CN219018369U - Door type structure of current cable trench is consolidated in non-excavation - Google Patents
Door type structure of current cable trench is consolidated in non-excavation Download PDFInfo
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- CN219018369U CN219018369U CN202223425287.1U CN202223425287U CN219018369U CN 219018369 U CN219018369 U CN 219018369U CN 202223425287 U CN202223425287 U CN 202223425287U CN 219018369 U CN219018369 U CN 219018369U
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Abstract
The utility model relates to a gate structure of a trenchless reinforced current cable duct, which is applied to the current cable duct and comprises a plurality of micro piles and a plurality of prefabricated cover plates, wherein the micro piles are divided into two rows and are respectively arranged on the outer sides of the side walls of the two opposite sides of the current cable duct, beam pads are arranged at the tops of the micro piles, the prefabricated cover plates are arranged between the beam pads at the two sides, the two ends of the prefabricated cover plates are respectively positioned on the beam pads at the two sides, and the plurality of prefabricated cover plates are arranged side by side along the length direction of the current cable duct. Through drilling and arranging miniature stake in rows in current situation cable pit both sides, bear vertical ground load and level to soil and water pressure, avoid the heavy excavation to influence current situation pipeline to miniature stake pile tip gets into the bearing layer, subsides for traditional reinforcement method less, has guaranteed the safety of current situation cable pit, bears the load through the roof of gate structure and the miniature stake pile body in both sides, guarantees that current situation cable pit side wall and bottom plate are not stressed, simple structure, easy construction does not influence the normal use of cable.
Description
Technical Field
The utility model relates to the technical field of cable burying, in particular to a gate structure of a trenchless reinforced current cable trench.
Background
Along with the development of cities and the urgent need of widening and reconstruction of roads in old urban areas, when many current-situation roads are reconstructed, the power trench of a brick-concrete structure under the current-situation sidewalk is not considered to be removed due to the function requirement, after the roads are reconstructed, the power trench is positioned under a non-motor lane after the roads are reconstructed, the roads are additionally paved and heightened, and the strength and crack checking calculation of the existing cover plates, side walls and bottom plates of the cable trench do not meet the design requirement after the reconstruction according to the current standard, so the current-situation power trench is considered to be structurally reinforced.
The current cable trench is reinforced to avoid the influence on the current pipeline as much as possible, and the conventional reinforcing method cannot meet the requirement if the current cable trench is enlarged, the bottom plate is thickened, and the side wall is thickened to be excavated greatly. And in the construction process, certain damage can be caused to the current cable.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a gate structure of a trenchless reinforced current cable trench aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: the utility model provides a gate-type structure of current cable pit is consolidated in non-excavation, is applied to current cable pit, includes many miniature stake and polylith prefabricated apron, many miniature stake divide into two rows respectively along current cable pit's length direction set up in current cable pit's relative both sides lateral wall outside, miniature stake's top is provided with the roof beam pad, and both sides the roof beam pad sets up relatively, and both sides be provided with between the roof beam pad and be used for transmitting and bear the weight of the vehicle load prefabricated apron, just the both ends of prefabricated apron are located the both sides respectively on the roof beam pad, polylith prefabricated apron is followed current cable pit's length direction sets up side by side.
The beneficial effects of the utility model are as follows: according to the gate structure of the trenchless reinforced current cable duct, the current cable duct is drilled on two sides of the current cable duct and the micro piles are arranged in rows, so that vertical ground load and horizontal water and soil pressure are borne, the current pipeline is prevented from being influenced by heavy excavation, the pile ends of the micro piles enter the bearing layer, the settlement is smaller compared with the conventional reinforcing method, the safety of the current cable duct is ensured, the load is borne through the top plate and the micro pile bodies on two sides of the gate structure, the side wall and the bottom plate of the current cable duct are not stressed, the structure is simple, the construction is easy, and the normal use of a cable is not influenced.
