Foundation pit engineering construction joint self-sealing steel enclosing purlin

Abstract

The utility model provides a foundation pit engineering construction joint self-sealing steel enclosing purlin, and relates to the technical field of foundation pit construction. The utility model discloses a concrete filling device which comprises profile steel and a filling bag used for containing concrete, a connecting groove is formed in one end of the profile steel, a connector matched with the connecting groove is arranged at the other end of the profile steel, a connecting hole is formed in the connector, and a screw joint hole corresponding to the connecting hole is formed in the connecting groove; the filling bag is detachably connected with the side, extending in the length direction of the profile steel, of the profile steel, and a grouting opening is formed in the top of the filling bag. Complete and compact concrete bricks can be formed between the steel enclosing purlin and the soil wall of the foundation pit, and it is guaranteed that the pressure of the soil wall of the foundation pit can be well transmitted to the steel enclosing purlin through concrete.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit construction, and in particular to a self-sealing steel purlin for construction joints in foundation pit projects. Background Art

[0002] Steel purlins are a commonly used support method in foundation pit projects. By placing steel purlins on the soil walls within the foundation pit, they can provide stronger support for these walls and ensure the stability of the foundation pit.

[0003] When the existing steel purlins are installed, a certain gap will be left between themselves and the soil wall of the foundation pit. This gap will be directly filled with concrete in the later stage. However, due to the lack of fixation of the concrete between the steel purlins and the soil wall of the foundation pit, it is easy for some concrete to leak from the gap or flow to the side during the concrete solidification process, which will lead to the filling between the steel purlins and the soil wall of the foundation pit being loose, making it impossible for the pressure of the soil wall of the foundation pit to be well transferred to the steel purlins through the concrete.

[0004] In view of this, it is necessary to provide a self-sealing steel purlin for construction joints in foundation pit engineering. Utility Model Content

[0005] In order to solve the problem of loose filling between existing steel perimeter purlins and the soil wall of the foundation pit, the present application provides a self-sealing steel perimeter purlin for the construction joint of the foundation pit project.

[0006] The present application provides a self-sealing steel purlin for construction joints in foundation pit projects, which adopts the following technical solution: comprising a steel section and a filling bag for holding concrete, wherein one end of the steel section is provided with a connecting groove, the other end of the steel section is provided with a connecting head adapted to the connecting groove, the connecting head is provided with a connecting hole, and the connecting groove is provided with a screw hole corresponding to the connecting hole;

[0007] The filling bag is detachably connected to one side of the section steel extending along the length direction thereof, and a grouting port is provided on the top of the filling bag.

[0008] By adopting the above technical solution, two adjacent steel purlins can be connected by first inserting the connecting head of one into the connecting groove of the other, and then connecting with the screw hole by passing the bolt through the connecting hole; after fixing the steel section at a position with a certain distance from the soil wall of the foundation pit, the user can use a pressure pump to fill the filling bag with concrete from the grouting port. Taking the rectangular filling bag as an example, when the filling bag is filled with concrete, the concrete will take the shape of a rectangular parallelepiped under the restriction of the bag body. After the concrete in these filling bags solidifies, a complete and dense rectangular concrete brick will be formed between the steel section and the soil wall of the foundation pit, so that the pressure of the soil wall of the foundation pit can be well transferred to the steel section through the concrete.

[0009] Specifically, an inclined surface is formed on the groove wall of the connecting groove, and the inclined surface gradually inclines toward the center of the connecting groove in the direction from approaching to away from the connecting head;

[0010] The side wall of the connector can abut against and fit the inclined surface.

[0011] By adopting the above technical solution, the side wall of the connecting head can abut and fit the inclined surface to form a mortise and tenon structure between the connecting head and the groove wall of the connecting groove, so that the connecting head is not easy to slip out of the connecting groove along the axial direction of the steel section.

[0012] Specifically, a connecting ring is provided at the bag opening of the filling bag, a fixing hole is opened on the connecting ring, and a mounting screw hole adapted to the fixing hole is opened on the steel section. The filling bag can be connected to the steel section by screwing bolts through the fixing hole and the mounting screw hole.

[0013] By adopting the above technical solution, the filling bag can be detachably connected to the steel section through the cooperation of the connecting ring and the bolts, so that after the workers have used the self-sealing steel purlin for the construction joint of the foundation pit project, they can directly remove the old filling bag from the steel section and replace it with a new filling bag, without the need to take time and effort to clean the solidified concrete in the old filling bag, thereby making it very convenient to reuse the self-sealing steel purlin for the construction joint of the foundation pit project.

[0014] Specifically, it also includes a pressure dividing assembly, which includes a pressure dividing column and a driving member. A slide groove is provided on the side of the steel section facing the filling bag, and one end of the pressure dividing column is inserted into the slide groove.

