Vertical ladder cage connecting structure for foundation pit

Abstract

The utility model provides a vertical ladder cage connecting structure for a foundation pit, which belongs to the technical field of ladder cage installation and comprises a plurality of unit sections, the unit sections are installed in the vertical direction to form a ladder cage, and every two adjacent unit sections are detachably connected. At least one supporting piece is horizontally arranged in the foundation pit, the height of the supporting piece is higher than that of the bottom of the foundation pit, and at least one unit joint adjacent to the supporting piece is detachably connected with the supporting piece; according to the utility model, when the bottom plate needs to be mounted at the bottom of the foundation pit, only the unit section on the lowest layer and the unit section on the uppermost layer need to be detached, then the bottom plate is mounted at the bottom of the foundation pit, and after the bottom plate is mounted, the unit section on the lowest layer is re-mounted in place. The installation of the base plate of the foundation pit can be completed without integrally disassembling the ladder cage, so that the times of hoisting and installing the unit joints are reduced, and the manual installation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ladder cage installation technical field, concretely relates to a vertical ladder cage connecting structure for foundation pit. BACKGROUND

[0002] In the field of construction, ladder cage refers to the staircase or ladder with protective structure, which is surrounded by fence or net structure.

[0003] In the prior art, the vertical ladder cage installation process in the foundation pit comprises the following steps: firstly, a position is found at the bottom of the foundation pit to pour a concrete base, and the four edges of the ladder cage base are fixed to the concrete base; a grounding rod is arranged to form a whole with the ladder cage and the concrete base; then, a finished vertical ladder cage is installed on the basis of the ladder cage base and is fixed by using high-strength bolts; and finally, the vertical ladder cage is further reinforced by a middle tie member.

[0004] In the prior art, when the bottom plate needs to be constructed, the whole ladder cage needs to be removed, and then a concrete base is poured at another position and the ladder cage is installed again, which is a relatively complicated process and has high cost. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model solves the technical problem that in the prior art, the whole ladder cage needs to be removed and installed at another position when the bottom plate is installed, thereby providing a vertical ladder cage connecting structure for foundation pit.

[0006] In order to solve the above technical problem, the utility model provides a vertical ladder cage connecting structure for foundation pit, which comprises: a plurality of unit sections, the plurality of unit sections are installed to form a ladder cage in the vertical direction, and adjacent two unit sections are detachably connected;

[0007] At least one support is horizontally arranged in the foundation pit, the height of the support is higher than the bottom of the foundation pit, and at least one unit section adjacent to the support is detachably connected with the support.

[0008] Preferably, the support has two supports arranged in parallel and at intervals, and the unit section is installed between the two supports.

[0009] Preferably, the upper end surface of the support is detachably provided with at least two connecting members on both sides of the unit section, the connecting members are perpendicular to the support, and the unit section is detachably connected with the connecting members.

[0010] Preferably, a plurality of tie members are arranged between the side end surface of the unit section and the side end surface of the foundation pit.

[0011] Preferably, the height of the support to the bottom of the foundation pit is not less than the height of a single unit section.

[0012] Preferably, the unit section comprises a frame and a pedestrian passage arranged in the frame, and the pedestrian passage is used for personnel walking.

[0013] Preferably, the pedestrian passage comprises a staircase, and the staircase is arranged in the frame in a broken line shape.

[0014] Preferably, the staircase of the unit section at the bottom of the foundation pit is detachably connected with the frame.

[0015] Preferably, the support is arranged in two rows in the height direction.

[0016] The technical scheme of the utility model has the following advantages:

[0017] 1. The vertical ladder cage connecting structure for a foundation pit provided by the utility model, when it is necessary to install a bottom plate at the bottom of the foundation pit, only the unit section at the lowermost layer and the unit section at the upper layer need to be disassembled, then the bottom plate installation construction is carried out at the bottom of the foundation pit, after the installation of the bottom plate is completed, the unit section at the lowermost layer is reinstalled in place, the ladder cage does not need to be disassembled as a whole, and the installation of the bottom plate of the foundation pit can be completed, thereby reducing the hoisting and installation times of the unit section and reducing the labor installation cost.

[0018] 2. The vertical ladder cage connecting structure for a foundation pit provided by the utility model, two supports are arranged in a horizontal direction, which can effectively disperse the weight of the ladder cage and improve the stability of the structure.