Based on the technical scheme, the utility model can also be improved as follows:
further: the beam pad is L-shaped, two side edges of the beam pad face the horizontal direction and the vertical direction respectively, and two ends of the prefabricated cover plate are located on the horizontal side edges of the beam pad on two sides respectively.
The beneficial effects of the above-mentioned further scheme are: through setting up L type beam pad, the party can be so that the horizontal side of beam pad with miniature stake forms a whole, and on the other hand can be so that prefabricated apron is put in the horizontal side of beam pad, passes ground load to miniature stake through the beam pad on, and guarantees prefabricated apron does not take place the displacement under great impact force.
Further: the prefabricated apron of polylith that sets up side by side is including fixed prefabricated apron and movable prefabricated apron, and every interval presets the distance and sets up at least one movable prefabricated apron.
The beneficial effects of the above-mentioned further scheme are: through will fixed prefabricated apron and prefabricated apron of activity set up in turn, and every interval preset distance sets up at least prefabricated apron of activity, can conveniently overhaul like this, improves maintenance efficiency, reduces the maintenance degree of difficulty.
Further: the door structure of the trenchless reinforced current cable duct further comprises a damping rubber seat cushion, wherein the damping rubber seat cushion is arranged between the beam cushion and the movable prefabricated cover plate, and two ends of the movable prefabricated cover plate are respectively placed on the horizontal side edges of the corresponding damping rubber seat cushion.
The beneficial effects of the above-mentioned further scheme are: through setting up shock attenuation rubber cushion can play the effect of buffering shock attenuation on the one hand, avoid the apron is under the effect of external load direct impact beam pad is favorable to guaranteeing the stability of whole portal structure, on the other hand can play the regulation the apron with distance between the beam pad is favorable to guaranteeing the apron is leveled with the road surface.
Further: the height of the notch of the beam cushion is equal to the sum of the thicknesses of the shock-absorbing rubber cushion and the prefabricated cover plate.
The beneficial effects of the above-mentioned further scheme are: by setting the notch height of the beam pad equal to the sum of the thicknesses of the shock-absorbing rubber seat pad and the prefabricated cover plate, the plate can be ensured to be leveled with the road surface, thereby ensuring the passing safety of vehicles and pedestrians.
Further: the fixed prefabricated cover plate and the beam cushion are leveled by adopting concrete and fixedly connected, and the damping rubber cushion is fixed at two ends of the lower surface of the movable prefabricated cover plate through bolts.
The beneficial effects of the above-mentioned further scheme are: through will fixed prefabricated apron with adopt concrete leveling and fixed connection between the roof beam pad, on the one hand guarantee fixed prefabricated apron is leveled with the road surface, on the other hand guarantees fixed prefabricated apron with the fastness of being connected between the roof beam pad, the shock attenuation rubber seat cushion passes through the bolt fastening in the lower surface both ends of prefabricated apron of activity, can guarantee like this that the position of shock attenuation rubber seat cushion is fixed relatively, avoids the load that forms when vehicle and pedestrian pass through to cause the positional deviation of shock attenuation rubber seat cushion.
Further: and plastic foam is filled between the upper end of the side wall of the current cable trench and the lower surface of the prefabricated cover plate.
The beneficial effects of the above-mentioned further scheme are: through will fill plastic foam between the lateral wall upper end of current situation cable pit with the lower surface of prefabricated apron can so make prefabricated apron with keep apart between the lateral wall of current situation cable pit, vertical load can not pass to on the current situation cable pit, and the level is born through miniature stake to soil and water load, has guaranteed the safety of current situation cable pit.
Drawings
FIG. 1 is a schematic structural view of a gate structure of a trenchless reinforced current cable pit according to an embodiment of the utility model;
fig. 2 is a plan view of a portal structure of a trenchless reinforced current raceway in accordance with one embodiment of the utility model.
