Waist rail drainage ditch of side wall of foundation pit

Abstract

The utility model relates to the technical field of foundation pit supporting, in particular to a waist beam drainage ditch of a foundation pit side wall, which comprises a waist beam, a first plate body, a second plate body and a supporting piece, the waist beam is suspended on the outer wall of the support pile; one end face of the first plate body abuts against the outer wall of the supporting pile, and the other end face is connected with the first end of the supporting piece. The bottom end of the first plate body is connected with the waist beam; one end face of the second plate body is connected with the second end of the supporting piece. The bottom end of the second plate body is connected with the waist beam; a drainage ditch is defined by the first plate body, the waist beam and the second plate body. The waist beam drainage ditch is arranged on the outer wall of the supporting pile in a suspended mode, trench excavation, concrete pouring and other operation are not needed, the construction technology of the waist beam drainage ditch is greatly simplified, the construction time is shortened, the conditions of water seepage and water leakage of the side wall of the foundation pit can be dealt with more rapidly, and the water immersion amount of the bottom of the foundation pit is reduced or water immersion of the bottom of the foundation pit is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit support technical field, concretely relates to a waist beam drainage ditch of foundation pit side wall. BACKGROUND

[0002] As a drainage facility, the drainage ditch is widely used in deep foundation pit support engineering due to its simple structure and convenient arrangement. As a horizontal stress component in foundation pit support engineering, the steel waist beam is convenient to construct and can be combined with prestressed anchor and steel support, even concrete support, and is also widely used.

[0003] The existing drainage ditch is generally arranged at the bottom end of the foundation pit side wall, and its process includes tamping the soil layer and laying the cushion after the trench is excavated; setting the steel protection layer in the trench; installing the formwork on both sides of the trench; pouring the concrete, and disassembling the formwork after solidification. Therefore, the construction process of the existing drainage ditch is relatively complicated, and the construction period is relatively long. When the regional underground water level rises, the foundation pit of some constructed foundation pits is prone to seepage and leakage of the foundation pit side wall. Since the construction period of the existing drainage ditch is relatively long, the seepage water is difficult to discharge from the foundation pit in time, which causes the foundation pit groove bottom to be soaked, and it is difficult to achieve the purpose of dry groove operation. Therefore, it is necessary to propose a drainage facility capable of organizing and dredging the seepage water of the foundation pit side wall. UTILITY MODEL CONTENT

[0004] (I) Technical problem to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a waist beam drainage ditch of foundation pit side wall, which solves the technical problem of long construction period of the existing drainage ditch of foundation pit side wall.

[0006] (II) Technical scheme

[0007] In order to achieve the above-mentioned purpose, the waist beam drainage ditch of foundation pit side wall of the utility model comprises a waist beam, a first plate body, a second plate body and a support piece;

[0008] The waist beam is suspended on the outer wall of the support pile; one end surface of the first plate body abuts against the outer wall of the support pile, and the other end surface is connected with the first end of the support piece; the bottom end of the first plate body is connected with the waist beam; one end surface of the second plate body is connected with the second end of the support piece; the bottom end of the second plate body is connected with the waist beam;

[0009] The first plate body, the waist beam and the second plate body enclose a drainage ditch.

[0010] Optionally, the waist beam drainage ditch further comprises a guide plate and a fixing piece;

[0011] The top end of the flow guide plate is connected to the outer wall of the support pile or the side wall of the foundation pit through the fixing member; and the bottom end of the flow guide plate abuts against one end face of the first plate body towards the second plate body.

[0012] Optionally, the top end of the flow guide plate is provided with a sealing strip.

[0013] The fixing member is arranged below the sealing strip.

[0014] Optionally, the top end of the flow guide plate is provided with a sealing strip.

[0015] The fixing member is connected to the outer wall of the support pile after sequentially penetrating through the flow guide plate and the sealing strip.

[0016] Optionally, the flow guide plate is a flexible plate body.

[0017] The flow guide plate is attached to the outer wall of the support pile.

[0018] Optionally, the waist beam comprises a web and a pair of flange plates connected in H shape.

[0019] The bottom end of the first plate body and the bottom end of the second plate body are welded to the top end of a pair of flange plates in one-to-one correspondence.

[0020] One end face of one of the flange plates is connected to the outer wall of the support pile; and the top face of the web is perpendicular to the axis of the support pile.

[0021] Optionally, the waist beam comprises an angle steel and a web and a pair of flange plates connected in H shape.

[0022] The bottom end of the first plate body and the bottom end of the second plate body are welded to the top end of a pair of flange plates in one-to-one correspondence.

[0023] One end of the angle steel is connected to the outer wall of the support pile, and the other end is connected to one end face of one of the flange plates; and the first plate body, the web and the second plate body enclose the drainage ditch.