[0019] 3. The vertical ladder cage connecting structure for a foundation pit provided by the utility model, the unit section transmits the load to the support through the connecting piece, so that the whole structure is more stable when bearing heavy load. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0021] Figure 1 The front view of the vertical ladder cage connecting structure for a foundation pit provided in an embodiment of the utility model.

[0022] EXPLANATION OF REFERENCE NUMERALS:

[0023] 1, support; 2, unit section; 3, connecting piece; 4, frame; 5, staircase; 6, foundation pit. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0028] The vertical ladder cage connecting structure for foundation pit 6 provided in the embodiment is used for installing the ladder cage in the foundation pit 6, and when the bottom plate of the foundation pit 6 is installed, the ladder cage does not need to be disassembled as a whole.

[0029] As Figure 1As shown, a specific embodiment of the vertical ladder cage connecting structure for the foundation pit 6 provided by the present embodiment is shown, a plurality of unit sections 2, the structure of the unit section 2 is the prior art, and the present embodiment will not be described in detail. When installing, the bottom of the foundation pit 6 is first installed with a unit section 2, and then the unit section 2 is gradually installed on the first unit section 2, thereby forming a channel in the height direction for personnel to walk from the top of the foundation pit 6 to the bottom of the foundation pit 6. In the height direction, the adjacent two unit sections 2 are connected by bolt fixing. At least one support 1 is horizontally arranged in the foundation pit 6, the height of the support 1 is higher than the bottom of the foundation pit 6, and at least one unit section 2 adjacent to the support 1 is detachably connected with the support 1. By horizontally arranging the support 1 and detachably connecting the unit section 2 with the support 1, the overall weight of the unit section 2 is borne by the support 1, at this time when the bottom plate needs to be installed at the bottom of the foundation pit 6, only the lowermost unit section 2 and the upper unit section 2 need to be disassembled, then the bottom plate installation construction is carried out at the bottom of the foundation pit 6, after the bottom plate installation is completed, the lowermost unit section 2 is reinstalled in place. Without disassembling the ladder cage as a whole, the installation of the bottom plate of the foundation pit 6 can be completed, thereby reducing the hoisting and installation times of the unit section 2 and reducing the labor installation cost.

[0030] As shown in Figure 1 In the present embodiment, the support 1 has two parallel and spaced-apart supports, the two supports 1 are arranged in a horizontal plane, and the unit section 2 is arranged between the two supports 1. The two supports 1 are arranged on both sides of the ladder cage, and the lower end of the unit section 2 at the middle position is detachably connected with the support 1 by bolts, and then unit sections 2 are continuously installed below this unit section 2 until they extend to the bottom of the foundation pit 6. By horizontally and spacedly arranging the two supports 1, the weight of the ladder cage can be effectively dispersed, and the stability of the structure is improved. In addition, as an alternative embodiment, the support 1 can also be a plurality of supports arranged in a horizontal plane in a longitudinal and transverse manner, and a plurality of supports 1 form a groove, and the unit section 2 is arranged in the groove.

[0031] As shown in Figure 1 In the present embodiment, the upper end surface of the support 1 is detachably provided with at least two connecting pieces 3 on both sides of the unit section 2, the connecting piece 3 is perpendicular to the support 1, the two connecting pieces 3 and the two supports 1 form an installation space of the unit section 2, and the four edges of the unit section 2 are connected with the connecting piece 3 and the support 1 respectively. The unit section 2 transmits the load to the support 1 through the connecting piece 3, so that the whole structure is more stable when bearing heavy load. The connecting mode of the unit section 2 and the support 1 adopts high-strength bolts, which ensures the firmness and reliability of the connection. In addition, as an alternative embodiment, the unit section 2 can also be directly connected with the support 1 through high-strength bolts.

[0032] Specifically, connector 3 is an I-beam, and bolts are provided on the upper end face of support 1. The bolts pass through the I-beam and are connected to nuts. Unit section 2 is connected to the I-beam by bolts.

[0033] like Figure 1 As shown, in this embodiment, several tie members are provided between the side end face of unit section 2 and the side end face of foundation pit 6. The tie members are existing tie members used to connect the wall of foundation pit 6 and unit section 2, thereby helping to resist lateral forces and prevent excessive structural displacement or collapse. Alternatively, as an alternative implementation, high-strength steel strands can also be used to connect unit section 2 and foundation pit 6.

