Draining structure for construction of foundation pit separated by cast-in-place pile

Abstract

The application discloses a water drainage structure for foundation pit construction of bored pile partition, water ring ditches are arranged by means of partitioned piles of the foundation pit, and the corners of the partitioned foundation pit are structurally reinforced by means of the inclined support beams, in addition, the bottom sealing plates between the corners of the support beams and the inclined support beams are utilized to form water storage spaces, on the one hand, the structure of the partitioned foundation pit is reinforced, and water can be concentrated and stored for unified treatment, subsequent treatment can be excluded, and the stored water can be utilized for dust reduction and other constructions of the construction site, so that full utilization of resources is realized, the engineering construction cost is reduced, the construction of the foundation pit partition constructed first is ensured to be smoothly conducted, and the engineering construction efficiency is improved. The application solves the problem of poor plugging effect of the traditional plugging method when dealing with seepage water between bored piles of the partitioned foundation pit.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more specifically to a drainage structure for foundation pit construction with cast-in-place piles. Background Technology

[0002] In the construction of some large-area foundation pits, construction is sometimes carried out in multiple areas, and each area is further divided into multiple stages. When construction is carried out in multiple stages, adjacent areas are separated by rows of cast-in-place piles. When the first stage of the foundation pit is in the earthwork excavation stage and the second stage of the foundation pit has not yet been constructed, soil water in the second stage foundation pit can seep into the first stage foundation pit through the gaps in the cast-in-place piles, which is detrimental to the earthwork excavation, foundation slab and structural construction of the first stage foundation pit.

[0003] When dealing with seepage between piles in cast-in-place piles, quick-drying cement and compaction grouting are generally used to seal the seepage points. However, these methods are not very effective at sealing the leaks.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, a drainage structure for foundation pit construction with cast-in-place piles is provided to solve the problem that traditional sealing methods are ineffective in dealing with seepage between cast-in-place pile rows in foundation pits with cast-in-place piles.

[0006] To achieve the above objectives, a drainage structure for foundation pit construction with cast-in-place piles is provided, comprising:

[0007] Dividing piles are embedded in the foundation pit, which is divided into multiple foundation pit sections by the dividing piles. The dividing piles are arranged in a circle along the circumferential direction of the foundation pit sections. The dividing piles have an inner side facing the foundation pit section that is constructed first and an outer side facing away from the foundation pit section that is constructed first.

[0008] A support beam is cast inside the dividing piles. The support beam is arranged in a ring around the perimeter of the previously constructed foundation pit section. A water-receiving ring groove is cast on the upper part of the support beam to receive water seeping from the vertical gaps of the dividing piles. The water-receiving ring groove is arranged along the length of the support beam and is attached to the inner side of the dividing piles.

[0009] The inclined support beam is arranged at the corner of the first-constructed foundation pit partition, is supported on the opposite two side walls at the corner of the support beam, the bottom of the inclined support beam is connected with the bottom of the support beam with a bottom sealing plate, the bottom sealing plate and the inclined support beam and the support beam form a water storage space, and the water receiving ring ditch is communicated with the water storage space.

[0010] Further, the water receiving ring ditch comprises two side plates arranged in the same direction, and the side plates are vertically arranged on the support beam, and one side plate is attached to the inner side of the partition pile row.

[0011] Further, the side plate is a prefabricated plate.

[0012] Further, the inner side of the water receiving ring ditch is paved with a waterproof layer.

[0013] Further, the bottom of the support beam is flush with the bottom of the inclined support beam.

[0014] Further, a water guide pipe is arranged at the corner of the support beam, one end of the water guide pipe is communicated with the water receiving ring ditch, and the other end of the water guide pipe is communicated with the water storage space.

[0015] The beneficial effects of the present application are that the water drainage structure for the foundation pit construction of the bored pile partition in the present application sets the water receiving ring ditch by means of the partition pile row of the foundation pit, and the corner of the foundation pit partition is structurally reinforced by the inclined support beam at the corner of the foundation pit partition, in addition, the bottom sealing plate between the corner of the support beam and the inclined support beam is used to form a water storage space, on the one hand, the structure of the foundation pit partition is reinforced, and water can also be concentrated for unified treatment, subsequent treatment can be excluded, and the water can also be used for dust reduction and other construction of the construction site, realizing full utilization of resources, reducing the engineering construction cost, ensuring the smooth construction of the first-constructed foundation pit partition, and improving the engineering construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0017] Figure 1 It is a layout diagram of the foundation pit partition of the embodiment of the present application.