[0024] Optionally, the waist beam is an anchor rod waist beam or a support waist beam.

[0025] (Three) beneficial effects

[0026] The beneficial effects of the utility model are:

[0027] The first plate body, the waist beam and the second plate body can enclose the drainage ditch, the drainage ditch is suspendedly arranged, so that the seepage water of the side wall of the foundation pit can be blocked by the drainage ditch, the seepage water of the side wall of the foundation pit is prevented from flowing to the bottom of the foundation pit groove, the dryness of the bottom of the foundation pit groove is ensured, and dry groove operation of the bottom of the foundation pit groove is realized.

[0028] The waist beam drainage ditch is suspended on the outer wall of the supporting pile, without trench excavation, concrete pouring and other operations, so that the construction process of the waist beam drainage ditch is greatly simplified, the construction time is reduced, the situation of seepage and leakage of the side wall of the foundation pit can be responded more quickly, and the water immersion of the bottom of the foundation pit trench is reduced or the water immersion of the bottom of the foundation pit trench is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is a side sectional view of the waist beam drainage ditch of the side wall of the foundation pit of the utility model;

[0030] Fig. 2 It is a front view of the waist beam drainage ditch of the side wall of the foundation pit of the utility model;

[0031] Fig. 3 It is a top view of the waist beam drainage ditch of the side wall of the foundation pit of the utility model.

[0032] REFERENCE SIGNS

[0033] 1: fixing piece;

[0034] 2: flow guide plate; 21: sealing strip;

[0035] 3: first plate body;

[0036] 4: second plate body;

[0037] 5: support piece;

[0038] 6: waist beam; 61: web plate;

[0039] 7: angle steel. DETAILED DESCRIPTION

[0040] In order to better explain the utility model, so as to facilitate understanding, the utility model is described in detail by specific implementation mode in combination with the drawings.

[0041] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indications also change accordingly.

[0042] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0043] In the utility model, unless another definite provision and limitation, the terms "connect", "fix" and the like should be understood broadly, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated, "connect" can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the communication or the interaction of two elements, unless another definite limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0044] Referring to Figs. 1 to 3 The utility model provides a waist beam drainage ditch of foundation pit side wall, waist beam drainage ditch includes waist beam 6, first plate body 3, second plate body 4 and support piece 5, waist beam 6 is suspended and is arranged on the outer wall of support pile, the one end surface of first plate body 3 is in contact with the outer wall of support pile, and the other end surface is connected with the first end of support piece 5, and the bottom end of first plate body 3 is connected with waist beam 6, the one end surface of second plate body 4 is connected with the second end of support piece 5, and the bottom end of second plate body 4 is connected with waist beam 6, and first plate body 3, waist beam 6 and second plate body 4 are enclosed into drainage ditch.

[0045] In the embodiment, first plate body 3 and second plate body 4 are parallelly arranged, and are connected by multiple support pieces 5, to form a support beam. The cross sections of the support beam and the waist beam 6 are both H-shaped. The two side bottom ends of the support beam are welded to the two side top ends of the waist beam 6. The welding part does not have any gap, which enhances the connection strength of the waist beam 6 on the support pile. The first plate body 3, the second plate body 4 and the support piece 5 are made of conventional steel and have a certain thickness, which can ensure the stability and strength of the beam and is convenient for on-site material selection.

[0046] The first plate body 3, the waist beam 6 and the second plate body 4 can be enclosed into a drainage ditch. The drainage ditch is suspended, so that the leakage water of the foundation pit side wall can be blocked by the drainage ditch, avoiding the leakage water of the foundation pit side wall flowing to the bottom of the foundation pit groove, ensuring the dryness of the bottom of the foundation pit groove, and realizing the dry groove operation of the bottom of the foundation pit groove. The leakage water is discharged through the two end ports of the drainage ditch and needs to be discharged to the outside of the foundation pit.

[0047] The waist beam drainage ditch is suspended on the outer wall of the support pile, without the need for trench excavation, concrete pouring and other operations, which greatly simplifies the construction process of the waist beam drainage ditch, reduces the construction time, can more quickly respond to the water leakage of the foundation pit side wall, and reduces the water immersion of the bottom of the foundation pit groove or avoids the water immersion of the bottom of the foundation pit groove.

