CN210031758U - A surcharge and carry pre-compaction structure for soft soil highway section construction - Google Patents
A surcharge and carry pre-compaction structure for soft soil highway section construction Download PDFInfo
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- CN210031758U CN210031758U CN201920697116.3U CN201920697116U CN210031758U CN 210031758 U CN210031758 U CN 210031758U CN 201920697116 U CN201920697116 U CN 201920697116U CN 210031758 U CN210031758 U CN 210031758U
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Abstract
The utility model discloses a pile carries pre-compaction structure for soft soil highway section construction, pile carries pre-compaction structure and locates the ground surface in soft soil highway section, pile carries pre-compaction structure and presets the regional bagged materials pile of culvert including being located the soft soil highway section and carries the section to and locate the bagged materials pile and carry the section and pile the section along the filling of soft soil highway section length direction both sides. The utility model discloses change conventional heap and carry pre-compaction mode, treat to predetermine the ground under the regional bottom of culvert and reach and subside the standard after, remove the bagged object in the culvert pre-compaction district, can carry out the culvert construction. The problem of materials required by the preloading of the culvert channel in shortage of soil resources can be solved, the filled roadbed can be guaranteed not to be damaged during unloading, and the construction progress is accelerated.
Description
Technical Field
The utility model relates to a road construction technical field especially relates to a surcharge and carry pre-compaction structure for soft soil highway section construction.
Background
At present, for culvert channels of soft soil road sections, filling and surcharge preloading is mostly adopted on site, manual work is used for assisting a digging machine to reversely dig earthwork to unload earthwork after the settlement standard is reached, the process is complex when the earthwork is unloaded, a compacted and formed roadbed is easy to damage, and much inconvenience is caused for road sections with short soil resources.
In addition, the culvert channel built in the soft soil section by the traditional method is easy to crack due to uneven settlement of the foundation, or the culvert channel cannot be connected with the existing water system or road in the using period due to excessive settlement, the subsequent repair or repair work of the culvert channel is very troublesome, the culvert channel is usually constructed again after the foundation is processed again after being excavated to the basement of the culvert channel, the traffic is interrupted, huge loss is caused to economic benefit, adverse social influence is caused, and the culvert channel is collapsed and slipped even in a local section, so that great potential safety hazard is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a construction of being convenient for, and can not destroy the road bed, improve construction quality's a surcharge year pre-compaction structure that is used for soft soil highway section construction.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a surcharge and carry pre-compaction structure for soft soil highway section construction, the foundation surface on soft soil highway section is located to surcharge and carry pre-compaction structure, surcharge and carry the pre-compaction structure and include the bagged materials surcharge and carry the section that is located soft soil highway section preset culvert region to and locate the bagged materials surcharge and carry the section along the fill surcharge of soft soil highway section length direction both sides and carry the section.
The utility model discloses change conventional heap and carry pre-compaction mode, treat to predetermine the ground under the regional bottom of culvert and reach and subside the standard after, remove the bagged object in the culvert pre-compaction district, can carry out the culvert construction. The problem of materials required by the preloading of the culvert channel in shortage of soil resources can be solved, the filled roadbed can be guaranteed not to be damaged during unloading, and the construction progress is accelerated.
As a further improvement of the above technical solution:
two side surfaces of the preset culvert area along the length direction of the soft soil road section are inclined outwards to form slope surfaces, the slope ratio of the slope surfaces is 1: m, wherein m = (H x 1.5+1.5 xSp-1.5S 1)/H is the designed filling height, S is the designed final settlement, Sp = (1/3-2/3) S, and S1= (2/3-4/5) S.
The slope ratio refers to the ratio of the vertical height and the horizontal width of the slope.
The bagged object stacking section is formed by stacking more than two bagged object layers in the vertical direction.
The bagged material layer is formed by a plurality of bagged materials which are periodically arranged.
The bagged materials are sand bags or soil bags.
Compared with the prior art, the utility model has the advantages of:
the problem of materials required by the preloading of the culvert channel in shortage of soil resources can be solved, the filled roadbed can be guaranteed not to be damaged during unloading, and the construction progress is accelerated.
Drawings
Fig. 1 is a schematic view of a preloading structure according to an embodiment of the present invention.
Figure 2 is the culvert section structure sketch map after the embodiment of the utility model discloses a completion.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
Example 1:
as shown in fig. 1, the preloading structure for soft soil section construction of this embodiment is located on the surface of the foundation of the soft soil section, and includes a bagged material loading section 1 located in a preset culvert area of the soft soil section, and a soil filling loading section 2 located on both sides of the bagged material loading section along the length direction of the soft soil section.
Two side surfaces 3 of the preset culvert area along the length direction of the soft soil road section are inclined outwards to form a slope, and the slope of the slope is (please supplement).
In this embodiment, the bagged material stacking section 1 is formed by stacking more than two bagged material layers in the vertical direction, the bagged material layers are formed by periodically arranging a plurality of bagged materials, and the bagged materials are sand bags.
