Supporting tool for diaphragm wall construction

Abstract

The utility model provides a kind of for underground continuous wall guide wall construction and supports tool, comprising: two vertical support rods, each other symmetrical setting and height and with the height of guide wall are adapted;First cross bar is set to the circumference of one the vertical support rod;Second cross bar is set to the circumference of another the vertical support rod, and can be set in the first cross bar, along the axial movement of the first cross bar;Locking member is in the axial movement of second cross bar along the first cross bar, to the transverse distance between the two vertical support rods reaches first target support interval L1, the locking member penetrates first cross bar, and axial location is formed to first cross bar and second cross bar, and the first target support interval L1 is the interval of a pair of guide wall.Locking member realizes interval locking, easy to operate, without complex tool, single person can complete installation.The overall structure replaces traditional support combination, simplifies construction procedure, and installation time is greatly shortened, and construction efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a support tool for the construction of underground continuous wall guide walls. Background Technology

[0002] In the construction of diaphragm walls in building engineering, the guide wall is a key structure for controlling trenching accuracy, retaining soil, and storing grout; its construction quality directly affects the subsequent construction effect of the diaphragm wall. During the construction of the guide wall, a formwork support system is needed to ensure its forming accuracy and prevent problems such as formwork deformation and displacement during concrete pouring.

[0003] Currently, the industry generally adopts the traditional support system of "formwork + back bracing + steel pipe bracing". This system has many significant drawbacks: First, the construction process is complicated. It is necessary to first build the formwork, then install the back bracing for reinforcement, and finally fix it by cross bracing with multiple steel pipes. Each step requires repeated adjustment and calibration, which is time-consuming and labor-intensive. Second, the labor cost is high. The installation and dismantling of the entire support system requires 4-6 workers to work together, and the installation time for a single support can be as long as 2-3 hours, which is inefficient. Utility Model Content

[0004] The main purpose of this utility model is to provide a support tool for the construction of underground continuous wall guide walls, so as to solve the technical problems of cumbersome construction procedures, high labor costs, and troublesome installation and dismantling of traditional support systems.

[0005] To achieve the above objectives, this utility model provides a bracing tool for the construction of underground diaphragm wall guide walls, comprising:

[0006] Two vertical support rods are symmetrically arranged and their height is adapted to the height of the guide wall.

[0007] The first horizontal bar is disposed circumferentially on the vertical support bar.

[0008] The second crossbar is disposed circumferentially on the other vertical support bar and can be sleeved inside the first crossbar, moving along the axial direction of the first crossbar.

[0009] The locking member moves along the axial direction of the second crossbar along the first crossbar until the lateral distance between the two vertical support rods reaches the first target support spacing L1. At this point, the locking member penetrates the first crossbar and axially limits the first and second crossbars. The first target support spacing L1 is the interval between a pair of guide walls.

[0010] According to an embodiment of this application, the locking member is an elastic steel clip. The locking member is disposed on the circumferential wall of the second crossbar. The circumferential wall of the first crossbar is provided with a locking hole that mates with the locking member.

[0011] According to an embodiment of this application, the number of locking members is multiple, and they are evenly distributed along the axial direction of the second crossbar at a first interval distance l.

[0012] The number of locking holes is multiple, and they are evenly distributed along the axial direction of the first crossbar at a first interval distance l.

[0013] According to an embodiment of this application, the number of locking holes is greater than or equal to the number of locking elements.

[0014] According to an embodiment of this application, the first interval distance l satisfies the following condition:

[0015] The first interval distance l = (second target support spacing L2 - first target support spacing L1) / n. Wherein, the second target support spacing L2 is the spacing of another pair of guide walls, and n is 1 or 2.

[0016] According to an embodiment of this application, when the lateral distance between the two vertical support rods reaches the first target support spacing L1 or the second target support spacing L2, the length of the overlapping portion between the first crossbar and the second crossbar is more than 40% of the length of the first crossbar.

[0017] According to the embodiments of this application, there are multiple first crossbars and multiple second crossbars, which are arranged in a one-to-one correspondence.