[0048] Further, the waist beam drainage ditch further comprises a guide plate 2 and a fixing member 1; the top end of the guide plate 2 is connected to the outer wall of the support pile or the side wall of the foundation pit through the fixing member 1; and the bottom end of the guide plate 2 abuts against one end face of the first plate body 3 facing the second plate body 4. Specifically, the guide plate 2 can guide the seepage water of the side wall of the foundation pit to flow into the drainage ditch. Meanwhile, the bottom end of the guide plate 2 abuts against one end face of the second plate body 4, that is, the bottom end of the guide plate 2 extends into the drainage ditch, so that the guide plate 2 can cover the gap between the support pile and the top end of the first plate body 3, avoiding the seepage water from seeping into the bottom of the foundation pit through the gap, and improving the reliability of the drainage ditch.

[0049] In an embodiment, the top end of the guide plate 2 is provided with a sealing strip 21; and the fixing member 1 is arranged below the sealing strip 21. Specifically, the sealing strip 21 is fixed to the top end of the guide plate 2, and the installation height of the fixing member 1 is slightly lower than that of the sealing strip 21. The sealing strip 21 can be a rubber strip, which can be deformed to a certain extent, and after the guide plate 2 is pressed by the fixing member 1, the sealing strip 21 can self-adaptively fill the gap between the support pile and the top of the guide plate 2, avoiding the seepage water from flowing into the gap between the support pile and the top of the guide plate 2, and further avoiding the seepage water from flowing to the bottom of the foundation pit. The fixing member 1 is an expansion bolt or a steel nail, which can quickly complete the fixation of the guide plate 2 on the support pile and shorten the construction time.

[0050] In another embodiment, the top end of the guide plate 2 is provided with a sealing strip 21; and the fixing member 1 is connected to the outer wall of the support pile after penetrating the guide plate 2 and the sealing strip 21 in sequence. The penetration of the fixing member 1 into the sealing strip 21 enhances the abutting strength of the sealing strip 21 and the outer wall of the support pile, and further enhances the sealing performance of the sealing strip 21. Compared with the previous embodiment, the seepage water is not easy to seep from the gap between the fixing member 1 and the perforation of the guide plate 2, and thus the seepage water is effectively prevented from flowing to the bottom of the foundation pit.

[0051] Optionally, the guide plate 2 is a flexible plate body; and the guide plate 2 is attached to the outer wall of the support pile. The flexible plate body can be a galvanized thin steel plate, which can fit the actual shape of the side wall of the foundation pit, so that the bottom end of the guide plate 2 is tightly attached to one end face of the first plate body 3 facing the second plate body 4, avoiding the seepage water from splashing into the gap between the bottom end of the guide plate 2 and the first plate body 3. Meanwhile, the distance between the guide plate 2 and the second plate body 4 is increased, effectively avoiding or reducing the seepage water from splashing out of the drainage ditch from above the second plate body 4 along the length direction of the support member 5, ensuring that the seepage water can be stably guided into the drainage ditch through the guide plate 2.

[0052] In the first embodiment, the waist beam 6 comprises a web 61 and a pair of flange plates connected in H shape; the bottom end of the first plate body 3 and the bottom end of the second plate body 4 are welded to the top end of the pair of flange plates in one-to-one correspondence; one end face of one flange plate is connected to the outer wall of the support pile; the first plate body 3, the web 61 and the second plate body 4 enclose the drainage ditch. In this embodiment, the waist beam 6 is an I-beam waist beam, the length direction of the web 61 is the drainage direction of the drainage ditch, the width direction of the web 61 is perpendicular to the axis of the support pile, and the top surface of the web 61 is the bottom surface of the drainage ditch. By connecting the waist beam 6, the support cross beam and the support pile correspondingly, the construction process of the drainage ditch is greatly simplified, and the construction time is shortened.

[0053] In the second embodiment, the waist beam 6 comprises an angle steel and a web 61 and a pair of flange plates connected in H shape; the bottom end of the first plate body 3 and the bottom end of the second plate body 4 are welded to the top end of the pair of flange plates in one-to-one correspondence; one end of the angle steel is connected to the outer wall of the support pile, and the other end is connected to one end face of one flange plate; the first plate body 3, the web 61 and the second plate body 4 enclose the drainage ditch. Compared with the flat waist beam drainage ditch of the first embodiment, the present embodiment is a inclined waist beam drainage ditch, the web 61 is inclinedly arranged through the angle steel, thereby enhancing the flowability of water flow on the web 61 and improving the drainage performance of the drainage ditch.

[0054] In addition, the waist beam 6 is an anchor rod waist beam or a support waist beam, which is convenient to obtain and connect. As a horizontal force receiving member in the foundation pit support project, the waist beam 6 can be combined with the prestressed anchor rod, and can be combined with the steel support or the concrete support correspondingly. By using the foundation pit support scheme of the support pile combined with the anchor rod or the support pile combined with the support, the foundation pit can be kept relatively dry in the case of large-area seepage of water on the side wall of the foundation pit, without affecting the construction of the cushion layer and the waterproof layer, and can be widely applied to projects where underground water is difficult to control, and the seepage water on the side wall is organized to be drained.

