Water-cooling support for preventing tunnel lining from cracking

Abstract

The utility model discloses a water-cooling support for preventing tunnel lining cracks, which comprises water-cooling support plates, reinforcing plates are arranged on the inner sides of the water-cooling support plates, the number of the water-cooling support plates is two, and a support framework is arranged between the reinforcing plates on the two sides. The device can accelerate the cooling speed inside the concrete, reduce the speed difference of cooling inside and outside the concrete, and prevent cracks caused by different thermal expansion degrees inside and outside the concrete.

Description

Technical Field

[0001] The utility model relates to a water-cooling support for preventing tunnel lining cracks. Background Art

[0002] With the continuous increase in tunnel projects, the problem of tunnel lining cracks has become increasingly prominent. As a permanent structure that supports and maintains the long-term stability and durability of tunnels, the stability and durability of tunnel linings are crucial to ensuring traffic safety and improving operational efficiency.

[0003] Currently, tunnel lining construction primarily utilizes methods such as shotcrete support and reinforced concrete lining. However, due to the special properties of the second-phase lining, thermal stress is one of the main causes of lining cracks. Furthermore, the arched lining structure is also prone to cracks due to stress concentration.

[0004] Based on the above problems, we designed a water-cooled support that can provide water-assisted cooling, narrow the cooling rate difference between the inside and outside of the concrete, reduce cracking, and prevent cracks in the tunnel lining. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a water-cooled support which can perform water-cooling auxiliary cooling, reduce the cooling rate difference between the inside and outside of the concrete, reduce cracking and prevent cracks in the tunnel lining.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A water-cooled support for preventing cracks in tunnel linings comprises a water-cooled support plate, a reinforcing plate is provided on the inner side of the water-cooled support plate, two water-cooled support plates are symmetrically provided, and a support frame is installed between the reinforcing plates on both sides.

[0008] Preferably, the water-cooling support plate includes a base plate and a cover plate, the base plate has an inner cavity, the cover plate covers the top of the base plate and closes the inner cavity, a connecting pipe is provided at the bottom of the base plate, the connecting pipe is connected to the inner cavity, there are four or more connecting pipes, respectively close to the front and rear end faces of the cover plate, the reinforcing plate is welded to the inner arc surface of the cover plate, and a through hole corresponding to the connecting pipe is provided on the plate surface of the reinforcing plate; a grouting pipe is provided at the bottom of the base plate, and the grouting pipe passes through the cover plate upward.

[0009] Preferably, sockets are provided on the front and rear end surfaces of the reinforcing plate.

[0010] Preferably, a rib plate is provided inside the bottom plate, and the rib plates are provided in plurality. The plurality of rib plates are vertically staggered, and the inner cavity is separated by the rib plates to form a plurality of water cavities, and water holes connecting the water cavities are provided on the plate surface of the rib plate.

[0011] Preferably, the support frame includes two vertically arranged support beams and a connecting plate connected between the support beams on both sides, and the support beams cooperate with the reinforcing plate.

[0012] Preferably, a slot for inserting the reinforcing plate is provided at the top of the support beam, the bottom of the slot fits into the lower surface of the reinforcing plate, and screws for fixing the reinforcing plate are screwed into the outside of the support beam; bolts are provided at positions near the top of the front and rear end surfaces of the support beam, and a connecting slot is provided horizontally on the plate surface of the connecting plate. Two connecting plates are provided at the front and rear, and the bolt is fitted with a nut after passing through the connecting slot. A first bolt is fitted between the front and rear connecting plates through the connecting slot.

[0013] Preferably, a ground-inserting rod is provided at the bottom of the support beam, and an inserting portion is provided at the upper end of the ground-inserting rod. The inserting portion is inserted upward into the support beam, and a second bolt is fitted between the inserting portion and the support beam 301.

[0014] Preferably, protrusions are evenly distributed on the outer surface of the cover plate, and the interiors of the protrusions are hollow and communicated with the inner cavity.

[0015] Preferably, the protrusion is truncated cone-shaped.

[0016] The beneficial effects of the utility model are:

[0017] The device can accelerate the cooling speed inside the concrete, reduce the cooling rate difference between the inside and outside of the concrete, and prevent cracks caused by the different degrees of thermal expansion inside and outside the concrete.

