CN204690767U - A New Water Collection Sleeve and Water Supply and Drainage Device for Deep Foundation Pit - Google Patents

Abstract

The utility model discloses a novel water collecting sleeve for deep basal pit, including steel casing pipe, steel bar grating and filter screen, steel bar grating locates the lower extreme of steel casing pipe and welded connection as an organic whole, and steel bar grating's surface parcel one deck is close mesh filter screen. The utility model also discloses a plumbing device, the steel casing pipe on novel water collecting sleeve's upper portion is arranged in the structure concrete, and the steel bar grating of novel water collecting sleeve's lower part is arranged in the basement below the structure bottom plate, is equipped with the drainage tube around the basement, and the suction pump is arranged in novel water collecting sleeve. Compared with the prior art, the utility model has the following advantages: the utility model discloses a novel water collecting sleeve pipe and water supply and drainage device for deep basal pit avoids the structure to reserve the hole, has improved structure waterproof and construction quality greatly, has shortened time limit for a project and cost.

Description

A New Water Collection Sleeve and Water Supply and Drainage Device for Deep Foundation Pit

technical field

The utility model relates to a foundation pit drainage device, in particular to a novel water collecting sleeve and a water supply and drainage device for deep foundation pits.

Background technique

In the prior art, for strata with high groundwater level, rich bedrock fissure water, and poor precipitation effect, the construction method of laying brick wells and placing submersible pumps for drainage of foundation pits is usually used. This form not only has low work efficiency, but also must reserve a post-pouring belt at the location of the brick water collection well, and then seal it after the concrete is poured in the later stage. Since there is always water, the plugging is very difficult, and the quality of the plugging cannot be effectively guaranteed. , In the later stage, the structure is prone to water leakage, and the submersible pump is stuck in the steel bar and cannot be lifted up, resulting in waste.

The foundation pit of Chengdu Metro Line 7, Standard 6, Liulichang Station in my country is 336m long and 17m deep. The geological conditions are mainly sandy pebbles and moderate (strong) weathered mudstone. The ground surface goes down about 13m into the mudstone layer. The fissure water is abundant, and the precipitation wells outside the pit cannot completely reduce the water flow in the foundation pit, especially at the interface between mudstone and sand and pebbles. The precipitation cannot form a funnel effect. sewage work. The foundation pit of Liulichang Station is divided into 20 excavations. If the collection and drainage wells are arranged according to the traditional method, it will not be able to meet the waterproof quality requirements of the site, the efficiency will be low, and the construction period and cost will be affected.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and provide a new type of water collection sleeve and water supply and drainage device for deep foundation pits, which avoids holes reserved in the structure, greatly improves the waterproof structure and construction quality, and shortens the construction time. duration and cost.

The utility model is realized through the following technical solutions: a new type of water-collecting casing for deep foundation pits, including a steel casing, a steel bar grid and a filter screen, and the steel bar grid is arranged on the steel casing The lower end is welded and connected as a whole, and the outer surface of the steel bar grid is wrapped with a filter net.

As a further optimization of the above scheme, the inner diameter of the steel casing is 500 mm, and the length of the steel casing is 80 cm.

As a further optimization of the above solution, the steel bar grid is formed by welding a plurality of steel bars with a diameter of 25 mm and a length of 1 m along the circumferential direction of the steel casing.

As a further optimization of the above solution, the spacing of the steel bars is 10cm.

As a further optimization of the above scheme, a water-stop steel ring is provided in the middle of the outer surface of the steel casing.

The utility model also discloses a water supply and drainage device for deep foundation pits, which includes a novel water collecting casing.

As a further optimization of the above scheme, the foundation pit includes a base and a concrete layer, the new water collecting sleeve is placed in the foundation pit, the steel casing on the upper part of the new water collecting sleeve is located in the structural concrete, and the new water collecting sleeve is placed in the structural concrete. The steel grid at the lower part of the water casing is located in the base below the structural floor, and there are multiple drainage pipes around the base, and the water pump is placed in the new water collection casing

As a further optimization of the above solution, the upper end of the new water collection sleeve is provided with a steel plate cover with a thickness of 2 cm.

As a further optimization of the above solution, two through holes with a diameter of 5 cm are provided on the steel plate upper cover.

Compared with the prior art, the utility model has the following advantages: the beneficial effects of the novel water-collecting casing and water supply and drainage device for deep foundation pits provided by the utility model are reflected in:

1. The water supply and drainage device of the utility model saves time compared with the construction of the traditional brick water collection well, and the new water collection casing is equipped with a filter device, which effectively separates the sediment in the foundation pit water, prolongs the life of the water pump, and protects the construction environment.

2. Using the water supply and drainage device of the present utility model, there is no need to reserve post-pouring belts on the structural bottom plate, one-time pouring is formed, and the later grouting is sealed to ensure the structural construction and waterproof quality. At the same time, the water pump can be lifted out or replaced at any time, saving costs.

3. The new water-collecting sleeve of the utility model has simple structure and good use effect, which can greatly reduce the cost, ensure the quality of the project, and ensure the construction period.

