CN205348150U - A well point dewatering jointly piles and carries pre -compaction reinforcing apparatus for road bed - Google Patents

A well point dewatering jointly piles and carries pre -compaction reinforcing apparatus for road bed Download PDF

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Publication number
CN205348150U
CN205348150U CN201620143341.9U CN201620143341U CN205348150U CN 205348150 U CN205348150 U CN 205348150U CN 201620143341 U CN201620143341 U CN 201620143341U CN 205348150 U CN205348150 U CN 205348150U
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China
Prior art keywords
water
well
storage device
water storage
roadbed
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Withdrawn - After Issue
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CN201620143341.9U
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Chinese (zh)
Inventor
姚占勇
张正超
张创
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Shandong University
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Shandong University
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Abstract

The utility model relates to a well point dewatering jointly piles and carries pre -compaction reinforcing apparatus for road bed, reinforcing apparatus includes water storage device, the well casing, house steward and water pump, water storage device arranges the road bed in and treats reinforcing area, a plurality of well casings are laid to settlement position treating the reinforcing area periphery, each well casing and total union coupling, house steward and water storage device's inlet outlet are connected, the water pump draws water from the well casing, it transmits to the water storage device in to pass through house steward with water, water storage device passes through the dead weight of water, treat reinforcing area and pile a year pre -compaction. Use the utility model discloses can the significantly reduce consumption of materials such as grit, soil reduces the engineering volume, and reduce project cost reduces environmental pollution.

