an upper layer arc reinforcement mesh and a lower layer arc reinforcement mesh parallel to the upper layer arc reinforcement mesh, the upper layer arc reinforcement mesh comprises a plurality of upper layer arc main reinforcements 1-1 arranged at intervals and a plurality of first upper layer longitudinal reinforcements 1-2 interwoven with the upper layer arc main reinforcements 1-1, the lower layer arc reinforcement mesh comprises a plurality of lower layer arc main reinforcements 2-1 corresponding to the upper layer arc main reinforcements 1-1 one by one and a plurality of first lower layer longitudinal reinforcements 2-2 interwoven with the lower layer arc main reinforcements 2-1, and the corresponding first upper layer longitudinal reinforcements 1-2 and the first lower layer longitudinal reinforcements 2-2 are connected through first hook reinforcements 3, the first rectangular reinforcing cage and the second rectangular reinforcing cage both comprise an upper rectangular reinforcing mesh and a lower rectangular reinforcing mesh parallel to the upper rectangular reinforcing mesh, the upper rectangular reinforcing mesh comprises a plurality of upper horizontal reinforcing bars 5-1 in one-to-one correspondence with the upper arc-shaped main bars 1-1 and a plurality of second upper longitudinal reinforcing bars 5-2 interwoven with the upper horizontal reinforcing bars 5-1, the lower rectangular reinforcing mesh comprises a plurality of lower horizontal reinforcing bars 6-1 in one-to-one correspondence with the lower arc-shaped main bars 2-1 and a plurality of second lower longitudinal reinforcing bars 6-2 interwoven with the lower horizontal reinforcing bars 6-1, the corresponding second upper longitudinal reinforcing bars 5-2 and the second lower longitudinal reinforcing bars 6-2 are connected through second hook bars 4, and the second lower longitudinal reinforcing bars 6-2 of the first rectangular reinforcing cage and the second rectangular reinforcing cage are connected through second hook bars 4 The vertical distance H between the lower longitudinal steel bars 6-2 ranges from 1m to 1.5 m.
In this embodiment, the arch protection steel reinforcement cage includes arc steel reinforcement cage, first rectangle steel reinforcement cage and second rectangle steel reinforcement cage, and first rectangle steel reinforcement cage and second rectangle steel reinforcement cage level respectively sets up the both ends of arc steel reinforcement cage, in slope cubage sluiceway exposure section tunnel construction, because first rectangle steel reinforcement cage and second rectangle steel reinforcement cage all are the level setting, after reinforced concrete arch protection structure pouring shaping is accomplished, reinforced concrete arch protection structure's both ends can play the effect of protection slope cubage landslide, and arch protection steel reinforcement cage has stable in structure, the big advantage of intensity as reinforced concrete arch protection structure's framework of steel reinforcement.
In this embodiment, the arc-shaped reinforcement cage includes an upper arc-shaped reinforcement mesh and a lower arc-shaped reinforcement mesh, the lower arc-shaped reinforcement mesh is parallel to the upper arc-shaped reinforcement mesh, the upper arc-shaped reinforcement mesh is formed by interweaving a plurality of upper arc-shaped main reinforcements 1-1 and a plurality of first upper longitudinal reinforcements 1-2, the lower arc-shaped reinforcement mesh is formed by interweaving a plurality of lower arc-shaped main reinforcements 2-1 and a plurality of first lower longitudinal reinforcements 2-2, the lower arc-shaped main reinforcements 2-1 correspond to the upper arc-shaped main reinforcements 1-1 one by one, the corresponding first upper longitudinal reinforcements 1-2 and the corresponding first lower longitudinal reinforcements 2-2 are connected through first hook reinforcements 3, the radian of the arc-shaped reinforcement cage can meet the design requirement of a tunnel at an exposed section of a slope stack gully, the structure is simple, the regularity is strong, and the interchangeability is high, when the arc-shaped reinforcement cage is bound, a complex positioning device is not needed, and the operation is simple and convenient.