[0018] Multiple first crossbars are evenly spaced along the axial direction of the vertical support rod. Multiple second crossbars are evenly spaced along the axial direction of the vertical support rod.

[0019] According to an embodiment of this application, the vertical support rod is a square steel pipe. Both the first and second horizontal bars are circular steel pipes.

[0020] According to an embodiment of this application, the diameter difference between the first crossbar and the second crossbar is 4 to 8 mm.

[0021] According to the embodiments of this application, the square steel pipe is a 50*50*3 square steel pipe, the first crossbar is a φ32 steel pipe, and the second crossbar is a φ25 steel pipe.

[0022] In the aforementioned bracing tool for diaphragm wall guide wall construction, the vertical support rods are adapted to the height of the guide wall, ensuring that the support covers the entire height of the guide wall and preventing local deformation. The nested telescopic design of the first and second horizontal bars allows for quick adjustment of the support spacing to accommodate different guide wall intervals. Locking devices lock the spacing, making operation simple and requiring no complex tools; installation can be completed by a single person. The integrated structure replaces traditional support combinations, simplifying construction procedures, significantly reducing installation time, and greatly improving construction efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a top view of the use state of a bracing tool for the construction of a diaphragm wall guide wall according to an embodiment of this application.

[0025] Figure 2 This is a side view of the use state of a bracing tool for the construction of a diaphragm wall guide wall according to an embodiment of this application.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings.

[0027] 100. Vertical support rod; 200. First horizontal bar; 300. Second horizontal bar; 400. Locking device; 500. Template; 600. Guide wall. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model provides a bracing tool for the construction of underground continuous wall guide walls, see [link to relevant documentation]. Figure 1 and Figure 2 The system includes two vertical support rods 100, a first horizontal bar 200, a second horizontal bar 300, and a locking member 400. The two vertical support rods 100 are symmetrically arranged and their heights are adapted to the height of the guide wall 600. The first horizontal bar 200 is disposed circumferentially around one of the vertical support rods 100. The second horizontal bar 300 is disposed circumferentially around the other vertical support rod 100 and can be fitted inside the first horizontal bar 200, moving axially along the first horizontal bar 200. The locking member 400 moves axially along the second horizontal bar 300 until the lateral distance between the two vertical support rods 100 reaches a first target support spacing L1. At this point, the locking member 400 penetrates the first horizontal bar 200, axially limiting the first horizontal bar 200 and the second horizontal bar 300. The first target support spacing L1 is the interval between a pair of guide walls 600.

[0033] In this embodiment, the vertical support rod 100 is arranged along the height direction of the guide wall 600 to fit against the template 500 on the outside of the guide wall 600, provide vertical support force, and prevent the guide wall 600 from deforming vertically.

[0034] The first horizontal bar 200 and the second horizontal bar 300 are rod-shaped structures that horizontally connect two vertical support bars 100. They achieve length extension and contraction through nesting and are the core components that provide lateral support for the guide wall 600. The target support spacing L1 is the lateral support distance determined according to the design interval of the guide wall 600 to be constructed, that is, the preset spacing between the two vertical support bars 100.

[0035] The locking component 400 is used to fix the relative positions of the first crossbar 200 and the second crossbar 300, preventing them from sliding relative to each other during the support process and ensuring the stability of the support spacing. The locking component 400 can be an elastic steel clip, a bolt locking component 400, or a pin locking component 400.

[0036] In the aforementioned bracing tool for diaphragm wall guide wall construction, the vertical support rod 100 is height-matched to the guide wall 600, ensuring that the support covers the full height of the guide wall 600 and preventing local deformation. The nested telescopic design of the first horizontal bar 200 and the second horizontal bar 300 allows for quick adjustment of the support spacing to accommodate different guide wall 600 intervals. The locking component 400 locks the spacing, making operation simple and requiring no complex tools; installation can be completed by a single person. The overall structure replaces traditional support combinations, simplifying construction procedures, significantly reducing installation time, and greatly improving construction efficiency.