[0015] The driving member is transmission-connected to the pressure dividing column and can drive the pressure dividing column to slide along the slide groove. A pressure dividing surface is formed on one end of the pressure dividing column close to the filling bag, and the pressure dividing surface can abut against the concrete in the filling bag.

[0016] By adopting the above technical solution, the pressure-dividing surface of the pressure-dividing column can abut against the concrete in the filling bag and increase the contact area between the steel and the concrete, so as to reduce the pressure from the concrete on the steel and protect the steel.

[0017] Furthermore, a driving screw hole leading to the slide groove is opened on the side surface of the steel section facing away from the filling bag, and the driving member is a bolt adapted to the driving screw hole, one end of the bolt can be inserted into the driving screw hole and abut against the end of the pressure dividing column away from the filling bag.

[0018] By adopting the above technical solution, after the filling bag is filled with concrete, workers can push the pressure dividing column out of the slide groove by screwing the driving part into the driving screw hole, which can not only make the pressure dividing surface on the pressure dividing column abut against the concrete, but also provide certain support for the flowing concrete in the filling bag, so that the shape of the concrete after solidification will not change much compared with the shape before solidification.

[0019] Furthermore, a rotary rod is provided at one end of the driving member away from the filling bag, and the middle portion of the rotary rod is connected to the driving member.

[0020] By adopting the above technical solution, users can select the driving parts by manually twisting the rotary rod, so that workers can use the self-sealing steel purlin for the construction joint of the foundation pit project more conveniently.

[0021] Furthermore, a rotation groove is provided at one end of the pressure dividing column away from the filling bag, a thrust ball bearing is provided in the rotation groove, and the driving member can abut against one side annular surface of the thrust ball bearing.

[0022] By adopting the above technical solution, the thrust ball bearing can reduce the friction between the pressure dividing column and the driving member, so that the driving member can push the pressure dividing column while rotating.

[0023] Furthermore, the pressure dividing surface is a conical surface.

[0024] By adopting the above technical solution, the design of the conical surface makes it difficult for the pressure dividing column to be stuck with the solidified concrete, thereby making it convenient for workers to remove the pressure dividing column from the filling bag containing the solidified concrete.

[0025] In summary, this application has the following beneficial technical effects:

[0026] The invention comprises a steel section and a filling bag for holding concrete. A connection groove is provided at one end of the steel section, and a connection head adapted to the connection groove is provided at the other end of the steel section. The connection head is provided with a connection hole, and the connection groove is provided with a screw hole corresponding to the connection hole. The filling bag is detachably connected to a side of the steel section extending along its length. A grouting port is provided at the top of the filling bag. Two adjacent steel purlins can be connected by first inserting the connection head of one into the connection groove of the other and then connecting them with bolts through the connection hole and the screw hole. After the steel section is fixed at a position with a certain distance from the soil wall of the foundation pit, the user can use a pressure pump to fill the filling bag with concrete through the grouting port. Taking a rectangular filling bag as an example, when the filling bag is filled with concrete, the concrete will take on a rectangular shape under the restriction of the bag body. After the concrete in the filling bag solidifies, a complete and dense rectangular concrete brick will be formed between the steel section and the soil wall of the foundation pit, so that the pressure of the soil wall of the foundation pit can be effectively transferred to the steel section through the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional diagram of a self-sealing steel purlin for construction joints in foundation pit engineering according to the present application;

[0028] Figure 2 This is a three-dimensional diagram from another perspective of a self-sealing steel purlin for construction joints in foundation pit engineering according to the present application;

[0029] Figure 3 It is a schematic cross-sectional view taken along the central axis of the pressure dividing column, in which only a self-sealing steel purlin of the construction joint of the foundation pit project is shown.

[0030] Figure numerals: 1. Steel section; 11. Connecting groove; 111. Inclined surface; 12. Connecting head; 2. Filling bag; 21. Grouting port; 211. Cap; 22. Connecting ring; 3. Pressure dividing assembly; 31. Pressure dividing column; 311. Pressure dividing surface; 312. Thrust ball bearing; 32. Driving part; 321. Rotating rod; 4. Concrete. DETAILED DESCRIPTION

[0031] Figure 1 This is a three-dimensional diagram of a self-sealing steel purlin for construction joints in foundation pit engineering according to the present application. Figure 2 This is a three-dimensional diagram from another perspective of a self-sealing steel purlin for construction joints in foundation pit engineering of the present application. Figure 3 This is a schematic cross-sectional view taken along the central axis of the pressure dividing column, which only shows a self-sealing steel purlin for the construction joint of the foundation pit project. Figure 1 、 Figure 2 and Figure 3The present application provides a self-sealing steel purlin for construction joints of foundation pit projects, comprising: a steel section 1 and a filling bag 2 for holding concrete 4, a connecting groove 11 being provided at one end of the steel section 1, a connecting head 12 being adapted to the connecting groove 11 being provided at the other end of the steel section 1, a connecting hole being provided on the connecting head 12, and a screw hole corresponding to the connecting hole being provided on the connecting groove 11; the filling bag 2 is detachably connected to one side of the steel section 1 extending along its length direction, a grouting port 21 being provided at the top of the filling bag 2, and a cap 211 for closing the grouting port 21 being sleeved on the grouting port 21.

