CN206800418U - A kind of buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters - Google Patents
A kind of buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters Download PDFInfo
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- CN206800418U CN206800418U CN201720414897.1U CN201720414897U CN206800418U CN 206800418 U CN206800418 U CN 206800418U CN 201720414897 U CN201720414897 U CN 201720414897U CN 206800418 U CN206800418 U CN 206800418U
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- soil
- piping lane
- floodwaters
- pipe gallery
- load
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Abstract
The utility model discloses a kind of buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters, piping lane including being embedded to stratum, the trapezoidal silt soil strata in piping lane crown center region backfill section, backfill calculous soil layer in other regions at the top of piping lane, by backfilling the high soil body of compressibility in piping lane crown center region, soil arch unloading effect can be formed at the top of piping lane, so that midspan load principal direction of stress deflects to both sides, vertical stress reduces, midspan load and moment of flexure are efficiently reduced, so as to reduce structural concrete thickness degree and amount of reinforcement.By forming soil arch unloading effect, be advantageous to play the mechanical property of structural strengthening angle and side wall concrete, and compress side wall crack, can equally mitigate side wall construction thickness and amount of reinforcement, extend the service life of side wall.
Description
Technical field
Municipal underground pipeline lane field of engineering technology is the utility model is related to, more particularly to a kind of buried canal case and synthesis of drainning off floodwaters
Piping lane soil arch load-relieving structure.
Background technology
As urban construction is outwards expanded by riverfront region of no relief, and the large-scale popularization application of pipe gallery, in recent years, in room
In real estate and urban construction, there is increasing high roadbed phenomenon, drain off floodwaters canal case and pipe gallery positioned at high roadbed area
Continue to bring out.Because earthing is the just successively landfill after structure roof cast at the top of drain off floodwaters canal case or pipe gallery, structural top
Load accordingly increases sharply as the depth of fill rises, and in the middle part of top plate and end moment of flexure is very big.Therefore, existing processing mode
It is the conventional measure for increasing Laminate construction thickness and increasing arrangement of reinforcement, to ensure structure safety, and controls concrete surface crack width,
The endurance quality of extending structure, but the cost for increasing Laminate construction thickness and arrangement of reinforcement is often very high, and constrain structure across
Spend and use space.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of stabilized structure, the buried canal that drains off floodwaters of service life length
Case and pipe gallery soil arch load-relieving structure.
Technical scheme used by solve above-mentioned technical problem：A kind of buried canal case and pipe gallery soil arch off-load of drainning off floodwaters
Structure, include the piping lane on embedment stratum, the trapezoidal silt soil strata in the piping lane crown center region backfill section, the pipe
Backfill calculous soil layer in other regions at the top of corridor.
Further, the bottom width of the silt soil strata is 1/2 span.
Further, piping lane top sides angle forms structural strengthening angle.
Beneficial effect：This buried drain off floodwaters canal case and pipe gallery soil arch load-relieving structure, by piping lane crown center region
The high soil body of compressibility is backfilled, can form soil at the top of piping lane and encircle unloading effect so that midspan load principal direction of stress is to two
Lateral deviation turns, and vertical stress reduces, and midspan load and moment of flexure is efficiently reduced, so as to reduce structural concrete thickness degree and reinforcing bar
Dosage.Moreover, while span centre vertical load is reduced, by soil arching effect, midspan load is transferred to both ends, increases both ends
Compression, be advantageous to play the mechanical property of structural strengthening angle and side wall concrete, and compress side wall crack, can equally subtract
Light side wall construction thickness and amount of reinforcement, extend the service life of side wall.
Brief description of the drawings
The utility model is described further with reference to the accompanying drawings and examples；
Fig. 1 is the cross-sectional view of the utility model embodiment underground pipe gallery structure；
Fig. 2 is the force analysis schematic diagram of the utility model embodiment underground pipe gallery structure.
Embodiment
Referring to Figures 1 and 2, the utility model a kind of buried drain off floodwaters canal case and pipe gallery soil arch load-relieving structure, including bury
Enter the piping lane 10 on stratum, the trapezoidal silt soil strata 20 in the crown center region of piping lane 10 backfill section, the silt soil strata 20
Width be piping lane 10 1/2 span, other regions of the top of piping lane 20 backfill calculous soil layer 30.
Preferably, piping lane top sides angle forms structural strengthening angle.