In the drawings, the list of components represented by the various numbers is as follows:
100. current cable trench 200, mini pile body 300, beam pad 400, prefabricated cover plate;
11. the current cable trench side wall, 12, the current cable trench bottom plate;
41. rubber shock absorbing seat cushion 42, plastic foam.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
As shown in fig. 1, a gate structure of a trenchless reinforced current cable duct is applied to a current cable duct 100 and comprises a plurality of micro piles 200 and a plurality of prefabricated cover plates 400, wherein the micro piles 200 are divided into two rows and respectively arranged outside the side walls of two opposite sides of the current cable duct 100 along the length direction of the current cable duct 100, beam pads 300 are arranged at the tops of the micro piles 200, the beam pads 300 at two sides are oppositely arranged, the prefabricated cover plates 400 for transmitting and bearing vehicle loads are arranged between the beam pads 300 at two sides, two ends of the prefabricated cover plates 400 are respectively positioned on the beam pads 300 at two sides, and the plurality of prefabricated cover plates 400 are arranged side by side along the length direction of the current cable duct 100.
According to the portal structure of the trenchless reinforced current cable pit, the current cable pit 100 is drilled on two sides and the micro piles 200 are arranged in rows to bear vertical ground load and horizontal water and soil pressure, so that the current pipeline is prevented from being influenced by heavy excavation, the pile ends of the micro piles enter a bearing layer, the settlement is smaller compared with the conventional reinforcement method, the safety of the current cable pit 100 is ensured, the loads are borne by the top plate of the portal structure and the micro pile bodies on two sides, the current cable pit side wall 11 and the current cable pit bottom plate 12 are ensured not to bear stress, the structure is simple, the construction is easy, and the normal use of a cable is not influenced.
In the embodiment of the present utility model, the construction method of the micro pile 200 is as follows: and (3) forming holes by adopting a small-sized engineering driller, wherein the diameter of the holes is 400mm, the length of the holes is the current ground elevation to the pile bottom elevation, grading broken stone with the grain size of 2-4 cm is filled in the holes, the mud content is not more than 3%, then, the pile body is formed by adopting pressure grouting, the diameter of the piles is 400mm, and the spacing is 500mm. In order to avoid damage to the current cable trench due to construction errors, the clearance between the micropile 200 and the side wall of the current cable trench 100 is 200mm.
In practice, the pile body of the micro pile 200 adopts a secondary post grouting technology. The slurry is pure cement slurry, the cement ratio is 0.5, the first grouting pressure is not lower than 4MPa, and the second grouting pressure is preferably 2-4MPa. And (3) performing secondary grouting when the slurry of the primary grouting is initially set.
In one or more embodiments of the present utility model, the beam pad 300 has an L shape, and both sides of the beam pad 300 face the horizontal direction and the vertical direction, respectively, and both ends of the prefabricated cover 400 are located on the horizontal sides of the beam pad 300. By arranging the L-shaped beam pad 300, the horizontal side edge of the beam pad 300 and the micro pile 200 can form a whole, and on the other hand, the prefabricated cover plate 400 can be conveniently placed on the horizontal side edge of the beam pad 300, ground load is transferred to the micro pile 200 through the beam pad 300, the pile body side-resisting rigidity is increased, and the prefabricated cover plate 400 is ensured not to displace under larger impact force.
Alternatively, in one or more embodiments of the present utility model, the plurality of prefabricated cover panels 400 disposed side by side include a fixed prefabricated cover panel and a movable prefabricated cover panel, and at least one movable prefabricated cover panel is disposed at each preset distance. Through will fixed prefabricated apron and prefabricated apron of activity set up in turn, and every interval preset distance sets up at least prefabricated apron of activity, can conveniently overhaul like this, improves maintenance efficiency, reduces the maintenance degree of difficulty.