[0037] In some embodiments, the locking member 400 is an elastic steel clip. The locking member 400 is disposed on the circumferential wall of the second crossbar 300. The circumferential wall of the first crossbar 200 is provided with a locking hole that mates with the locking member 400.

[0038] Elastic steel clips are made of elastic steel and have a certain degree of elasticity. They contract when compressed and pop out when uncompressed, achieving a quick locking and unlocking mechanism. Elastic steel clips can be made of stainless steel (e.g., 2-3mm thick, 5-8mm pop-out height) or have a built-in small spring for enhanced elasticity.

[0039] The locking hole is formed on the wall of the first crossbar 200, and is adapted to the size of the elastic steel clip. It allows the steel clip to be inserted after it pops out, forming an axially limiting hole structure. The locking hole can be a circular hole (diameter 6-10mm, adapted to the size of the steel clip) or a square hole (side length 5-8mm, to prevent the steel clip from rotating).

[0040] The flexible steel clip has a simple structure and low cost. It does not require additional locking tools and automatically locks by squeezing and popping out when the crossbar extends or retracts, making it easy to operate. The locking hole and the steel clip fit precisely, and the locking is highly stable and can effectively resist the lateral pressure during concrete pouring, preventing the crossbar from sliding. To unlock, simply press the steel clip to extend or retract the crossbar. The disassembly efficiency is high, avoiding the cumbersome disassembly problem of traditional bolt locking.

[0041] In some embodiments, see Figure 2 The number of locking members 400 is multiple, and they are evenly distributed along the axial direction of the second crossbar 300 at a first interval distance l. The number of locking holes is multiple, and they are evenly distributed along the axial direction of the first crossbar 200 at a first interval distance l.

[0042] The uniform distribution of multiple locking elements 400 and locking holes refers to setting multiple sets of locking structures at fixed intervals along the axial direction of the crossbar to achieve multi-level adjustment of the support spacing and adapt to different guide wall 600 interval requirements.

[0043] For example, three sets of locking elements 400 or five sets of locking elements 400 can be set, with the number of corresponding locking holes and their distribution spacing being consistent. The first interval distance l can be 5cm, 10cm, or 15cm to adapt to different guide wall 600 spacing adjustment accuracies.

[0044] The multi-position locking structure allows the tool to be flexibly adapted to various guide wall 600 intervals (such as 60cm, 70cm, 80cm, etc.), making it highly versatile and eliminating the need to customize tools for different guide wall 600 intervals; the even distribution ensures that the crossbar is subjected to uniform force and consistent support stability after different positions are locked; it improves tool turnover efficiency and reduces construction costs.

[0045] In some embodiments, the number of locking holes is greater than or equal to the number of locking members 400.

[0046] This requirement stipulates that the number of locking holes must be no less than that of the locking components 400, ensuring that all locking components 400 can find a corresponding locking hole for locking, while also reserving additional locking holes to improve the flexibility of spacing adjustment. For example, if there are 3 sets of locking components 400, the locking holes can be set to 3 sets (perfectly matched) or 5 sets (with 2 sets of adjustment space reserved).

[0047] This avoids the locking component 400 failing to lock due to insufficient number of locking holes, ensuring the reliability of support spacing adjustment; the reserved locking holes can adapt to different guide wall 600 spacing requirements in the future, improving the tool's service life and applicability; it reduces the impact of processing errors, and even if there is a slight deviation in the installation of the locking component 400, it can still be locked through adjacent locking holes.

[0048] In some embodiments, the first interval distance l satisfies the following condition:

[0049] The first interval distance l = (second target support spacing L2 - first target support spacing L1) / n. Wherein, the second target support spacing L2 is the spacing of another pair of guide walls 600, and n is 1 or 2.

[0050] In this embodiment, the quantitative design of the locking element 400 / locking hole spacing distance is associated with two common guide wall 600 spacings (L1, L2) to ensure that the tool can accurately adapt to these two core spacings and simplify the adjustment logic.