[0018] Figure 2 It is a structural diagram of the water drainage structure for the foundation pit construction of the bored pile partition of the embodiment of the present application.

[0019] Figure 3 It is Figure 2 It is a local enlarged view of the middle C.

[0020] Figure 4A structure diagram of a water collecting ring groove of an embodiment of the present application.

[0021] Figure 5 A structure diagram of a water storage space of an embodiment of the present application.

[0022] Figure 6 A water seepage direction diagram of a partition pile row of an embodiment of the present application. DETAILED DESCRIPTION

[0023] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and are not a limitation on the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0025] REFERENCE Figures 1 to 6 As shown in the drawings, the present application provides a water drainage structure for foundation pit construction of bored pile partition, comprising: a partition pile row 1, a support beam 2, and an inclined bracing beam 3.

[0026] As shown in the drawings, the present application provides a water drainage structure for foundation pit construction of bored pile partition, comprising: a partition pile row 1, a support beam 2, and an inclined bracing beam 3. Figure 1 In the present embodiment, the partition pile row 1 is embedded in the foundation pit A. The inside of the foundation pit is partitioned into multiple foundation pit sub-zones a by the partition pile row 1. Specifically, it is divided into six foundation pit sub-zones. The outer edge of the foundation pit is also embedded with a partition pile row. The partition pile row is a bored pile. The partition pile row 1 is arranged in a circle along the circumferential direction of the foundation pit sub-zone a. The partition pile row 1 has an inner side facing the first-constructed foundation pit sub-zone a and an outer side facing away from the first-constructed foundation pit sub-zone a.

[0027] The contour line of each foundation pit sub-zone is embedded with a partition pile row. As shown in the drawings, Figure 2 The specific structure of one foundation pit sub-zone in the lower left corner of Figure 1 is the first-constructed foundation pit sub-zone among the multiple foundation pit sub-zones.

[0028] The support beam 2 is cast on the inner side of the partition pile row 1. The support beam 2 is arranged in a circle along the circumference of the first-constructed foundation pit sub-zone a. The upper part of the support beam 2 is cast with a water collecting ring groove 21. The water collecting ring groove 21 is used to collect water seepage in the vertical gap 10 of the partition pile row 1. The water collecting ring groove 21 is arranged along the length direction of the support beam 2. The water collecting ring groove 21 is arranged in a circle along the length direction of the support beam in a ring shape. The water collecting ring groove 21 is attached to the inner side of the partition pile row 1.

[0029] In the embodiment, the soil excavation of the foundation pit is carried out in layers, and the excavation is carried out layer by layer. When the upper soil of the foundation pit is excavated, the supporting beam is arranged at the upper part of the partition pile row; when the lower soil of the foundation pit is excavated, the supporting beam is arranged at the middle part of the partition pile row.

[0030] The inclined bracing beam 3 is arranged at the corner of the foundation pit subarea a which is constructed first. The inclined bracing beam 3 is supported on the opposite two side walls at the corner of the supporting beam 2. The bottom of the inclined bracing beam 3 is connected with the bottom of the supporting beam 2 through the bottom sealing plate 31. The bottom sealing plate 31, the inclined bracing beam 3 and the supporting beam 2 form the water storage space B. The water receiving ring ditch 21 is communicated with the water storage space B.

[0031] Referring to Figure 4 and Figure 6 Since the water receiving ring ditch is arranged at the excavation side of the foundation pit subarea, the seepage water in the unexcavated foundation pit subarea can seep into the water receiving ring ditch through the vertical gap of the partition pile row. Among them, Figure 6 The thick line arrow represents the seepage direction of the seepage water. In combination with Figure 5 It is shown that the water receiving ring ditch is arranged above the water storage space, and the seepage water collected in the water receiving ring ditch can be introduced into the water storage space. The seepage water in the unexcavated foundation pit subarea can be prevented from flowing into the foundation pit subarea which is constructed first by only timely removing the water storage space concentrated at the corner of the foundation pit subarea, and the subsequent construction in the foundation pit subarea which is constructed first can be avoided.