[0034] like Figure 1 As shown, in this embodiment, the height of the support member 1 from the bottom of the foundation pit 6 is not less than the height of a single unit section 2. In this case, the height of the support member 1 is greater than the height of a single unit roll. That is, after the ladder cage is installed, at least one unit section 2 is provided between the bottom sections of the foundation pit 6. When the bottommost unit section 2 needs to be disassembled, only the unit sections 2 below the height of the support member 1 need to be disassembled; the units above the height of the support member 1 remain unchanged. After the foundation pit 6 base plate is installed, the bottommost unit section 2 can be reinstalled, thereby saving hoisting time and improving production efficiency. Alternatively, as an alternative implementation, the height of the support member 1 from the bottom of the base layer can also be lower than a single unit section 2. In this case, it can also be connected and fixed to the unit section 2 above the bottommost unit section 2 using the connector 3.

[0035] like Figure 1 As shown, in this embodiment, unit section 2 includes: a frame 4 and a pedestrian walkway disposed within the frame 4. The pedestrian walkway is used for pedestrian movement. The structure of the frame 4 and the installation method of the pedestrian walkway within the frame 4 are existing technologies and will not be described in detail in this embodiment. The frame 4 is used to fix the pedestrian walkway, which allows pedestrians to walk from the top to the bottom of the pit 6. By setting the frame 4, workers can be effectively protected from falling during construction. Multiple frames 4 can be fixed vertically with bolts, that is, the first frame 4 is fixed to the bottom of the pit 6, the next frame 4 is fixed to the top of the first frame 4 and connected to it with bolts, and so on, until the entire ladder cage is installed. In addition, as an alternative implementation, unit section 2 may also include: a protective fence, which is disposed around the frame 4 to prevent personnel from falling from the height.

[0036] like Figure 1As shown, in this embodiment, the pedestrian passage includes a staircase 5, which is arranged in a zigzag pattern within the frame 4. That is, the staircase 5 connects the top to the bottom in a zigzag pattern, which increases pedestrian safety. The connection method between the staircase 5 and the frame 4 is existing technology. Alternatively, as an alternative implementation, the pedestrian passage can also be a ladder extending from the top to the bottom.

[0037] like Figure 1 As shown, in this embodiment, the staircase 5 of the unit section 2 located at the bottom of the foundation pit 6 is detachably connected to the frame 4. That is, the staircase 5 between the lowest unit sections is connected to the frame 4 by bolts. When the bottom plate is installed at the bottom of the foundation pit 6, the staircase 5 can be disassembled to retain the frame 4 as the overall support. When installing the bottom plate at the bottom of the foundation pit 6, the staircase 5 can be easily disassembled while retaining the frame 4 as the overall support, avoiding the construction difficulties caused by traditional fixed connections. Alternatively, as an alternative implementation, the staircase 5 can also be fixedly connected to the frame 4. If the lowest unit section 2 is disassembled, the construction of the bottom plate of the foundation pit 6 can proceed smoothly.

[0038] like Figure 1 As shown, in this embodiment, the support members 1 are arranged in two rows at intervals along the height direction. That is, the entire ladder cage is effectively supported by two support members 1 at different heights, ensuring the stability of the ladder cage in the vertical direction. The upper unit section 2 is connected by two angle steels, and the lower unit section 2 is fixed by two connectors 3 on the support member 1. Thus, the load is unloaded by the two support members 1 at different heights, reducing the requirements of the vertical ladder cage on the foundation. This achieves the requirement of not constructing a reinforced concrete foundation for the ladder cage and unloading the bottom I-beam, reducing the cost of construction measures. In addition, as an alternative implementation, multiple support members 1 can also be arranged at intervals along the height, such as three or four.

[0039] Specifically, the first row of support members 1 at the top is the first inner support beam, and the second row of support members 1 at the bottom is the second inner support beam. By placing the vertical ladder cage at the middle position in the height direction on the I-beams at both ends of the second inner support beam, the load is unloaded through the second inner support beam at both ends.

[0040] Construction process of vertical ladder cages:

[0041] (1) Both sides of the unit section 2 are connected by steel square tubes on the upper support member 1 to ensure that the welding length reaches 150mm and the weld is 8mm.

