CN104060602A - Dismountable soft foundation load-heaped precompression reinforcement device and setting method thereof - Google Patents
Dismountable soft foundation load-heaped precompression reinforcement device and setting method thereof Download PDFInfo
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- CN104060602A CN104060602A CN201410295278.6A CN201410295278A CN104060602A CN 104060602 A CN104060602 A CN 104060602A CN 201410295278 A CN201410295278 A CN 201410295278A CN 104060602 A CN104060602 A CN 104060602A
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Abstract
The invention discloses a dismountable soft foundation load-heaped precompression reinforcement device and a setting method thereof. The dismountable soft foundation load-heaped precompression reinforcement device comprises a steel pipe support, a water bag, a protection layer, a base plate, side guard plates and hooks, wherein the water bag is hooked in the steel pipe support through hanging holes in binding areas and the hooks located on the steel pipe support and matched with the hanging holes; a water inlet and an exhaust vent are formed in the upper part of the water bag; a water outlet is formed in the lower part of the water bag; the size of the water bag filled with water is bigger than that of the steel pipe support; the protection layer wraps the water bag, is arranged in the steel pipe support, and clings to the steel pipe support; the difference value between the height of the water level after the water bag is filled with the water and the height of each side guard plate is smaller than 3m. The dismountable soft foundation load-heaped precompression reinforcement device has the advantages that the overall stability is higher; not only can the consumption of natural materials, such as soil and dinas, be reduced, the test cost be reduced and the workload be reduced but also the operation is simple, the load adjustability is strong, the environmental pollution is reduced, and the application range is wider.
Description
Technical field
The invention belongs to highway construction field in civil engineering, relate in particular to a kind of assemble type soft foundation charge preloading consolidation device and method to set up thereof.
Background technology
Piling prepressing also claims preloading drainage consolidation method, is one of a kind of method of reinforcing soft ground, precompressed and the two kinds of modes of surcharge preloading of carrying such as is divided into.Its mechanism is exactly by top, place load application, and the pore water in the soil body is discharged along band drain, fixed gradually, ground generation sedimentation, and intensity progressively improves simultaneously.Existing piling prepressing technology is generally soil, sand material etc. to be filled to thing nearby evenly to place on soft base as piling prepressing load, completes piling prepressing process.This method need to consume a large amount of materials such as soil, sandstone, and cost is high, complicated operation, workload is large, and in material starvation areas such as some sandstones, piling prepressing is subject to materials limitations, piling prepressing scheme is often difficult to carry out, and has to change other technologies scheme, causes engineering cost to increase.In recent years, have in the industry scholar to propose to adopt water pocket to replace soil and sandstone material as prefabricating load, be mainly divided into column and horizontal two kinds of forms, it is limited that horizontal water pocket loads height of water level, is difficult to meet the needs of the special soft base of part to larger load.Meanwhile, because water pocket is cylindric, in water pocket, water is circular-arc distribution, causes load skewness; Between column water pocket group various piece, be connected by knot that can be undone by a pull band, although this load mode can ensure the needs of Special Roadbed to larger load, but easily run-off the straight in water filling and loading procedure, be difficult to ensure the resistance to overturning of water pocket, and because water pocket bottom pressure is larger, there is no local reinforcement measure, easily there is spalling in water pocket, has certain risk.
Chinese patent CN2644514Y discloses a kind of soft foundation charger, comprises the water pocket made from flexible waterproof material, and each water pocket top is equipped with opening, and also having the each water pocket of several bandings is the upright knot that can be undone by a pull band of water pocket.Although this device can solve the needs of soft foundation to larger prefabricating load; but because water pocket does not have supporting and safeguard measure around; easily run-off the straight in loading procedure; and water pocket bottom is directly placed on soft foundation; cause the skewness of load; simultaneously due to water pocket bottom, to bear larger hydraulic pressure strong, there is no local reinforcement measure, and water pocket material exists the risk of breaking.
Summary of the invention
Object of the present invention is exactly in order to address the above problem, and a kind of assemble type soft foundation charge preloading consolidation device and method to set up thereof are provided, and this device has good stability, load is evenly distributed, intensity is high, and convenient disassembly can provide the feature of larger vertical load.
To achieve these goals, the present invention adopts following technical scheme:
A kind of assemble type soft foundation charge preloading consolidation device, comprise steel pipe support, water pocket, topping, backing plate, side backplate, hook, described backing plate is arranged on steel pipe support bottom, backing plate is construction formwork, plate thickness >=3cm, water pocket hangs over steel pipe support inside by the hook coordinating with it on the hanging hole on it and steel pipe support, water pocket top arranges inlet opening and steam vent, bottom sets out water hole, weep hole diameter is 4～7cm, inlet opening diameter is 9～11cm, water pocket fills the volume that volume after water is greater than steel pipe support, water pocket outer wrap topping, prevent from use destroying because friction causes water pocket, the size of topping and inner water pocket consistent, side backplate thickness 4～7cm, be arranged on steel pipe support inside, be close to steel pipe support, water pocket fills height of water level after water and the difference of side backplate height is less than 3m, backplate top, side arranges one deck rubber fender, fix on backplate with iron nail, side backplate is construction formwork.