Description of drawings

Fig. 1 is a structural schematic diagram of a novel water-collecting casing for deep foundation pits of the present invention.

Fig. 2 is a structural schematic diagram of a water supply and drainage device of the present invention.

Detailed ways

The following is a detailed description of the embodiments of the present utility model. This embodiment is implemented on the premise of the technical solution of the present utility model, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present utility model is not limited to the following the described embodiment.

Referring to FIG. 1 , it is a structural schematic diagram of a new water-collecting casing for deep foundation pits of the present invention. A new type of water collection casing for deep foundation pits, including a steel casing 2, a steel grid 3 and a filter screen 5, the steel grid 3 is set at the lower end of the steel casing 2 and the steel casing 2 is welded and connected as a whole , the outer surface of the reinforcement grid 3 is wrapped with a filter screen 5 . The steel casing 2 is a watertight steel casing.

The utility model relates to a novel water-collecting casing for deep foundation pits. The inner diameter of the steel casing 2 is a steel casing of 500mm, and the length of the steel casing 2 is 80cm. The reinforcement grid 3 is surrounded by many steel bars with a diameter of 25mm and a length of 1m, and the spacing of the steel bars is 10cm.

The utility model also discloses a water supply and drainage device based on the novel water collecting casing for deep foundation pits.

Referring to FIG. 2 , it is a structural schematic diagram of a water supply and drainage device of the present invention. Place the new water collection casing in the pre-dug water collection foundation pit, which includes the base and the concrete layer. Among them, the upper steel casing 2 of the new water collection casing is located in the structural concrete, and the steel grid 3 at the lower part of the new water collection casing is located in the base below the structural floor, with a depth of about 1m. The net 5 is wrapped, and filter stones are filled in the periphery, which can ensure the normal pumping of the water-collecting sleeve of the present utility model under the concrete pouring situation, and avoid reserving a post-pouring belt. A plurality of drainage pipes 1 are arranged around the base, and the drainage pipes 1 drain water into the new-type water collecting casing. The water pump 7 is placed in the new water-collecting casing, and the submersible pump in the water-collecting casing pumps water outwards to reach the base anhydrous condition and ensure the normal pouring of structural concrete. A water-stop steel ring 4 is provided in the middle of the outer surface of the steel casing. A water-stop steel ring 4 is welded on the periphery of the steel casing 2 to prevent leakage of the steel casing 2 caused by the shrinkage of the concrete in the later stage.

The utility model is based on a water supply and drainage device for a new type of water collecting casing used in deep foundation pits. The upper end of the new type of water collecting casing is provided with a steel plate upper cover 6 with a thickness of 2 cm. The top of casing 2. The steel plate upper cover 6 is provided with two through holes 61 with a diameter of 5 cm. By grouting in the through hole 61 reserved on the steel plate upper cover 6, the waterproof effect is further achieved and the construction quality is ensured.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. for a Novel water collection sleeve pipe for deep foundation ditch, it is characterized in that: comprise steel sleeve, reinforcing bar grid and screen pack, the lower end being welded to connect that described reinforcing bar grid is located at described steel sleeve is integrated, and the external surface of described reinforcing bar grid wraps up one deck screen pack; The internal diameter of described steel sleeve is the steel sleeve of 500mm, and the length of described steel sleeve is 80cm.

2. a kind of Novel water collection sleeve pipe for deep foundation ditch according to claim 1, is characterized in that: described reinforcing bar grid by many diameters be 25mm, length is the reinforcing bar of 1m, enclose along described steel sleeve bottom part ring to welding one and form.

3. a kind of Novel water collection sleeve pipe for deep foundation ditch according to claim 2, is characterized in that: the spacing of described reinforcing bar is 10cm.

4. a kind of Novel water collection sleeve pipe for deep foundation ditch according to claim 1, is characterized in that: the middle part of the external surface of described steel sleeve is provided with a sealing steel loop.

5. for a water feeding and draining device for deep foundation ditch, it is characterized in that: comprise the arbitrary described Novel water collection sleeve pipe of claim 1-4.

6. a kind of water feeding and draining device for deep foundation ditch according to claim 5, foundation ditch comprises substrate and layer of concrete, described Novel water collection sleeve pipe is placed in foundation ditch, it is characterized in that: the steel sleeve on the top of described Novel water collection sleeve pipe is arranged in structural concrete, the reinforcing bar grid of the bottom of described Novel water collection sleeve pipe is arranged in the substrate of below structure base slab, the surrounding of substrate is provided with multiple drainage tube, and suction pump is placed in described Novel water collection sleeve pipe.

7. a kind of water feeding and draining device for deep foundation ditch according to claim 5, is characterized in that: the upper end of described Novel water collection sleeve pipe is provided with the steel plate upper cover that a thickness is 2cm.

8. a kind of water feeding and draining device for deep foundation ditch according to claim 7, is characterized in that: described steel plate covering and is provided with two diameters is the through hole of 5cm.