[0032] Compared with the traditional method of blocking seepage water, the water drainage structure for the foundation pit construction of the partitioned cast-in-place pile in the application arranges the water receiving ring ditch through the partition pile row of the foundation pit, and strengthens the structure at the corner of the foundation pit subarea through the inclined bracing beam at the corner of the foundation pit subarea which is constructed first. In addition, the bottom sealing plate between the corner of the supporting beam and the inclined bracing beam is used to form the water storage space. On the one hand, the structure of the foundation pit subarea is strengthened, and the water can be concentrated and stored for unified treatment. The subsequent treatment can be removed, or the water storage can be used for dust reduction and other constructions in the construction site, so that the resources are fully utilized, the construction cost is reduced, the construction of the foundation pit subarea which is constructed first is ensured to be carried out smoothly, and the construction efficiency is improved.

[0033] As a preferred embodiment, the supporting beam is a concrete beam, which not only reinforces the overall bearing capacity of the partition pile row, but also serves as the base of the water receiving ring ditch.

[0034] Specifically, the water receiving ring ditch 21 includes two side plates 211. The two side plates 211 are arranged in the same direction, that is, the two side plates 211 are arranged oppositely. The side plates 211 are vertically arranged on the supporting beam 2. One side plate 211 is attached to the inner side of the partition pile row 1. The two side plates and the top surface of the supporting beam form a containing space for receiving seepage water.

[0035] In the embodiment, the side plates 211 are prefabricated plates. The inner side of the water collecting groove 21 is paved with a waterproof layer 22. Preferably, the waterproof layer is paved on the top surface of the support beam, and the opposite sides of the waterproof layer are paved on the opposite sides of the side plates along the plate surface direction.

[0036] With reference to the drawings Figure 5 As shown, the height of the support beam is adapted to the height of the inclined support beam. The bottom of the support beam 2 is flush with the bottom of the inclined support beam 3. The water seeped in the water collecting groove is input into the water storage space through the water guide pipe.

[0037] The corner of the support beam 2 is provided with a water guide pipe. One end of the water guide pipe is communicated with the water collecting groove 21. The other end of the water guide pipe is communicated with the water storage space B.

[0038] The above description is merely preferred embodiments of the present application and the technical principles applied. It should be understood by those skilled in the art that the inventive scope involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A drainage structure for foundation pit construction with cast-in-place piles, characterized in that, include: Dividing piles are embedded in the foundation pit, which is divided into multiple foundation pit sections by the dividing piles. The dividing piles are arranged in a circle along the circumferential direction of the foundation pit sections. The dividing piles have an inner side facing the foundation pit section that is constructed first and an outer side facing away from the foundation pit section that is constructed first. A support beam is cast inside the dividing piles. The support beam is arranged in a ring around the perimeter of the previously constructed foundation pit section. A water-receiving ring groove is cast on the upper part of the support beam to receive water seeping from the vertical gaps of the dividing piles. The water-receiving ring groove is arranged along the length of the support beam and is attached to the inner side of the dividing piles. A diagonal bracing beam is installed at the corner of the first constructed foundation pit section. The diagonal bracing beam is supported by the opposite two side walls at the corner of the supporting beam. The bottom of the diagonal bracing beam is connected to the bottom of the supporting beam by a bottom sealing plate. The bottom sealing plate, the diagonal bracing beam, and the supporting beam enclose a water storage space. The water receiving ring ditch is connected to the water storage space.

2. The drainage structure for foundation pit construction with cast-in-place pile separation according to claim 1, characterized in that, The water-receiving ring ditch includes two side plates arranged in the same direction. The side plates are erected vertically on the supporting beam, and one side plate is attached to the inner side of the dividing pile.

3. The drainage structure for foundation pit construction with cast-in-place pile separation according to claim 2, characterized in that, The side panel is a precast panel.

4. The drainage structure for foundation pit construction with cast-in-place pile separation according to claim 1, characterized in that, A waterproof layer is laid on the inner side of the water-receiving ring trench.

5. The drainage structure for foundation pit construction with cast-in-place pile separation according to claim 1, characterized in that, The bottom of the supporting beam is flush with the bottom of the diagonal brace beam.

6. The drainage structure for foundation pit construction with cast-in-place pile separation according to claim 1, characterized in that, A water guide pipe is provided at the corner of the supporting beam. One end of the water guide pipe is connected to the water receiving ring ditch, and the other end of the water guide pipe is connected to the water storage space.

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