Described steel pipe support is buckled and is formed by connecting by steel pipe by steel pipe, and bottom is 2m × 2m or 1m × 2m, and the distance of the two horizontal steel pipes in side is not more than 0.5m, on the rib of four vertical directions of steel pipe support, every 0.5m, hook is set from bottom to top.
Described water pocket divides water barrier and topping; inner side is water barrier; material is geomembrane; outside is topping; material is geotextiles; two films bond respectively in 12 positions corresponding to rib of steel pipe support, bond length >=10cm, and position corresponding with hook on steel pipe support in bonded areas arranges hanging hole.
The method to set up of described bracing means, comprises the following steps:
(1) leveling region, place, at precompressed region pad plate;
(2) steel pipe support is set, determines the height of steel pipe support according to the prefabricating load of design;
(3) place side backplate, backplate top arranges one deck rubber fender;
(4) place water pocket, bottom is paved, and surrounding is first connected with bottom hook, is connected from bottom to up successively with hook;
(5) by water inlet to water pocket water filling, in the injecting process, keep the closure of the unimpeded and weep hole of steam vent;
(6) inlet opening and steam vent are closed in water filling after completing, and carry out piling prepressing.Because squeeze time is longer, should make regular check on water sac sealing situation, prevent from causing and loading unsuccessfully because leaking.
Described topping is canvas material, and topping all wraps up inner water pocket.
Inlet opening and weep hole carry out local reinforcement measure, and inlet opening and weep hole position are provided with the rigid plastics of screw thread, in geomembrane inner side, prevent infiltration and pressure is excessive damages with high strength plastics glue.Inlet opening place arranges inlet opening capping, and weep hole place sets out water hole switch.
Backing plate covers whole weak soils and loads region.In order to prevent rupture failure, load is evenly distributed, the leveling of the backing plate bottom soil body.In use procedure, lay one deck backing plate.
For preventing that side backplate is toppled over before water filling, between backplate, embedded squeezing is arranged, the effect of backplate is for preventing that the spalling that causes bottom water pocket because upper pressure is excessive from destroying, for economic rationality, reduce workload, the comparable height of water level of backplate height is low, and backplate top should arrange one deck rubber fender, prevents the destruction of backplate corner angle to water pocket.
The effect of hook is in the injecting process, to hang up water pocket, and guarantee water filling is carried out smoothly, and after filling water, ensures that water pocket all directions are stressed evenly.
Beneficial effect of the present invention:
(1), compared with the weight loading technique such as bracing means of the present invention and existing utilization soil, sandstone, not only can reduce the consumption of the natural materials such as soil, sandstone, reduce experimentation cost, reduce workload, and simple to operate, load controllability is strong, reduces environment pollution.In material starvation areas such as some sandstones, piling prepressing is subject to materials limitations, utilizes soil, sandstone piling prepressing scheme to be often difficult to carry out, and bracing means of the present invention is not subject to this condition restriction, and the scope of application is wider.
(2), bracing means of the present invention compares with existing water pocket charger, outsidely supported by steel pipe support, can solving horizontal water pocket, to load height of water level limited, is difficult to meet the problem of the needs of the special soft base of part to larger load.Meanwhile, topping is set in side and bottom arranges backing plate, can ensure that hydraulic pressure load is evenly distributed on the weak soil of precompressed region.Owing to there being the support action of steel pipe support, resistance to overturning is higher, can also solve the problem of column water pocket easy run-off the straight in water filling and loading procedure.
(3), water pocket outer wrap of the present invention has canvas material, can prevent the wearing and tearing to inner water pocket in test and unloading process, and can avoid the spalling destruction of water pocket; Bottom and side arrange backing plate protection, not only can ensure being uniformly distributed of water ballast(ing), and can play the effect of the inner water pocket of protection.
(4), this charger is assemblied to form by single bracing means, between each bracing means, linked and connect by steel pipe, resistance to overturning is good, convenient disassembly, be convenient to mobile, flexibility is high.