[0051] If L1 = 60cm, L2 = 80cm, and n = 2, then l = (80-60) / 2 = 10cm. For example, if 5 sets of locking parts 400 are set, when the locking parts 400 are matched with different locking holes, they can be adapted to three spacing levels of 60cm, 70cm, and 80cm.

[0052] If L1 = 70cm, L2 = 80cm, and n = 1, then l = 10cm. For example, if 5 sets of locking parts 400 are set, when the locking parts 400 are matched with different locking holes, they can be adapted to two spacing levels of 70cm and 80cm.

[0053] The quantitative interval design allows the tool to be specifically adapted to the two common guide wall 600 spacings in engineering. It can be quickly adjusted without complicated calculations, improving construction efficiency. The setting of n=1 or 2 balances the adjustment accuracy and structural complexity, avoiding the problem that the 400 locking parts are too dense due to the interval being too small (increasing processing costs) or too large, resulting in insufficient adaptability.

[0054] In some embodiments, when the lateral distance between the two vertical support rods 100 reaches the first target support spacing L1 or the second target support spacing L2, the length of the overlapping portion between the first crossbar 200 and the second crossbar 300 is more than 40% of the length of the first crossbar 200.

[0055] The length of the overlapping portion refers to the length of the nested fit between the first crossbar 200 and the second crossbar 300. This length accounts for more than 40% of the length of the first crossbar 200 to ensure the connection strength between the two and to prevent the crossbar from bending or detaching due to insufficient overlap during support.

[0056] Sufficient overlap length ensures the strength of the crossbar connection, can withstand the lateral pressure during concrete pouring, prevents the crossbar from bending, deforming or detaching, and ensures the stability of the support; avoids tool failure due to insufficient overlap, and reduces construction safety hazards; and a unified overlap ratio standard ensures consistent structural strength when supporting different levels.

[0057] In some embodiments, see Figure 2 There are multiple first crossbars 200 and multiple second crossbars 300, which are set one-to-one.

[0058] A plurality of first crossbars 200 are distributed at equal intervals along the axial direction of the vertical support rod 100. A plurality of second crossbars 300 are distributed at equal intervals along the axial direction of the vertical support rod 100.

[0059] Multiple horizontal bars evenly distributed vertically refer to setting multiple sets of transverse supports on the vertical support rod 100 to achieve multi-point support along the height of the guide wall 600, avoiding excessive local stress that could lead to deformation. For example, three sets of horizontal bar groups can be set. Each horizontal bar group includes a cooperating first horizontal bar 200 and a second horizontal bar 300.

[0060] Multi-point support ensures uniform force distribution along the height of the guide wall 600, avoiding localized deformation caused by traditional single crossbar support and improving the forming accuracy of the guide wall 600; the equidistant distribution conforms to mechanical design principles, maximizing support efficiency; it is adaptable to guide walls 600 of different heights, and can be adjusted by increasing or decreasing the number of crossbars, further enhancing its versatility.

[0061] In some embodiments, see Figure 2 The vertical support rod 100 is a square steel tube. The first horizontal bar 200 and the second horizontal bar 300 are both circular steel tubes.

[0062] Square steel pipes have a large moment of inertia and good resistance to bending and torsion. As a vertical support rod, they can stably withstand lateral pressure and are not easily deformed. Circular steel pipes have a smooth surface, resulting in low friction when nested, smooth expansion and contraction adjustment, and reduced operation difficulty.

[0063] In some embodiments, the diameter difference between the first crossbar 200 and the second crossbar 300 is 4 to 8 mm.

[0064] The reasonable diameter difference allows the second crossbar 300 to extend and retract flexibly within the first crossbar 200 without radial swaying due to excessive gaps, ensuring that the crossbar axis is aligned and the force is evenly distributed during support; it avoids the extension and retraction jamming caused by too small a diameter difference, or the structural instability caused by too large a diameter difference, thus balancing the ease of operation and the reliability of support.

[0065] In some embodiments, see Figure 2 The square steel pipe is a 50*50*3 square steel pipe, the first crossbar 200 is a φ32 steel pipe, and the second crossbar 300 is a φ25 steel pipe.