[0032] Through the above arrangement, two adjacent steel purlins can be connected by first inserting the connecting head 12 of one into the connecting groove 11 of the other, and then connecting with the screw hole by passing the bolt through the connecting hole; after fixing the steel section 1 at a position with a certain distance from the soil wall of the foundation pit, the user can use a pressure pump to fill the filling bag 2 with concrete 4 from the grouting port 21. Taking the rectangular filling bag 2 as an example, when the filling bag 2 is filled with concrete 4, the concrete 4 will take the shape of a rectangular parallelepiped under the restriction of the bag body. After the concrete 4 in these filling bags 2 solidifies, a complete and dense rectangular concrete brick 4 will be formed between the steel section 1 and the soil wall of the foundation pit, so that the pressure of the soil wall of the foundation pit can be well transmitted to the steel section 1 through the concrete 4.

[0033] Preferably, the filling bag 2 can adopt a one-way pressure filling bag 2, which includes a bag body and multiple groups of rigid rings. The multiple groups of rigid rings are fixedly connected at equal intervals on the circumference of the outer wall of the bag body so that the bag body can only expand in one direction (i.e., the direction close to the soil wall of the foundation pit).

[0034] See also Figure 1 and Figure 3 Specifically, the upper and lower side walls of the connecting groove 11 can be set as inclined surfaces 111, and each inclined surface 111 gradually tilts toward the center of the connecting groove 11 in the direction of approaching to and away from the connecting head 12. The side walls of the connecting head 12 can abut and fit the inclined surfaces 111, so that a mortise and tenon structure can be formed between the connecting head 12 and the groove wall of the connecting groove 11, so that the connecting head 12 is not easy to slip out of the connecting groove 11 along the axial direction of the steel section 1.

[0035] See also Figure 2 and Figure 3A connecting ring 22 is provided at the bag opening of the filling bag 2, and a fixing hole is opened on the connecting ring 22, and a mounting screw hole adapted to the fixing hole is opened on the steel section 1, so that the filling bag 2 can be detachably connected to the steel section 1 through the cooperation of the connecting ring 22 and the bolt, so that after the workers have used up the self-sealing steel purlin for the construction joint of the foundation pit project, they can directly remove the old filling bag 2 from the steel section 1 and replace it with a new filling bag 2, without the need to waste time and effort to clean the solidified concrete 4 in the old filling bag 2, thereby making it very convenient to reuse the self-sealing steel purlin for the construction joint of the foundation pit project.

[0036] See also Figure 1 and Figure 3 A self-sealing steel purlin for the construction joint of a foundation pit project also includes a pressure dividing component 3, which includes a pressure dividing column 31 and a driving member 32. A slide groove is provided on the side of the steel section 1 facing the filling bag 2, and one end of the pressure dividing column 31 is inserted into the slide groove; a driving screw hole leading to the slide groove is provided on the side of the steel section 1 facing away from the filling bag 2, and the driving member 32 is a bolt adapted to the driving screw hole. One end of the bolt can be inserted into the driving screw hole and abut against the end of the pressure dividing column 31 away from the filling bag 2, and a pressure dividing column 31 is formed on the end close to the filling bag 2. Pressure surface 311. After the filling bag 2 is filled with concrete 4, the worker can push the pressure dividing column 31 out of the slide groove by screwing the driving member 32 into the driving screw hole. This can make the pressure dividing surface 311 on the pressure dividing column 31 abut against the concrete 4 and increase the contact area between the steel section 1 and the concrete 4, so as to reduce the pressure from the concrete 4 on the steel section 1 and protect the steel section 1; it can also provide certain support for the flowing concrete 4 in the filling bag 2, so that the shape of the concrete 4 after solidification will not change much compared with the shape before solidification.

[0037] See also Figure 1 and Figure 3 The cam 321 is provided with a screw thread 322 at one end of the driving member 32 and is connected to the driving member 32 in the middle portion. The user can select the driving member 32 by manually twisting the screw thread 321, so that the workers can use the self-sealing steel purlin of the foundation pit construction joint conveniently. A rotating groove can also be provided at the end of the pressure dividing column 31 and is away from the filling bag 2, and a thrust ball bearing 312 is provided in the rotating groove. The driving member 32 can abut against one side annular surface of the thrust ball bearing 312, so that the friction between the pressure dividing column 31 and the driving member 32 can be reduced by the thrust ball bearing 312, so that the driving member 32 can rotate and push the pressure dividing column 31 at the same time. The pressure dividing surface 311 can also be set as a conical surface, so that the pressure dividing column 31 and the solidified concrete 4 are not easily stuck, so that the workers can remove the pressure dividing column 31 from the filling bag 2 containing the solidified concrete 4 conveniently.