Brief description of the drawings
Fig. 1 is charger cell cube schematic diagram;
Fig. 2 is water pocket schematical top view;
Fig. 3 is water pocket bonding schematic diagram;
Fig. 4 is inlet opening capping;
Fig. 5 is weep hole switch;
Wherein: 1, steel pipe support, 2, water pocket, 3, hook, 4, side backplate, 5, backing plate, 6, weep hole, 7, steam vent, 8, inlet opening, 9, hanging hole, 10, bonded areas, 11, inlet opening capping, 12, weep hole switch.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Fig. 1～5, a kind of assemble type soft foundation charge preloading consolidation device, comprise steel pipe support 1, water pocket 2, backing plate 5, side backplate 4, hanging hole 9, described backing plate 5 is arranged on steel pipe support 1 bottom, backing plate 5 thickness >=3cm, backing plate 5 is construction formwork, water pocket 2 hangs over steel pipe support 1 inside by the hook 3 coordinating with it on the hanging hole 9 on it and steel pipe support 1, the effect of hanging hole 9 is in the injecting process, to hang up water pocket 2, guarantee water filling is carried out smoothly, and after filling water, ensure that water pocket 2 all directions are stressed evenly, water pocket 2 tops arrange inlet opening 8 and steam vent 7, bottom sets out water hole 6, weep hole 6 diameters are 4～7cm, inlet opening 8 diameters are 9～11cm, water pocket 2 fills the volume that volume after water is greater than steel pipe support 1, water pocket 2 outer wrap toppings, prevent from use destroying because friction causes water pocket 2, the size of described topping is consistent with inner water pocket 2, topping is canvas material, topping all wraps up inner water pocket 2, side backplate 4 thickness 4～7cm, be arranged on steel pipe support 1 inside, be close to steel pipe support 1, water pocket 2 fills height of water level after water and is less than 3m with side backplate 4 difference highly, backplate 4 tops in side arrange one deck rubber fender, fix on backplate 4 with iron nail, side backplate 4 is construction formwork.
Method to set up, according to on-the-spot piling prepressing region shape, area etc., appropriate design is distributed prepressing device position and quantity:
The first step: tentatively flatten region, place, make nothing compared with hollow place groove and projection, without relatively large shape rock and native gravel, at precompressed region pad plate 5, backing plate 5 should cover whole precompressed region, in order to prevent rupture failure, load is evenly distributed, backing plate 5 bottom soil body levelings;
Second step: install steel pipe support 1, steel pipe support 1 is buckled and is formed by connecting by steel pipe by steel pipe, the bottom size of each loading unit steel pipe support 1 is 2m × 2m or 1m × 2m, the distance of the two horizontal steel pipes in side is not more than 0.5m, on the rib of four vertical directions of steel pipe support 1, every 0.5m, hook 3 is set from bottom to top, the height of steel pipe support 1 is determined according to the prefabricating load of design, and should exceed height of water level 0.5m, if precompressed height of water level is below 5m, can suitably increase bottom size, row's steel pipe support 1 is set between adjacent loading unit;
The 3rd step: place side backplate 4, for preventing that side backplate 4 is toppled over before water filling, between side backplate 4, answer embedded squeezing to arrange, the effect of backplate 4 is for preventing that the spalling that causes bottom water pocket 2 because upper pressure is excessive from destroying, for economic rationality, reduce workload, the highly comparable height of water level of backplate 4 is low, and backplate 4 tops should arrange one deck rubber fender, prevents the destruction of backplate 4 corner angle to water pocket 2, the comparable height of water level of side backplate 4 is low, and the difference of height of water level and backplate 4 height should be less than 3m.Backplate 4 tops arrange one deck rubber fender, prevent the destruction of backplate corner angle to water pocket 2;
The 4th step: place water pocket 2, 2 points of water barriers of described water pocket and topping, inner side is water barrier, material is geomembrane, outside is topping, material is geotextiles, two films bond respectively in 12 positions corresponding to rib of steel pipe support 1, bond length >=10cm, position corresponding with hook 3 on steel pipe support 1 in bonded areas 10 arranges hanging hole 9, volume after water pocket 2 is poured water should be greater than the volume of steel pipe support Unit 1, bottom should be paved, surrounding is first connected with bottom hook 3, be connected with hook 3 respectively from bottom to up successively, water pocket 2 lower switches should be stretched out side backplate 4 by side backplate 4 holes,
The 5th step: inlet opening 8 and weep hole 6 carry out local reinforcement measure, inlet opening 8 and weep hole 6 positions are provided with the rigid plastics of screw thread, with high strength plastics glue in geomembrane inner side, prevent infiltration and pressure is excessive damages, 8 places, inlet opening arrange inlet opening capping 11, weep hole 6 places set out water hole switch 12, to water pocket 2 water fillings, should keep the unimpeded and closed weep hole switch 12 of steam vent 7 by water inlet 8 in the injecting process.