In the embodiment of the utility model, the prefabricated cover plate 400 is placed on the L-shaped beam pad 300, the prefabricated cover plate 400 is 500mm wide and twice longer than the net span, two movable prefabricated cover plates are arranged at intervals of about 10m for convenient maintenance, the thickness of the cover plates and the reinforcing bars are calculated according to the load and the span, and the calculation formula is referred as follows:
M＝1/8*q*l 2
V＝1/2*q*l
wherein q is the load applied to the cover plate, and l is 1.05 x the net span.
In this embodiment, the prefabricated deck plate 400 is rested on the L-shaped beam pad 300 with a rest length of 250mm on each side.
Optionally, in one or more embodiments of the present utility model, the gate structure of the trenchless reinforced current trench further includes a cushion rubber pad 41, wherein the cushion rubber pad 41 is disposed between the beam pad 300 and the movable prefabricated cover plate, and two ends of the movable prefabricated cover plate are respectively placed on horizontal sides of the cushion rubber pad 41. Through setting up shock attenuation rubber cushion 41, on the one hand can play buffering shock attenuation's effect, avoid prefabricated apron 400 under the effect of external load direct impact beam pad 300 is favorable to guaranteeing the stability of whole portal structure, on the other hand can play the regulation prefabricated apron 400 with distance between the beam pad 300 is favorable to guaranteeing prefabricated apron 400 is leveled with the road surface.
In one or more embodiments of the present utility model, the gap height of the beam pad 300 is equal to the sum of the thicknesses of the cushion rubber 41 and the pre-made cover 400. By setting the notch height of the beam pad 300 to be equal to the sum of the thicknesses of the cushion rubber 41 and the prefabricated cover plate 400, it is possible to ensure that the plate 400 is flush with the road surface, thereby ensuring the safety of passing vehicles and pedestrians. Here, the total height of the beam pad 300 is 400 mm+the height of the gap, the total width of the L-shaped beam pad 300 should be wider than each side of the diameter of the micro pile by not less than 50mm, the total width should be 500mm, the width of the gap of the L-shaped beam pad 300 is the total width minus the rest length of the prefabricated cover plate 400 by 250mm and the reserved gap by 10mm, so the width of the gap is 240mm, the part of the L-shaped beam pad 300 below the current ground needs to be excavated and cast-in-place, and the pile top of the micro pile 200 should extend into the L-shaped beam pad 300 by about 50mm.
In one or more embodiments of the present utility model, the fixed prefabricated cover plate and the beam pad 300 are leveled and fixedly connected by using C15 fine stone concrete with a thickness of 41mm, and the shock absorbing rubber pads 41 are fixed to both ends of the lower surface of the movable prefabricated cover plate by bolts. Through will fixed prefabricated apron with adopt concrete leveling and fixed connection between the roof beam pad 300, on the one hand guarantee fixed prefabricated apron is leveled with the road surface, on the other hand guarantee fixed prefabricated apron with the fastness of being connected between the roof beam pad 300, the cushion rubber seat 41 passes through the bolt fastening in the lower surface both ends of prefabricated apron of activity, can guarantee like this that the position of cushion rubber seat 41 is relatively fixed, avoids the load that forms when vehicle and pedestrian pass through to cause the skew of cushion rubber seat 41.
In the embodiment of the utility model, the cushion rubber 41 has a thickness of 41mm, and adopts
100, a movable prefabricated cover plate is provided with four shock absorption rubber seat cushions 41, the length and the width of the shock absorption rubber seat cushions 41 are 200mm, and the elevation of the top of all prefabricated cover plates 400 is consistent. Two rubber shock absorbing seat cushions 41 are arranged on each side under each movable prefabricated cover plate.
In the embodiment of the present utility model, the beam pad 300 and the prefabricated cover 400 are both in a C30 reinforced concrete structure.