[0038] The working principle of the self-sealing steel purlin for construction joints in foundation pit engineering of the present application is as follows:

[0039] The invention comprises a steel section 1 and a filling bag 2 for holding concrete 4, a connecting groove 11 is provided at one end of the steel section 1, a connecting head 12 adapted to the connecting groove 11 is provided at the other end of the steel section 1, a connecting hole is provided on the connecting head 12, and a screw hole corresponding to the connecting hole is provided on the connecting groove 11; the filling bag 2 is detachably connected to one side of the steel section 1 extending along its length direction, a grouting port 21 is provided at the top of the filling bag 2, and two adjacent steel purlins can be connected by first inserting the connecting head 12 of one into the connecting groove 11 of the other, and then connecting the two adjacent steel purlins by passing the connecting head 12 of one into the connecting groove 11 of the other, and then connecting the two adjacent steel purlins by passing the connecting hole and the screw hole with a bolt. to achieve connection; after fixing the steel section 1 at a certain distance from the soil wall of the foundation pit, the user can use a pressure pump to fill the filling bag 2 with concrete 4 from the grouting port 21. Taking the rectangular filling bag 2 as an example, when the filling bag 2 is filled with concrete 4, the concrete 4 will take the shape of a rectangular parallelepiped under the restriction of the bag body. After the concrete 4 in the filling bag 2 solidifies, a complete and dense rectangular concrete brick 4 will be formed between the steel section 1 and the soil wall of the foundation pit, so that the pressure of the foundation pit soil wall can be well transmitted to the steel section 1 through the concrete 4.

[0040] It should be noted that the above are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A self-sealing steel purlin for construction joints in foundation pit engineering, characterized by: The invention comprises a steel section (1) and a filling bag (2) for containing concrete (4), wherein a connection groove (11) is provided at one end of the steel section (1), a connection head (12) adapted to the connection groove (11) is provided at the other end of the steel section (1), a connection hole is provided on the connection head (12), and a screw hole corresponding to the connection hole is provided on the connection groove (11); The filling bag (2) is detachably connected to one side of the section steel (1) extending along its length direction, and a grouting port (21) is provided at the top of the filling bag (2).

2. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 1, characterized in that: An inclined surface (111) is formed on the groove wall of the connecting groove (11), and the inclined surface (111) gradually tilts toward the center of the connecting groove (11) in a direction from approaching to moving away from the connecting head (12); The side wall of the connector (12) can abut against and fit the inclined surface (111).

3. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 1, characterized in that: A connecting ring (22) is provided at the bag opening of the filling bag (2), a fixing hole is provided on the connecting ring (22), and a mounting screw hole adapted to the fixing hole is provided on the steel section (1), so that the filling bag (2) can be connected to the steel section (1) by means of bolts passing through the fixing hole and being screwed to the mounting screw hole.

4. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 1, characterized in that: It also includes a pressure dividing assembly (3), the pressure dividing assembly (3) including a pressure dividing column (31) and a driving member (32), a slide groove is provided on a side surface of the section steel (1) facing the filling bag (2), and one end of the pressure dividing column (31) is inserted into the slide groove; The driving member (32) is transmission-connected to the pressure dividing column (31) and can drive the pressure dividing column (31) to slide along the slide groove; a pressure dividing surface (311) is formed on one end of the pressure dividing column (31) close to the filling bag (2); and the pressure dividing surface (311) can abut against the concrete (4) in the filling bag (2).

5. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 4, characterized in that: A driving screw hole leading to the slide groove is provided on the side surface of the steel section (1) facing away from the filling bag (2); the driving member (32) is a bolt adapted to the driving screw hole, one end of the bolt can be inserted into the driving screw hole and abut against the end of the pressure dividing column (31) away from the filling bag (2).

6. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 5, characterized in that: A rotating rod (321) is provided at one end of the driving member (32) away from the filling bag (2), and the middle portion of the rotating rod (321) is connected to the driving member (32).

7. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 5, characterized in that: A rotation groove is provided at one end of the pressure dividing column (31) away from the filling bag (2), a thrust ball bearing (312) is provided in the rotation groove, and the driving member (32) can abut against a side annular surface of the thrust ball bearing (312).

8. The self-sealing steel purlin for construction joints in foundation pit engineering according to claim 4, characterized in that: The pressure dividing surface (311) is a conical surface.

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