The 6th step: close inlet opening 8 and steam vent 7 by inlet opening capping 11 after water filling completes, carry out piling prepressing, because squeeze time is longer, should make regular check on water pocket 2 sealing situations, prevent from causing and loading unsuccessfully because leaking.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection scope of the present invention.
Claims (5)
1. an assemble type soft foundation charge preloading consolidation device, it is characterized in that, comprise steel pipe support, water pocket, topping, backing plate, side backplate, hook, described backing plate is arranged on steel pipe support bottom, plate thickness >=3cm, water pocket hangs over steel pipe support inside by the hook coordinating with it on the hanging hole on it and steel pipe support, water pocket top arranges inlet opening and steam vent, bottom sets out water hole, weep hole diameter is 4～7cm, inlet opening diameter is 9～11cm, water pocket fills the volume that volume after water is greater than steel pipe support, water pocket outer wrap topping, the size of described topping and inner water pocket consistent, side backplate thickness 4～7cm, be arranged on steel pipe support inside, be close to steel pipe support, water pocket fills the difference of height of water level and side backplate height after water and is less than 3m.
2. bracing means as claimed in claim 1, it is characterized in that, described steel pipe support is buckled and is formed by connecting by steel pipe by steel pipe, bottom is 2m × 2m or 1m × 2m, the distance of the two horizontal steel pipes in side is not more than 0.5m, on the rib of four vertical directions of steel pipe support, every 0.5m, hook is set from bottom to top.
3. bracing means as claimed in claim 1; it is characterized in that; described water pocket divides water barrier and topping; inner side is water barrier, and material is geomembrane, and outside is topping; material is geotextiles; two films bond respectively in 12 positions corresponding to rib of steel pipe support, bond length >=10cm, and position corresponding with hook on steel pipe support in bonded areas arranges hanging hole.
4. bracing means as claimed in claim 1, is characterized in that, backplate top, described side arranges one deck rubber fender.
5. the method to set up of the bracing means as described in as arbitrary in claim 1～4, is characterized in that, comprises the following steps:
(1) leveling region, place, at precompressed region pad plate;
(2) steel pipe support is set, determines the height of steel pipe support according to the prefabricating load of design;
(3) place side backplate, backplate top arranges one deck rubber fender;
(4) place water pocket, bottom is paved, and surrounding is first connected with bottom hook, is connected from bottom to up successively with hook;
(5) by water inlet to water pocket water filling, in the injecting process, keep the closure of the unimpeded and weep hole of steam vent;
(6) inlet opening and steam vent are closed in water filling after completing, and carry out piling prepressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410295278.6A CN104060602B (en) | 2014-06-26 | 2014-06-26 | A kind of assemble type soft foundation charge preloading consolidation device and method to set up thereof |
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| CN201410295278.6A CN104060602B (en) | 2014-06-26 | 2014-06-26 | A kind of assemble type soft foundation charge preloading consolidation device and method to set up thereof |
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| CN104060602A true CN104060602A (en) | 2014-09-24 |
| CN104060602B CN104060602B (en) | 2016-03-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040022673A (en) * | 2002-09-09 | 2004-03-16 | 임준호 | Dehydration construction using water-load and drainage |
| CN101016734A (en) * | 2006-02-06 | 2007-08-15 | 中交上海航道勘察设计研究院有限公司 | Back pressure curing method for soft soil filling bag diking |
| CN101259905A (en) * | 2008-04-10 | 2008-09-10 | 陈江涛 | Load-carrying water bag and use thereof |
| CN102127908A (en) * | 2011-04-18 | 2011-07-20 | 中交四航工程研究院有限公司 | Method for quickly reinforcing ultra-soft soil foundation by using bagged sand cushion |
| CN203639896U (en) * | 2013-10-25 | 2014-06-11 | 江苏苏龙环保科技有限公司 | Inward pull type closed prepressing water bag |
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2014
- 2014-06-26 CN CN201410295278.6A patent/CN104060602B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040022673A (en) * | 2002-09-09 | 2004-03-16 | 임준호 | Dehydration construction using water-load and drainage |
| CN101016734A (en) * | 2006-02-06 | 2007-08-15 | 中交上海航道勘察设计研究院有限公司 | Back pressure curing method for soft soil filling bag diking |
| CN101259905A (en) * | 2008-04-10 | 2008-09-10 | 陈江涛 | Load-carrying water bag and use thereof |
| CN102127908A (en) * | 2011-04-18 | 2011-07-20 | 中交四航工程研究院有限公司 | Method for quickly reinforcing ultra-soft soil foundation by using bagged sand cushion |
| CN203639896U (en) * | 2013-10-25 | 2014-06-11 | 江苏苏龙环保科技有限公司 | Inward pull type closed prepressing water bag |
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| CN104060602B (en) | 2016-03-30 |
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Granted publication date: 20160330 Termination date: 20170626 |