Double anchor rod embedded channel and construction method thereof

Abstract

The present invention relates to a double-anchor pre-buried channel and a construction method thereof, comprising: a channel and an anchor assembly, wherein two anchor assemblies are respectively connected to both sides of the channel. The double-anchor pre-buried channel and the construction method thereof provided by the present invention address the defect of uneven force in traditional single-anchor pre-buried channels, and small-sized anchors are provided on both sides of the channel to achieve uniform load distribution, which is conducive to improving the overall strength; address the defect that the flanges of traditional pre-buried channels are easily deformed, and a perforated connecting plate is provided outside the flange of the channel to reinforce the flange, jointly bear the load and thereby reduce flange deformation; address the defect that the existing pre-buried channels are complex during the installation stage, and connecting terminals and variable-section positioning rods are provided, which can effectively demould and accurately fix the channel at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of installation and fixation of a large number of equipment pipelines such as contact lines and evacuation platforms in subway tunnels, and in particular to a double-anchor pre-buried channel and a construction method thereof. Background Art

[0002] With economic development, major cities across China have begun constructing urban rail transit systems, and precast channel technology has entered the attention of those in the subway and high-speed rail industries. The load-bearing capacity of existing precast channels primarily relies on anchor rods or nails at the back of the channel. However, channel failure often occurs due to deformation or even failure of the flanges when transmitting tensile or shear loads. Furthermore, most existing precast channels are not replaceable, making it difficult to ensure their service life.

[0003] The “High-strength aluminum alloy embedded channel assembly and embedded channel forming process” disclosed in the Chinese patent (application number: 201811025494.3) improves the strength and load capacity of the embedded channel and the anti-slip ability of the teeth by embedding C-shaped channels and I-shaped anchor rods welded to the back of the bottom of the C-shaped channels, and uses high-strength aluminum alloy materials with low density. However, this method requires full-ring embedding on the shield segment, and the cost of the overall embedded parts is relatively high. The “Positioning device for embedded channels” disclosed in the Chinese patent (application number: 201920828172.6) realizes the positioning and installation of the embedded channels by setting U-shaped parts, avoiding direct welding and fixing of anchor rods and steel bars, and ensuring the stress-bearing performance of the channels. However, the setting of U-shaped parts increases the cost of embedded parts. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art. The technical solution adopted by the present invention is: a double-anchor pre-buried channel, comprising: a channel and an anchor assembly, wherein the two anchor assemblies are respectively connected to both sides of the channel.

[0005] A further improvement is that the anchor rod assembly includes an anchor rod and a connecting rod, the anchor rod is arranged on the side of the groove, and one end of the connecting rod is connected to the side wall of the groove, and the other end is connected to the anchor rod.

[0006] A further improvement is that the connecting rod is a swing bolt, the head of the swing bolt is clamped on the inner wall of the groove, and the swing bolt is fixed to the side wall of the groove by a nut, and the other end of the swing bolt is sleeved on the anchor rod.

[0007] A further improvement is that it also includes a plurality of flange reinforcement components, and the flange reinforcement components are connected to the channel and the anchor rod.

[0008] A further improvement is that the flange reinforcement assembly includes a connecting plate with three bolt holes, a T-bolt passing through the middle bolt hole is inserted into the groove, the positions of the bolt holes on both sides correspond to the positions of the anchor rods on both sides of the groove, and two bolts pass through the bolt holes on both sides to connect the anchor rods.

[0009] A further improvement is that a positioning auxiliary hole is opened on the back plate of the groove facing away from the opening side, and the positioning auxiliary hole is used to connect the positioning component.

[0010] A further improvement is that the positioning assembly includes a connecting terminal, a positioning rod and a positioning template, one end of the connecting terminal passes through the positioning auxiliary hole, and the other end is clamped outside the groove, and a positioning hole is provided on the positioning template. One end of the positioning rod passes through the positioning hole and extends into the groove and is connected to the connecting terminal, and the other end of the positioning rod is exposed outside the positioning template and is fixed by a positioning nut.

[0011] A further improvement is that the diameter of the portion of the positioning rod body corresponding to the positioning hole is different from that of the remaining portion of the rod body.