Description

Well-points dewatering combined heap load precompacting bracing means for roadbed
Technical field
This utility model belongs to field of road in civil engineering, is specifically related to a kind of well-points dewatering combined heap load precompacting bracing means for roadbed.
Background technology
Along with the fast development of China's economic technology, the basis such as highway, railway Transport Facility Construction scale unprecedentedly strengthens in recent years, but road and rail often to be built on soft soil foundation.The features such as this kind of ground has that water content height, compressibility be big, intensity and low bearing capacity.Therefore, needed bottom deep soft soil is carried out consolidation process before Superstructure Construction.Reinforcement means conventional at present has draining concretion method and compound foundation method, and conventional discharge concretion method includes vacuum preloading, piling prepressing or combined vacuum and surcharge preloading etc..Vacuum preloading and combined vacuum and surcharge preloading are significantly high to sealing requirements, and the difficulty of construction of plastic film mulch is big under water, and cost is high;Composite foundation cost is high;Piling prepressing required heap carrying capacity is big, often to consume the materials such as substantial amounts of soil, sandstone, and cost is high, complicated operation, quantities is big, and in the area of some soil and sandstone scarcity, Chang Yin is limited by material, piling prepressing scheme is difficult to carry out, it has to changes other technologies scheme, causes engineering cost to increase.
Chinese patent CN103031837A discloses a kind of well-points dewatering combined heap load precompacting reinforcing deep soft soil based method, including at the horizontal sand bedding course of surface laying at the construction field (site), plug vertical drainage body, water-stop curtain is set, lay well point, carry out tradition preloading stockpile load construction waiting to reinforce in foundation region.Although this load mode ensure that the ground needs to bigger load, but this preloading mode required heap carrying capacity is big, and cost is high, long construction period.And usually cause construction delay or change arrangement and method for construction because of the scarcity of heap material containing, increase cost.
It is therefore proposed that a kind of efficiency of construction is high, the duration is short, cost is low, be prone to ensure that the soft roadbed treatment technology of construction safety and quality just seems very necessary.
Utility model content
The purpose of this utility model aims to solve the problem that a difficult problem for Reinforcement of Soft Soil Subgrade, thering is provided the well-points dewatering combined heap load precompacting bracing means for roadbed, these apparatus and method can effectively alleviate the soft roadbed treatment technology that heap material containing is in short supply and efficiency of construction is high, construction costs is low.
In order to achieve the above object, this utility model adopts the following technical scheme that
Well-points dewatering combined heap load precompacting bracing means for roadbed, including water storage device, well casing, house steward and water pump, described water storage device is placed in roadbed and treats reinforcing area, wait that some described well casings are laid in the setting position reinforcing area peripheral edge described, each described well casing is connected with described house steward, described house steward is connected with the intake-outlet of described water storage device, described water pump draws water from described well casing, by water by described house steward transmission to described water storage device, to described, the deadweight by water of the described water storage device, treats that reinforcing area carries out piling prepressing.
In the Precipitation Process of general ground, the subsoil water extracted out is not had any utilization, but directly water is evacuated in neighbouring irrigation canals and ditches or river, cause a degree of wasting of resources.And, when weak soil is carried out piling prepressing, generally require the materials such as consumption substantial amounts of soil, sandstone.The application can solve above-mentioned two problems simultaneously, the subsoil water of extraction is turned waste into wealth, substitute traditional heap carrier material and carry out precompressed, decrease relevant operation and the plant equipment of discharging subsoil water in tradition Precipitation Process on the one hand, reduce the quantities of construction period, reduction of erection time, piling prepressing can be carried out on the other hand simultaneously, both add the utilization to the subsoil water extracted, the consolidation settlement of roadbed can have been accelerated again, reduce the engineering time;In addition water storage device can reuse, and saves engineering cost.
Described water storage device is rubber dam bag, water tank or water pocket.
It is provided with plastic protective film for plastics between described rubber dam bag and roadbed;The described steel pipe support being formed around retraining described rubber dam bag treating reinforcing area.
Protecting film is set between roadbed and rubber dam bag, it is possible to protection rubber dam bag is from damage, it is ensured that construction is smoothed out.
Described steel pipe support along roadbed side is provided with vertical side apron.
Described house steward is provided with filter.
Well casing converges at ground location and house steward.The subsoil water directly extracted out, often has more impurity, can produce precipitation in the piling prepressing phase, make the recycling rate of waterused of device reduce, and is not easy cleaning.By arranging filter, it can be ensured that the degree of purity of water in water storage device, it is provided that the recycling rate of waterused of device, and it is easier to cleaning.
For the using method of the well-points dewatering combined heap load precompacting bracing means of roadbed, comprise the following steps:
Step 1: place cleaning, carries out the unwrapping wire location of well point afterwards on described place, buries well casing underground;
Step 2: install house steward, water pump and defecator, described house steward is connected with described well casing;
Step 3: treating that reinforcing area installs water storage device, described water storage device is connected with described house steward;
Step 4: start well-points dewatering, the subsoil water extracted by described well casing injects in described water storage device and carries out preloading construction;
Step 5: after precompressed completes, unloads and removes described bracing means.
In step 1, described place cleaning includes adopting manually or mechanically mode to remove stone riprap, weeds and pollutant, and flattens;The described method burying well casing underground includes jet water spout punching, is sunk to by described well casing after boring, sinks to burying underground with water jetting with well or vibro jetting process.
In step 1, described well point includes light well point, ejector well point, deep well points, electro-osmosis well point and pipe well points.
In step 3, described water storage device is rubber dam bag, before described rubber dam bag is installed, in the described surrounding treating reinforcing area, the steel pipe support in order to retrain described rubber dam bag is installed, the size adjustment according to prefabricating load amount of the height of described steel pipe support, and side apron is placed in the side of described steel pipe support.
In step 5, described unloading is also removed described bracing means and is included unloading described water storage device and remove described well point;
Described unloading water storage device includes adopting water plug to be extracted out by the water in described water storage device, and discharges nearby or be mechanically transported to correct position discharge;
Described dismounting well point refers to and utilizes crane, steel wire rope apparatus, is extracted by described well casing.
The beneficial effects of the utility model are:
1, inject after the underground water filtering that well-points dewatering can be extracted by well-points dewatering combined heap load precompacting system of the present utility model in charge preloading consolidation device and load as the heap material containing base that satisfies the need.Utilize compared with the tradition such as sandstone, soil adds material containing technology with existing, it is possible to greatly reduce the consumption of the material such as sandstone, soil, reduce quantities, reduce construction costs, reduce environmental pollution.The area that some tradition heap material containing such as sandstone, soil is deficient, this utility model is more applicable.
2, this well-points dewatering combined heap load precompacting system is divided into well-points dewatering device, draw water defecator and piling prepressing device.Well-points dewatering device makes level of ground water decline, so that foundation additional stress increases, promotes soft soil roadbed intensity to improve;The subsoil water that well-points dewatering part produces can be extracted out by the defecator that draws water, and injects in piling prepressing device as heap material containing after filtering, is effectively reduced quantities;Piling prepressing device can make the soil body under the incremental effective stress combined effect that preloading and water level decreasing cause, and soft soil roadbed consolidation settlement occurs gradually, and roadbed is able to rapid reinforcement.
When 3, loading, the essence of foundation soil consolidation process is the process that in soil, total stress increases, excess pore water pressure reduces and effective stress increases under load action.Well-points dewatering combined heap load precompacting reinforcing soft ground mainly has two kinds of functions concurrently: precipitating, pre-pressing and piling prepressing.Under both precompressed effects, accelerate soft soil roadbed discharging consolidation.
Accompanying drawing explanation
Fig. 1 is the reinforcing soft soil roadbed generalized section of well-points dewatering combined heap load precompacting
Fig. 2 is the reinforcing soft soil roadbed floor map of well-points dewatering combined heap load precompacting
Wherein, 1-well casing, 2-draws water and defecator, and 3-carries pipe, 4-rubber dam bag, 5-steel pipe support, and house steward 6-, 8-treats stabilization zone.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in detail.
Embodiment 1:
For the well-points dewatering combined heap load precompacting bracing means of roadbed, as it is shown in figure 1, include as the rubber dam bag 4 of water storage device, well casing 1, house steward 6, draw water and defecator 2,
Well casing 1 is drinking-water pipe;House steward 6 is collector pipe, the water of extraction is carried out concentration and collects.
Rubber dam bag 4 is placed in roadbed and treats stabilization zone 8.Some well casings 1 are laid in the setting position treating stabilization zone 8 periphery, each well casing 1 is connected with house steward 6, house steward 6 is connected with the intake-outlet of rubber dam bag by carrying pipe 3, draw water and defecator 2 draws water from well casing 1, and to underground water filtering, water after filtering is transmitted to rubber dam bag by house steward 6, the rubber dam bag deadweight by water, treat stabilization zone 8 and carry out piling prepressing.
Herein draw water and defecator 2 can be one the water pump with filter, it is also possible to be independent water pump and independent filter, can meet draw water and filtering function all within the protection domain of the application.
For the using method of the well-points dewatering combined heap load precompacting bracing means of roadbed, comprise the following steps:
(1) place cleaning;
(2) on the place that step (1) is formed, carry out unwrapping wire location, well point, bury well casing 1 underground, arrange and house steward 6 is installed;
(3) well casing 1 is connected with house steward 6;
(4) installation is drawn water and defecator 2;
(5) treating in stabilization zone 8 installation charge preloading consolidation device;
(6) starting well-points dewatering, carry out preloading construction in the rubber dam bag 4 of subsoil water well-points dewatering extracted injection charge preloading consolidation device, take measures in this process protection well-points dewatering equipment.
(7) starting well-points dewatering, subsoil water well-points dewatering extracted by well casing 1 and house steward 6 is injected in upper rubber dam bag 4 and carries out preloading construction, and take measures in this process protection well-points dewatering equipment.
Site clearing includes adopting manually or mechanically mode to remove stone riprap, weeds and other pollutant, and suitably flattens.
Bury well casing 1 underground and include jet water spout punching, after boring, well casing 1 is sunk to, and sink to burying underground with water jetting with well and vibro jetting process.
Well point includes light well point, ejector well point, deep well points, electro-osmosis well point and pipe well points.
Charge preloading consolidation device includes steel pipe support 5, side apron, rubber dam bag and bottom plastic sheeting protecting film.Its installation process includes cleaning leveling precompressed region, lays plastic sheeting protective layer, installs steel pipe support 5 according to the size of prefabricating load amount, place side apron, places rubber dam bag 4.
Unloading includes adopting water plug to be extracted out by the water in rubber dam bag 4, and discharges nearby or be mechanically transported to correct position discharge.
Well point is removed and is referred to utilize the apparatus such as crane, steel wire rope, is extracted by well casing.
Institute's groundwater abstraction is filtered by this method, and after ensureing that precompressed completes, the water in charge preloading consolidation device is discharged smoothly.
Embodiment 2:
Water storage device can also is that rubber bag with water, metal water tank and combination unit thereof etc..
For metal water tank, then without arranging steel pipe support in its surrounding.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.The multiple amendment of embodiment be will be apparent from for those skilled in the art, generic principles defined herein can when without departing from spirit or scope of the present utility model, realize in other embodiments, the part not being described in detail, for prior art, do not repeat at this.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and feature.