[0018] The device can reduce the temperature change inside the concrete and further improve the concrete's heat preservation and crack prevention capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is the enlarged view of point A;

[0022] Figure 3 It is a partial cross-sectional view at point B;

[0023] Figure 4 is a three-dimensional diagram of the base plate;

[0024] Figure 5 This is the main view of the supporting skeleton;

[0025] Figure 6 A perspective view of the support beam;

[0026] Figure 7 This is a three-dimensional diagram of a ground-inserted rod. DETAILED DESCRIPTION

[0027] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0028] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0029] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In addition, in the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this utility model, unless otherwise specified or limited, the terms "disposed," "socketed," "connected," "through," and "inserted" should be understood in a broad sense. For example, they can refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] See Figure 1The water-cooled support for preventing cracks in tunnel lining shown includes a water-cooled support plate 1, a reinforcing plate 2 is provided on the inner side of the water-cooled support plate 1, two water-cooled support plates 1 are symmetrically provided, and a support frame 3 is installed between the reinforcing plates 2 on both sides.

[0033] In the above technical solution, water can be passed through the water-cooled support plate 1 to cool the water-cooled support plate 1, so that the poured concrete is cooled, the cooling speed of the concrete is accelerated, the difference in cooling rate inside and outside the concrete is reduced, and cracks caused by the different degrees of thermal expansion inside and outside the concrete are prevented.

[0034] 1. Clean the impurities adhering to the inner wall of the tunnel, build the water-cooling support plate, and support the water-cooling support plate 1 through the support frame 3;

[0035] 2. Grout concrete between the water-cooled support and the inner wall of the tunnel so that the concrete is evenly filled between the inner wall of the tunnel and the water-cooled support. After the grouting is completed, cool water is introduced into the water-cooled support to cool the concrete.

[0036] See Figure 3 and Figure 4 As shown, the water-cooling support plate 1 includes a base plate 101 and a cover plate 102. The base plate 101 has an inner cavity 103. The cover plate 102 covers the top of the base plate 101 and closes the inner cavity 103. A connecting pipe 104 is provided at the bottom of the base plate 101. The connecting pipe 104 is connected to the inner cavity 103. There are more than four connecting pipes 104, which are respectively close to the front and rear end surfaces of the cover plate 102. The reinforcing plate 2 is welded to the inner curved surface of the cover plate 102. A through hole 201 corresponding to the connecting pipe 104 is provided on the plate surface of the reinforcing plate 2; a grouting pipe 121 is provided at the bottom of the base plate 101, and the grouting pipe 121 passes through the cover plate 102 upward.

[0037] In the above technical solution, the bottom plate 101 and the cover plate 102 are matched to make the whole of the water-cooling support plate 1 easier to manufacture, and concrete slurry is poured through the grouting pipe 121.

[0038] See Figure 2 As shown, sockets 202 are provided on the front and rear end surfaces of the reinforcing plate 2 .

[0039] The socket 202 can be inserted into a scaffolding pole, so that the front and rear adjacent water-cooling support plates 1 are connected to form a whole, reducing cracks and reducing slurry leakage.

[0040] See Figure 4As shown in the bottom plate 101 inside the setting of the rib plate 111, the rib plate 111 is provided with a plurality of, a plurality of the rib plate 111 is vertically staggered, through the inner cavity 103 through the rib plate 111 is divided into a plurality of water cavity 133, the rib plate 111 on the surface of the water cavity 133 is provided with a water hole 112.

[0041] In the above technical solution, the rib plate 111 can increase the support of the cover plate 102, and reduce the deformation after bearing pressure.

[0042] Referring to Figure 5 and Figure 6 As shown, the support framework 3 includes two vertical support beams 301 and a connecting plate 302 connected between the two support beams 301, and the support beams 301 cooperate with the reinforcing plate 2.

[0043] In the above technical solution, the combination of support beams 301 and connecting plates 302 facilitates the erection and disassembly in the tunnel.

[0044] Referring to Figure 5 , Figure 6 and Figure 7 As shown, the top of the support beam 301 is provided with a clamping groove 331 clamping the reinforcing plate 2, the bottom of the clamping groove 331 is matched with the lower surface of the reinforcing plate 2, and the outside of the support beam 301 is screwed with a screw 332 for fixing the reinforcing plate 2; The screw 333 is arranged at the position close to the top of the front and rear end faces of the support beam 301, the connecting groove 334 is arranged transversely on the surface of the connecting plate 302, the connecting plate 302 is provided with two plates in front and rear, the nut 335 is matched with the screw 333 after passing through the connecting groove 334, and the first screw 336 is matched between the front and rear connecting plates 302 through the connecting groove 334.

[0045] In the above technical solution, the combination is facilitated, the reinforcing plate 2 is matched with the clamping groove 331, the reinforcing plate 2 is limited, the position of the water-cooled support plate 1 is more stable, especially when pouring concrete, the displacement of the water-cooled support plate is avoided.