[0042] (2) Clean the fixing screw holes of unit section 2 to ensure that the screw holes match the bolt diameter, install unit section 2 on the ground, and assemble the three installed unit sections 2 as a whole.

[0043] (3) the three unit sections 2 are hoisted as a whole, hoisted by a tower crane, and the walking direction of the steps in the unit section 2 of the stair 5 is made consistent with the walking direction of the steps of the exit section during hoisting. After the unit section 2 is hoisted into position, the bolts are installed and made loose, so as to facilitate correction and installation. After correction, all the bolts are fastened. The unit section 2 is hoisted to the predetermined position, and the horizontal tie member that has been placed is tightly fitted to the ladder cage. The horizontal tie member is fixed to the support member 1 by M20 expansion bolts;

[0044] (4) the steps (1) to (3) are repeated until the last unit section 2 is installed;

[0045] (5) at least two horizontal tie members are installed on each support member 1;

[0046] (6) the corrugated steel plate is installed as the stair 5 step of the upper and lower passageway.

[0047] (7) the 40mm*40mm square tube, steel pipe or φ18 steel bar head is used to tightly connect with the frame 4 by welding for grounding treatment. The ramming depth in the ground should not be less than 1500mm.

[0048] The installation mode of the vertical ladder cage connecting structure for the foundation pit 6: the support member 1 is arranged in the foundation pit 6, the support member 1 is the first inner support beam and the second inner support beam, the unit section 2 is connected with the second inner support beam at the middle position in the height direction by the connecting member 3, and the connecting member 3 is an I-beam. The stair 5 of the last unit section 2 is detachably connected with the frame 4. Specifically, the stair 5 is connected with the frame 4 by bolts.

[0049] The working principle of the vertical ladder cage connecting structure for the foundation pit 6: the vertical ladder cage is from the unit section 2 at the lower part of the second inner support beam, the frame 4 is detachably connected with the stair 5, and the stair 5 serves as the upper and lower passageway. At this time, the stair 5 can be temporarily detached during the bottom plate process, without affecting the bottom plate construction. When the basement main body is constructed, the entire vertical ladder cage does not need to be converted in position, so as to realize the reduction of hoisting and conversion times, the reduction of the use of the tower crane or the automobile crane and the labor installation cost.

[0050] Obviously, the above embodiments are only examples for clearly illustrating, but not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. All the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A vertical ladder cage connection structure for foundation pits, characterized in that, include: A number of unit sections (2) are installed in the vertical direction to form a ladder cage, and two adjacent unit sections (2) are detachably connected; At least one support member (1) is horizontally arranged in the foundation pit (6), the height of the support member (1) is higher than the bottom of the foundation pit (6), and at least one unit section (2) adjacent to the support member (1) is detachably connected to the support member (1).

2. The vertical ladder cage connection structure for foundation pits according to claim 1, characterized in that, The support member (1) has two parallel and spaced-apart members, and the unit section (2) is installed between the two support members (1).

3. The vertical ladder cage connection structure for foundation pits according to claim 2, characterized in that, The upper end face of the support member (1) is detachably provided with at least two connectors (3) on both sides of the unit section (2). The connectors (3) are perpendicular to the support member (1), and the unit section (2) is detachably connected to the connectors (3).

4. The vertical ladder cage connection structure for foundation pits according to any one of claims 1-3, characterized in that, Several tie members are provided between the side end face of the unit section (2) and the side end face of the foundation pit (6).

5. The vertical ladder cage connection structure for foundation pits according to any one of claims 1-3, characterized in that, The height of the support member (1) to the bottom of the pit (6) is not less than the height of a single unit section (2).

6. The vertical ladder cage connection structure for foundation pits according to any one of claims 1-3, characterized in that, The unit section (2) includes: a frame (4) and a pedestrian passage disposed within the frame (4), the pedestrian passage being used for people to walk.

7. The vertical ladder cage connection structure for foundation pits according to claim 6, characterized in that, The pedestrian passage includes a staircase (5), which is arranged in a zigzag pattern within the frame (4).

8. The vertical ladder cage connection structure for foundation pits according to claim 7, characterized in that, The staircase (5) of the unit section (2) located at the bottom of the foundation pit (6) is detachably connected to the frame (4).

9. The vertical ladder cage connection structure for foundation pits according to any one of claims 1-3, characterized in that, The support member (1) is arranged in two rows at intervals along the height direction.

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