In this embodiment, the first rectangular steel reinforcement cage and the second rectangular steel reinforcement cage both include an upper rectangular steel reinforcement mesh and a lower rectangular steel reinforcement mesh, the upper rectangular steel reinforcement mesh is formed by interweaving a plurality of upper horizontal steel reinforcements 5-1 and a plurality of second upper longitudinal steel reinforcements 5-2, the plurality of upper horizontal steel reinforcements 5-1 correspond to the plurality of upper arc-shaped main reinforcements 1-1 one by one, the lower rectangular steel reinforcement mesh includes a plurality of lower horizontal steel reinforcements 6-1 and a plurality of second lower longitudinal steel reinforcements 6-2, the plurality of lower horizontal steel reinforcements 6-1 correspond to the lower arc-shaped main reinforcements 2-1 one by one, the corresponding second upper longitudinal steel reinforcements 5-2 and the second lower longitudinal steel reinforcements 6-2 are connected by second hook reinforcements 4, the first rectangular steel reinforcement cage and the second rectangular steel reinforcement cage have the same structure, high strength, good stability, low construction strength and high efficiency.
In this embodiment, the upper horizontal steel bar 5-1 and the one end that upper arc owner muscle 1-1 is connected extend to on the arc owner muscle 2-1 of lower floor, can strengthen between first rectangle steel reinforcement cage and the arc steel reinforcement cage and the fastness of being connected between second rectangle steel reinforcement cage and the arc steel reinforcement cage for first rectangle steel reinforcement cage and second rectangle steel reinforcement cage can bear the huge impact force that produces when the slope volume landslide, excellent in use effect.
In this embodiment, the vertical distance between the upper layer arc-shaped main rib 1-1 and the lower layer arc-shaped main rib 1-2 ranges from 80cm to 90 cm.
In this embodiment, the distance between two adjacent upper-layer arc-shaped main ribs 1-1 is equal to the distance between two adjacent lower-layer arc-shaped main ribs 1-2, and the range of the distance between two adjacent upper-layer arc-shaped main ribs 1-1 is 20cm to 25 cm.
In this embodiment, the first rib 3 that colludes with the second colludes the structure of muscle 4 the same, the first rib 3 that colludes with the second colludes the both ends of muscle 4 and all is provided with the hook.
During actual use, after the construction of back pressure backfill is completed, the construction of the reinforced concrete arch protection structure is carried out, the thickness of the reinforced concrete arch protection structure is 1m, and in the construction process, firstly, arch protection reinforcement cages are bound, and the arch protection reinforcement cages are hoisted; secondly, after the arch protection reinforcement cage is hoisted, an arch protection template assembly is laid on the outer side of the arch protection reinforcement cage, a top template in the arch protection template assembly is reinforced by square timbers and steel pipes, and a bottom template in the arch protection template assembly is reinforced by backfill; and then, concrete is poured by adopting a C30 concrete sectional and layered pumping mode, the length of each pouring is 9m, the height of each layer of pouring is not more than 1.5m, and the layering time is not more than 4 hours, so that the forming quality of the reinforced concrete arch protection structure is ensured, and the construction safety is ensured.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (5)
1. The reinforced concrete arch protection structure of the slope volume gully exposed section tunnel comprises an arch protection reinforcement cage, an arch protection template assembly and a segmented layered pouring formed concrete pouring layer, wherein the arch protection template assembly and the segmented layered pouring formed concrete pouring layer are arranged outside the arch protection reinforcement cage, and the reinforced concrete arch protection structure is characterized in that: the arch protection reinforcement cage comprises an arc reinforcement cage, a first rectangular reinforcement cage and a second rectangular reinforcement cage, wherein the first rectangular reinforcement cage and the second rectangular reinforcement cage are horizontally arranged at two ends of the arc reinforcement