It is above-mentioned it is buried drain off floodwaters canal case and pipe gallery soil arch load-relieving structure formed by following steps：
S1, using muck soil, calculous soil as backfill the soil body, muck soil is dried to reduce moisture content.Its
In, Muddy Bottoms soil's water content needs accurate control, and water content is too high, in liquid-plastic state, it is impossible to shapes, it is difficult to control backfill into
Trapezoidal shape, and too high water content, can also cause the excessive of later stage decrement.Therefore after muck soil exploitation, need to be by suitable
When drying, water content is reduced, by the muck soil of liquid-plastic state；
S2, to piping lane crown center region the trapezoidal muck soil in section is successively backfilled, backfilled in muck soil both sides
Calculous soil；Wherein, by mono- layer of 200mm, the muck soil of centre is first successively filled out, then backfills the calculous soil of both sides, compaction in layers, directly
Formed to the top of the muck soil of backfill top；
S3, mono- layer of 300mm is pressed again, successively uniformly backfill calculous soil, and compaction in layers.Wherein, with the calculous soil on top
Successively backfill, trapezoidal silt soil strata is compacted, and primary compression consolidate, native arch into, structural top span centre formed unload
Lotus is encircleed；But because water penetration is very poor, in muck soil the drainage procedure of moisture still in lasting progress, it is necessary to by several weeks,
Even time several months, completion discharging consolidation that could more thoroughly.During the discharging consolidation of muck soil, muck soil volume
Further compression, soil arching effect are able to consolidate, strengthened.
By backfilling the of a relatively high muck soil of compressibility in the middle part of piping lane top plate, can be formed in the middle part of piping lane top plate
Soil arch unloading effect, muck soil in the middle part of piping lane top plate occur more with the increase of backfill load, the opposite sides soil body
More compression, piping lane top plate span centre soil body load principal direction of stress are gradually deflected, so as to reduce top plate by vertical to both sides
Middle part vertical pressure and moment of flexure, although being increased across end load, because opposed end distance reduces, the moment of flexure of end has also subtracted
It is small, and increased pressure against the ends, after being concentrated by structural strengthening angle and piping lane sidewall paneling, piping lane bottom end is delivered to,
The resistance to compression for further having played piping lane sidewall paneling and strengthens angle concrete is had more than needed, equivalent to the confined pressure for adding end construction,
It is advantageous for the stress safety and Crack Control durability of structure.
Relative to traditional underground pipe gallery, the utility model buried drain off floodwaters canal case and pipe gallery soil arch load-relieving structure, tying
In the case that structure thickness and arrangement of reinforcement are equivalent, the safety stock of structure can be considerably increased, reduces concrete surface Fracture Width,
Extend structural life-time；Under the conditions of identical safety coefficient and control of crack width, then Laminate construction thickness and steel can be obviously reduced
Muscle usage amount, civil engineering cost is saved from face.
Embodiment of the present utility model is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to
Embodiment is stated, in the technical field those of ordinary skill possessed knowledge, this practicality can also not departed from
Various changes can be made on the premise of new objective.
Claims (3)
- A kind of 1. buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters, it is characterised in that：Piping lane including being embedded to stratum, institute The trapezoidal silt soil strata in piping lane crown center region backfill section is stated, other regions backfill calculous soil at the top of the piping lane Layer.
- 2. buried canal case and the pipe gallery soil arch load-relieving structure of drainning off floodwaters according to claim 1, it is characterised in that：The silt The bottom width of shale soil layer is 1/2 span.
- 3. buried canal case and the pipe gallery soil arch load-relieving structure of drainning off floodwaters according to claim 1 or 2, it is characterised in that：Institute State piping lane top sides angle and form structural strengthening angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720414897.1U CN206800418U (en) | 2017-04-19 | 2017-04-19 | A kind of buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720414897.1U CN206800418U (en) | 2017-04-19 | 2017-04-19 | A kind of buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206800418U true CN206800418U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720414897.1U Active CN206800418U (en) | 2017-04-19 | 2017-04-19 | A kind of buried canal case and pipe gallery soil arch load-relieving structure of drainning off floodwaters |
Country Status (1)
| Country | Link |
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| CN (1) | CN206800418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119697A (en) * | 2017-04-19 | 2017-09-01 | 广州市市政工程设计研究总院 | A kind of buried canal case and pipe gallery soil arch load-relieving structure and its construction method of drainning off floodwaters |
-
2017
- 2017-04-19 CN CN201720414897.1U patent/CN206800418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119697A (en) * | 2017-04-19 | 2017-09-01 | 广州市市政工程设计研究总院 | A kind of buried canal case and pipe gallery soil arch load-relieving structure and its construction method of drainning off floodwaters |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Patentee after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060 East staircase, Municipal Services Building, 348 East Ring Road, Guangzhou, Guangdong Patentee before: Guangzhou City Engineering Design studies total institute |
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| CP03 | Change of name, title or address |