Adopt the construction of the preloading structure of surcharge of this embodiment to carry out soft soil highway section, include the following step:
s1: dividing the region above the soft soil road section foundation into a culvert prepressing area in the middle and roadbed prepressing areas on two sides of the culvert prepressing area along the length direction of the soft soil road section; the intersecting surface of the culvert pre-pressing area and the roadbed pre-pressing area inclines towards the roadbed pre-pressing area, the slope ratio is 1: m, m = (H multiplied by 1.5+1.5 multiplied by Sp-1.5S 1)/H, wherein H is the designed filling height, S is the designed final settlement (calculated one by one), Sp is generally (1/3-2/3) S, and S1 is generally (2/3-4/5) S.
S2: loading the filling soil in a roadbed preloading area, and loading the sand bags in a culvert preloading area;
s3: removing the sand bag in the culvert prepressing area after the foundation under the culvert prepressing area reaches the settlement standard;
s4: carrying out culvert construction in the culvert prepressing area, and the concrete process is as follows: constructing a culvert foundation cushion layer, constructing a culvert channel main body structure, and finally backfilling a culvert back, wherein the backfilling needs to adopt a material with good water permeability, and is assisted by small machinery and manual compaction, and the backfilling is carried out until the culvert back surface is flush with the soil filled surface of the roadbed pre-pressing area to form the roadbed surface.
S5: and constructing a pavement structure layer on the upper surface of the roadbed.
Many culvert channels are built on a soft foundation section of the highway from the middle mountain to the open level, and the soil resources of part of the sections are poor in property and are in short supply. The conventional filling preloading construction is not suitable for the road section with a short soil source, and the compacted and formed roadbed is easy to damage during later unloading, so that the engineering quality and the construction period are greatly influenced. The method of the embodiment is adopted to carry out construction on a soft foundation section of the highway from the middle mountain to the flat highway.
For the land section that the soil resources are scarce, can adopt the sand bag to pile and carry, make the construction organization before the construction, the sand bag can be organized the design ration preparation according to the construction, can reuse, economic environmental protection, construction convenience. As shown in figure 1, a culvert loading preloading area is reserved when the roadbed at two sides is filled in advance, and the slope ratio (1: m) of the culvert loading preloading area is obtained through settlement calculation. After the two-side roadbed is constructed, the sand-piling bag is loaded in a mode of manually matching with an excavator. The soil filling on the two sides of the culvert and the prepressing of the middle sand bag are not less than 3 months, after the settlement standard is met, the sand bag is unloaded, the manual cooperation of a digging machine can be also adopted, and the filled roadbed is not affected during unloading. As shown in fig. 2, after unloading, constructing a culvert channel base cushion layer, constructing a culvert channel main body structure, and finally carrying out culvert back backfilling, wherein the backfilling needs to adopt a material with good water permeability and is assisted by small machinery and manual compaction.
Through the utility model discloses mainly solve following problem: 1) the problem of material piling in the area with short soil source is solved by adopting a sand bag piling mode; 2) the filling form of the roadbed at two sides can be not influenced as far as possible by manually matching the mechanical stacking and unloading sand bags, the construction quality of the roadbed is ensured, and 3) the construction progress is accelerated at the same time, and the construction cost is saved.
The utility model has the advantages of the construction is swift, convenient, economic environmental protection, progress comprehensive treatment is effectual, has better spreading value.
The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.
Claims (5)
1. The utility model provides a surcharge and carry pre-compaction structure for soft soil highway section construction, its characterized in that, the foundation surface on soft soil highway section is located to surcharge and carry pre-compaction structure, surcharge and carry pre-compaction structure and carry section (1) including being located soft soil highway section and predetermine the bagged materials of culvert region to and locate that bagged materials surcharge and carry section along the fill of soft soil highway section length direction both sides and pile and carry section (2).
2. The preloading structure for soft soil section construction according to claim 1, wherein both side surfaces (3) of the predetermined culvert area along the length direction of the soft soil section are inclined outwards to form slope surfaces, the slope ratio of the slope surfaces is 1: m, wherein m = (H x 1.5+1.5 × Sp-1.5S 1)/H is the design fill height, S is the design final settlement, Sp = (1/3-2/3) S, S1= (2/3-4/5) S.
3. The preloading structure for soft soil section construction according to claim 1 or 2, wherein the bagged material loading section (1) is formed by loading more than two bagged material layers in vertical direction.
4. The surcharge preloading structure for soft soil section construction according to claim 3, wherein the pocket layers are formed by periodically arranging a plurality of pockets.
5. The surcharge preloading structure for soft soil segment construction according to claim 4, wherein the bagged material is a sand bag or a soil bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920697116.3U CN210031758U (en) | 2019-05-15 | 2019-05-15 | A surcharge and carry pre-compaction structure for soft soil highway section construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920697116.3U CN210031758U (en) | 2019-05-15 | 2019-05-15 | A surcharge and carry pre-compaction structure for soft soil highway section construction |
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| CN210031758U true CN210031758U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086472A (en) * | 2021-10-27 | 2022-02-25 | 中铁第四勘察设计院集团有限公司 | Construction method for controlling post-construction settlement of frame bridge |
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2019
- 2019-05-15 CN CN201920697116.3U patent/CN210031758U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086472A (en) * | 2021-10-27 | 2022-02-25 | 中铁第四勘察设计院集团有限公司 | Construction method for controlling post-construction settlement of frame bridge |
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