Optionally, in one or more embodiments of the present utility model, a plastic foam 42 is filled between the upper end of the sidewall of the present raceway 100 and the lower surface of the prefabricated cover plate 400. Through will pack plastic foam 42 between the lateral wall upper end of current cable trench 100 with the lower surface of prefabricated apron 400 can make like this prefabricated apron 400 with keep apart between the lateral wall of current cable trench 100, vertical load can not pass to the current cable trench on, and the level is born through miniature stake to soil and water load, has guaranteed the safety of current cable trench 100.
Before installing the prefabricated cover plate 400 with the portal structure, the current cable trench cover plate should be removed, the current cable trench bottom plate 12 and the current cable trench side wall 11 should be kept, and the upper end of the side wall of the current cable trench is chiseled off, so that the top elevation of the current cable trench side wall 11 is ensured to be lower than the bottom elevation of the prefabricated cover plate 400 by not less than 50mm, and the top of the current cable trench side wall 11 and the prefabricated cover plate 400 are filled with plastic foam 42.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. The utility model provides a gate structure of current cable pit is consolidated to non-excavation, is applied to current cable pit (100), its characterized in that: including many miniature stake (200) and polylith prefabricated apron (400), many miniature stake (200) divide into two rows respectively along the length direction of current situation cable pit (100) set up in the opposite both sides lateral wall outside of current situation cable pit (100), the top of miniature stake (200) is provided with beam pad (300), and both sides beam pad (300) set up relatively, and both sides be provided with between beam pad (300) be used for transmitting and bear the weight of vehicle prefabricated apron (400), just the both ends of prefabricated apron (400) are located both sides respectively beam pad (300) are last, and the polylith prefabricated apron (400) are followed the length direction of current situation cable pit (100) sets up side by side.
2. A trenchless reinforced existing cable pit door structure as defined in claim 1 wherein: the beam pad (300) is L-shaped, two side edges of the beam pad (300) face the horizontal direction and the vertical direction respectively, and two ends of the prefabricated cover plate (400) are located on the horizontal side edges of the beam pad (300) on two sides respectively.
3. A trenchless reinforced existing cable pit door structure as defined in claim 1 wherein: the prefabricated cover plates (400) comprise fixed prefabricated cover plates and movable prefabricated cover plates, and at least one movable prefabricated cover plate is arranged at preset distances.
4. A trenchless reinforced existing cable pit door structure as defined in claim 3 wherein: still include shock attenuation rubber seat pad (41), shock attenuation rubber seat pad (41) set up in beam pad (300) with between the prefabricated apron of activity, just the both ends of prefabricated apron of activity are placed respectively in the correspondence shock attenuation rubber seat pad (41) horizontal side edge.
5. A trenchless reinforced existing cable pit door structure as defined in claim 4 wherein: the gap height of the beam pad (300) is equal to the sum of the thicknesses of the shock absorbing rubber seat pad (41) and the prefabricated cover plate (400).
6. A trenchless reinforced existing cable pit door structure as defined in claim 4 wherein: the fixed prefabricated cover plate and the beam cushion (300) are leveled by adopting concrete and fixedly connected, and the damping rubber cushion (41) is fixed at two ends of the lower surface of the movable prefabricated cover plate through bolts.
7. A gate structure of a trenchless reinforced existing raceway as set forth in any one of claims 1-6 wherein: a plastic foam (42) is filled between the upper end of the side wall of the current cable trench (100) and the lower surface of the prefabricated cover plate (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223425287.1U CN219018369U (en) | 2022-12-15 | 2022-12-15 | Door type structure of current cable trench is consolidated in non-excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223425287.1U CN219018369U (en) | 2022-12-15 | 2022-12-15 | Door type structure of current cable trench is consolidated in non-excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219018369U true CN219018369U (en) | 2023-05-12 |
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ID=86246638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223425287.1U Active CN219018369U (en) | 2022-12-15 | 2022-12-15 | Door type structure of current cable trench is consolidated in non-excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219018369U (en) |
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2022
- 2022-12-15 CN CN202223425287.1U patent/CN219018369U/en active Active
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