[0046] Referring to Figure 6 and Figure 7 As shown, the bottom of the support beam 301 is provided with an earth insertion rod 337, the upper end of the earth insertion rod 337 is provided with an insertion part 338, the insertion part 338 is inserted into the support beam 301, and the second screw 339 is matched between the insertion part 338 and the support beam 301.

[0047] For the unhardened ground, anchor holes can be opened on the ground, and the earth insertion rod 337 is inserted to increase the stability of the bottom of the support beam 301.

[0048] See Figure 3 As shown, protrusions 122 are evenly distributed on the outer surface of the cover plate 102 . The interior of the protrusions 122 is hollow and communicates with the inner cavity 103 .

[0049] The protrusion 122 is in a truncated cone shape.

[0050] In the above technical solution, evenly distributed pits can be formed by the protrusions 122 after the concrete is poured and dried, which facilitates the attachment of the cement mortar layer during the subsequent construction of the cement mortar layer.

[0051] At the same time, the protrusion 122 can be inserted into the poured concrete layer to increase the cooling effect.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0056] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water-cooled support for preventing tunnel lining cracks, characterized by: It comprises a water-cooling support plate (1), a reinforcing plate (2) is provided on the inner side of the water-cooling support plate (1), two water-cooling support plates (1) are symmetrically provided, and a support frame (3) is installed between the reinforcing plates (2) on both sides.

2. The water-cooled support for preventing tunnel lining cracks according to claim 1 is characterized in that: The water-cooling support plate (1) comprises a base plate (101) and a cover plate (102); the base plate (101) has an inner cavity (103); the cover plate (102) covers the top of the base plate (101) and closes the inner cavity (103); a connecting pipe (104) is provided at the bottom of the base plate (101); the connecting pipe (104) is connected to the inner cavity (103); four or more connecting pipes (104) are provided, and are respectively close to the front and rear end surfaces of the cover plate (102); the reinforcing plate (2) is welded to the inner arc surface of the cover plate (102); a through hole (201) corresponding to the connecting pipe (104) is provided on the plate surface of the reinforcing plate (2); and a grouting pipe (121) is provided at the bottom of the base plate (101); the grouting pipe (121) passes through the cover plate (102) upward.

3. The water-cooled support for preventing tunnel lining cracks according to claim 2 is characterized in that: Sockets (202) are provided on the front and rear end surfaces of the reinforcing plate (2).

4. The water-cooled support for preventing tunnel lining cracks according to claim 2 is characterized in that: A rib plate (111) is provided inside the bottom plate (101), and the rib plates (111) are provided in plurality. The plurality of rib plates (111) are vertically staggered, and the inner cavity (103) is separated by the rib plates (111) to form a plurality of water cavities (133). Water holes (112) communicating with the water cavities (133) are provided on the plate surface of the rib plates (111).

5. The water-cooled support for preventing tunnel lining cracks according to claim 1 is characterized in that: The support frame (3) comprises two vertically arranged support beams (301) and a connecting plate (302) connected between the support beams (301) on both sides, and the support beams (301) cooperate with the reinforcing plate (2).

6. The water-cooled support for preventing tunnel lining cracks according to claim 5 is characterized in that: The top of the support beam (301) is provided with a slot (331) for inserting into the reinforcing plate (2), the bottom of the slot (331) fits into the lower surface of the reinforcing plate (2), and a screw (332) for fixing the reinforcing plate (2) is screwed into the outside of the support beam (301); bolts (333) are provided at positions near the top of the front and rear end surfaces of the support beam (301), and a connecting slot (334) is transversely provided on the plate surface of the connecting plate (302). Two connecting plates (302) are provided at the front and rear ends, and the bolts (333) are fitted with nuts (335) after passing through the connecting slots (334). A first bolt (336) is fitted between the front and rear connecting plates (302) through the connecting slots (334).

7. The water-cooled support for preventing tunnel lining cracks according to claim 6 is characterized in that: A ground-inserting rod (337) is provided at the bottom of the support beam (301), an inserting portion (338) is provided at the upper end of the ground-inserting rod (337), the inserting portion (338) is inserted upward into the support beam (301), and a second bolt (339) is engaged between the inserting portion (338) and the support beam (301).

8. The water-cooled support for preventing tunnel lining cracks according to claim 2 is characterized in that: Protrusions (122) are evenly distributed on the outer surface of the cover plate (102), and the interior of the protrusions (122) is hollow and communicates with the inner cavity (103).

9. The water-cooled support for preventing tunnel lining cracks according to claim 8, characterized in that: The protrusion (122) is in the shape of a truncated cone.

Images