[0066] In some embodiments, when not in use, the second horizontal bar 300 can be extended to the bottom of the first horizontal bar 200 for easy placement and transportation. Before the on-site construction of the guide wall 600, the length of the vertical support rods 100 at both ends, the number of the first horizontal bar 200 and the second horizontal bar 300, and their arrangement spacing are customized according to the depth of the guide wall 600 as required by the design. According to the thickness of the ground wall, the corresponding width is adjusted by the first horizontal bar 200 and the second horizontal bar 300 to tighten the templates 500 at both ends. The spacing of the adjustable template 500 support tools is determined according to the actual construction conditions on site to ensure that no formwork bursts during the pouring process. The main construction period is reduced by the tool manufacturing cycle, which avoids the cumbersome construction process in the original guide wall 600 construction process, which involves first setting up the template 500, constructing double steel pipe back ribs, using bracing to support the steel pipe back ribs on both sides, and then tightening the bracing rods; effectively reducing the on-site construction period and labor costs.

[0067] The above technical solutions of this utility model are merely preferred embodiments and do not limit the patent scope of this utility model. All equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.

Claims

1. A bracing tool for constructing a guide wall for underground diaphragm walls, characterized in that, include: Two vertical support rods are symmetrically arranged and their height is adapted to the height of the guide wall; The first horizontal bar is disposed around the circumference of the vertical support bar; The second crossbar is disposed circumferentially on the other vertical support bar and can be sleeved inside the first crossbar and move along the axial direction of the first crossbar. The locking member moves along the axial direction of the second crossbar along the first crossbar until the lateral distance between the two vertical support rods reaches the first target support spacing L1. At this point, the locking member penetrates the first crossbar and axially limits the first and second crossbars. The first target support spacing L1 is the interval between a pair of guide walls.

2. The bracing tool for diaphragm wall construction according to claim 1, characterized in that, The locking element is an elastic steel clip; the locking element is disposed on the circumferential wall of the second crossbar; the circumferential wall of the first crossbar is provided with a locking hole that cooperates with the locking element.

3. The bracing tool for diaphragm wall construction according to claim 1, characterized in that, The number of locking components is multiple, and they are evenly distributed along the axial direction of the second crossbar at a first interval distance l. The number of locking holes is multiple, and they are evenly distributed along the axial direction of the first crossbar at a first interval distance l.

4. The bracing tool for diaphragm wall guide wall construction according to claim 3, characterized in that, The number of locking holes is greater than or equal to the number of locking elements.

5. The bracing tool for diaphragm wall guide wall construction according to claim 4, characterized in that, The first interval distance l satisfies the following condition: The first interval distance l = (second target support spacing L2 - first target support spacing L1) / n; where the second target support spacing L2 is the spacing of another pair of guide walls, and n is 1 or 2.

6. The bracing tool for diaphragm wall guide wall construction according to claim 5, characterized in that, When the lateral distance between the two vertical support rods reaches the first target support spacing L1 or the second target support spacing L2, the length of the overlapping portion between the first crossbar and the second crossbar is more than 40% of the length of the first crossbar.

7. The bracing tool for diaphragm wall guide wall construction according to claim 5, characterized in that, There are multiple first and second crossbars, arranged in a one-to-one correspondence; Multiple first crossbars are distributed at equal intervals along the axial direction of the vertical support rod; multiple second crossbars are distributed at equal intervals along the axial direction of the vertical support rod.

8. The bracing tool for constructing a diaphragm wall guide wall according to any one of claims 1 to 7, characterized in that, The vertical support rod is a square steel pipe; the first horizontal bar and the second horizontal bar are both round steel pipes.

9. The bracing tool for diaphragm wall guide wall construction according to claim 8, characterized in that, The diameter difference between the first crossbar and the second crossbar is 4 to 8 mm.

10. The bracing tool for diaphragm wall guide wall construction according to claim 9, characterized in that, The square steel pipe is a 50*50*3 square steel pipe, the first crossbar is a φ32 steel pipe, and the second crossbar is a φ25 steel pipe.

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