cage respectively, the arc reinforcement cage comprises an upper layer arc reinforcement mesh and a lower layer arc reinforcement mesh parallel to the upper layer arc reinforcement mesh, the upper layer arc reinforcement mesh comprises a plurality of upper layer arc main reinforcements (1-1) arranged at intervals and a plurality of first upper layer longitudinal reinforcements (1-2) interwoven with the upper layer arc main reinforcements (1-1), the lower layer arc reinforcement mesh comprises a plurality of lower layer arc main reinforcements (2-1) corresponding to the upper layer arc main reinforcements (1-1) one by one and a plurality of first lower layer longitudinal reinforcements (2-2) interwoven with the lower layer arc main reinforcements (2-1), and the first upper layer longitudinal reinforcements (1-2) and the first lower layer longitudinal reinforcements (2-2) corresponding to each other are hooked through first reinforcements (3) The first rectangular reinforcing cage and the second rectangular reinforcing cage both comprise an upper layer rectangular reinforcing mesh and a lower layer rectangular reinforcing mesh parallel to the upper layer rectangular reinforcing mesh, the upper layer rectangular reinforcing mesh comprises a plurality of upper layer horizontal reinforcing bars (5-1) which are in one-to-one correspondence with the upper layer arc-shaped main reinforcements (1-1) and a plurality of second upper layer longitudinal reinforcing bars (5-2) which are interwoven with the upper layer horizontal reinforcing bars (5-1), the lower layer rectangular reinforcing mesh comprises a plurality of lower layer horizontal reinforcing bars (6-1) which are in one-to-one correspondence with the lower layer arc-shaped main reinforcements (2-1) and a plurality of second lower layer longitudinal reinforcing bars (6-2) which are interwoven with the lower layer horizontal reinforcing bars (6-1), and the corresponding second upper layer longitudinal reinforcing bars (5-2) and second lower layer longitudinal reinforcing bars (6-2) are connected through second hook bars (4), the value range of the vertical distance H between the second lower-layer longitudinal steel bar (6-2) of the first rectangular steel bar cage and the second lower-layer longitudinal steel bar (6-2) of the second rectangular steel bar cage is 1 m-1.5 m.
2. The reinforced concrete arch protecting structure of the slope volume gully exposed section tunnel according to claim 1, characterized in that: one end of the upper-layer horizontal steel bar (5-1) connected with the upper-layer arc-shaped main bar (1-1) extends to the lower-layer arc-shaped main bar (2-1).
3. The reinforced concrete arch protecting structure of the slope volume gully exposed section tunnel according to claim 1, characterized in that: the value range of the vertical distance between the upper layer arc-shaped main rib (1-1) and the lower layer arc-shaped main rib (2-1) is 80-90 cm.
4. The reinforced concrete arch protecting structure of the slope volume gully exposed section tunnel according to claim 1, characterized in that: the distance between two adjacent upper-layer arc-shaped main ribs (1-1) is equal to the distance between two adjacent lower-layer arc-shaped main ribs (2-1), and the value range of the distance between two adjacent upper-layer arc-shaped main ribs (1-1) is 20-25 cm.
5. The reinforced concrete arch protecting structure of the slope volume gully exposed section tunnel according to claim 1, characterized in that: the first hook rib (3) and the second hook rib (4) are identical in structure, and the two ends of the first hook rib (3) and the second hook rib (4) are respectively provided with a hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922113038.0U CN211038674U (en) | 2019-11-29 | 2019-11-29 | Reinforced concrete arch protection structure of tunnel at exposed section of slope volume gully |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922113038.0U CN211038674U (en) | 2019-11-29 | 2019-11-29 | Reinforced concrete arch protection structure of tunnel at exposed section of slope volume gully |
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| CN211038674U true CN211038674U (en) | 2020-07-17 |
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| CN201922113038.0U Active CN211038674U (en) | 2019-11-29 | 2019-11-29 | Reinforced concrete arch protection structure of tunnel at exposed section of slope volume gully |
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