Claims (5)

1. for the well-points dewatering combined heap load precompacting bracing means of roadbed, it is characterized in that: include water storage device, well casing, house steward and water pump, described water storage device is placed in roadbed and treats reinforcing area, wait that some described well casings are laid in the setting position reinforcing area peripheral edge described, each described well casing is connected with described house steward, described house steward is connected with the intake-outlet of described water storage device, described water pump draws water from described well casing, by water by described house steward transmission to described water storage device, to described, the deadweight by water of the described water storage device, treats that reinforcing area carries out piling prepressing.
2. the well-points dewatering combined heap load precompacting bracing means for roadbed according to claim 1, it is characterised in that: described water storage device is rubber dam bag, water tank or water pocket.
3. the well-points dewatering combined heap load precompacting bracing means for roadbed according to claim 2, it is characterised in that: it is provided with plastic protective film for plastics between described rubber dam bag and roadbed;The described steel pipe support being formed around retraining described rubber dam bag treating reinforcing area.
4. the well-points dewatering combined heap load precompacting bracing means for roadbed according to claim 3, it is characterised in that: the described steel pipe support along roadbed side is provided with vertical side apron.
5. according to the arbitrary described well-points dewatering combined heap load precompacting bracing means for roadbed of claim 1-4, it is characterised in that: described house steward is provided with filter.
CN201620143341.9U 2016-02-25 2016-02-25 A well point dewatering jointly piles and carries pre -compaction reinforcing apparatus for road bed Withdrawn - After Issue CN205348150U (en)

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Application Number Priority Date Filing Date Title
CN201620143341.9U CN205348150U (en) 2016-02-25 2016-02-25 A well point dewatering jointly piles and carries pre -compaction reinforcing apparatus for road bed

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105568956A (en) * 2016-02-25 2016-05-11 山东大学 Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105568956A (en) * 2016-02-25 2016-05-11 山东大学 Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device
CN105568956B (en) * 2016-02-25 2018-10-02 山东大学 Well-points dewatering combined heap load precompacting bracing means and its application method for roadbed

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Granted publication date: 20160629

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