[0055] In an embodiment, the waist beam 6 is installed in a conventional construction manner, and it is necessary to ensure that different sections of the waist beam 6 are at the same elevation, and the different sections of the waist beam 6 need to be integrated by welding without leaving gaps; the first plate body 3 is installed, and the first plate body 3 needs to be closely attached to the support pile and welded with the flange of the waist beam 6; then the second plate body 4 is installed, and the second plate body 4 is welded with the other flange of the waist beam 6; finally, the support piece 5 is installed, and the support piece 5 is welded with the first plate body 3 and the second plate body 4 to ensure the stability of the whole; finally, the flow guide plate 2 is installed, the upper part of the flow guide plate 2 is provided with a sealing strip 21, and the flow guide plate 2 is fixed on the support pile through the densely arranged fixing pieces 1, it is necessary to ensure that the upper part of the flow guide plate 2 is consistent with the shape of the side wall of the foundation pit, the lower part is slightly lower than the top of the first plate body 3, and the lower part of the flow guide plate 2 needs to be placed in the drainage ditch, and thus the waist beam drainage ditch is installed and manufactured. When the side wall of the foundation pit leaks, the water flows along the support pile to the flow guide plate 2, and is drained to the drainage ditch through the flow guide plate 2, so that the leakage of the side wall of the foundation pit does not continue to seep downward to affect the dryness of the foundation trench.

[0056] It should be understood that the above description of specific embodiments of the present application is only for the purpose of illustrating the technical route and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, but the present application is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present application should be covered within the protection scope of the present application.

Claims

1. A waist beam drainage ditch for the sidewall of an excavation pit, wherein the waist beam drainage ditch is connected to the support piles, characterized in that, The waist beam drainage ditch includes a waist beam (6), a first plate (3), a second plate (4), and a support member (5); The waist beam (6) is suspended on the outer wall of the support pile; one end face of the first plate (3) abuts against the outer wall of the support pile, and the other end face is connected to the first end of the support member (5); the bottom end of the first plate (3) is connected to the waist beam (6); one end face of the second plate (4) is connected to the second end of the support member (5); the bottom end of the second plate (4) is connected to the waist beam (6); The first plate (3), the waist beam (6), and the second plate (4) form a drainage ditch.

2. The drainage ditch of the waist beam on the sidewall of the foundation pit according to claim 1, characterized in that, The waist beam drainage ditch also includes a guide plate (2) and a fixing component (1); The top end of the guide plate (2) is connected to the outer wall of the support pile or the side wall of the foundation pit through the fixing member (1); the bottom end of the guide plate (2) abuts against the end face of the first plate (3) facing the second plate (4).

3. The waist beam drainage ditch of the foundation pit sidewall according to claim 2, characterized in that, A sealing strip (21) is provided at the top of the guide plate (2); The fastener (1) is located below the sealing strip (21).

4. The drainage ditch of the waist beam on the sidewall of the foundation pit according to claim 2, characterized in that, A sealing strip (21) is provided at the top of the guide plate (2); The fixing member (1) passes through the guide plate (2) and the sealing strip (21) in sequence and is then connected to the outer wall of the support pile.

5. The drainage ditch of the waist beam on the sidewall of the foundation pit according to claim 2, characterized in that, The guide plate (2) is a flexible plate. The guide plate (2) is attached to the outer wall of the support pile.

6. The drainage ditch of the waist beam on the sidewall of the foundation pit according to any one of claims 1-5, characterized in that, The waist beam (6) includes a web (61) connected in an H-shape and a pair of flanges; The bottom ends of the first plate (3) and the second plate (4) are welded to the top ends of the pair of flange plates in a one-to-one correspondence. One end face of the flange plate is connected to the outer wall of the support pile; the first plate (3), the web plate (61) and the second plate (4) form the drainage ditch.

7. The drainage ditch of the waist beam on the sidewall of the foundation pit according to any one of claims 1-5, characterized in that, The waist beam (6) includes angle steel, a web (61) connected in an H-shape, and a pair of flanges; The bottom ends of the first plate (3) and the second plate (4) are welded to the top ends of the pair of flange plates in a one-to-one correspondence. One end of the angle steel is connected to the outer wall of the support pile, and the other end is connected to one end face of a flange plate; the first plate (3), the web plate (61) and the second plate (4) form the drainage ditch.

8. The drainage ditch of the waist beam on the sidewall of the foundation pit according to any one of claims 1-5, characterized in that, The waist beam (6) is an anchor waist beam or a support waist beam.

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