[0012] On the other hand, the present invention further provides a construction method of a double anchor pre-buried channel as described in any one of the above items, comprising the following steps:

[0013] Bolt holes and positioning auxiliary holes are opened on the side walls and back plate of the channel;

[0014] Pass the rod of the connecting rod through the bolt hole on the side wall of the channel, and fix the connecting rod to the side wall of the channel with a nut;

[0015] Insert the connection terminal into the positioning auxiliary hole;

[0016] Connect the anchor rod to the nut at the end of the connecting rod, and install a plug on the bolt hole at the end of the anchor rod;

[0017] Pass the positioning rod through the positioning hole on the positioning template and connect it to the connection terminal;

[0018] pouring concrete;

[0019] After the concrete has initially set, remove the positioning template and positioning components and fix the flange reinforcement components.

[0020] A further improvement is that after the concrete initially sets, the positioning template and positioning assembly are removed and the flange reinforcement assembly is fixed, including the following steps:

[0021] After the concrete has initially set, apply demoulding force to the positioning template, pull the groove part of the connecting terminal apart from the end, remove the plug on the anchor rod, insert the head of the T-bolt into the groove, and fix the main part through the connecting plate with a nut. The two sides of the connecting plate are fixedly connected by bolts connecting the anchor rods.

[0022] The beneficial effects of the present invention are:

[0023] The double-anchor pre-buried groove and construction method provided by the present invention address the defect of uneven force in traditional single-anchor pre-buried grooves. Small-sized anchor rods are arranged on both sides of the groove to achieve uniform load distribution, which is beneficial to improving the overall strength. In order to address the defect that the flanges of traditional pre-buried grooves are easily deformed, perforated connecting plates are arranged outside the groove flanges to reinforce the flanges, jointly bear the load and thus reduce flange deformation. In order to address the complex defects in the installation stage of existing pre-buried grooves, connecting terminals and variable-section positioning rods are provided, which can effectively demould and accurately fix the grooves at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 This is a schematic diagram of the double anchor rod pre-buried channel structure and positioning construction diagram of the present invention;

[0026] Figure 2 This is a structural schematic diagram of the double anchor rod embedded groove of the present invention in use;

[0027] Figure 3 It is a schematic diagram of the connecting rod structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the double anchor rod embedded channel structure and the flange reinforcement assembly structure of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the connecting plate of the present invention. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0031] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of an invention, "plurality" means two or more, unless otherwise specifically defined.

[0033] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] like Figure 1 、 Figure 2 and Figure 4 As shown, the present invention provides a double anchor pre-buried channel, comprising: a channel 1 and an anchor assembly 2, wherein the channel 1 is a conventional C-shaped channel, and its open end has flanges extending inwardly opposite to each other, and the two anchor assemblies 2 are fixedly connected to the two sides of the channel 1 respectively. The defect of uneven force on the channel has been solved, and the load is evenly distributed by fixing the structure on both sides of the channel, which is conducive to improving the overall strength. The channel 1 and the anchor assembly 2 are both buried in the concrete 200. When in use, the head of the T-bolt 100 connected to other accessories is clamped in the channel 1, and then the T-bolt 100 is fixed to the required position on the channel 1 (such as by the nut 300). Figure 2 shown).

[0035] Further improvement is that the anchor rod assembly 2 includes an anchor rod 21 and a connecting rod 22. In order to improve the anchoring ability of the anchor rod 21, the anchor rod 21 adopts a structure similar to a screw, and its head with a large diameter is located on the back plate side of the groove, and the direction of the end with a small diameter is consistent with the opening direction of the groove. The anchor rod 21 is arranged on the side of the groove 1, and one end of the connecting rod 22 is connected to the side wall of the groove 1, and the other end is connected to the anchor rod 21.

[0036] In order to facilitate the connection between the anchor rod assembly and the channel and improve the construction efficiency of the structure, the technical solution is further improved as follows: the connecting rod 22 is a movable bolt (such as Figure 3 As shown in the figure), one end of the movable bolt is in the shape of a conventional bolt, and a nut is welded to the other end. The flat head of the movable bolt is clamped on the inner wall of the groove 1, and the movable bolt is fixed to the side wall of the groove 1 through the nut 23. The other end of the movable bolt (the nut end of the movable bolt) is sleeved on the anchor rod 21.

[0037] When the channel is in use, its flange part may be deformed due to long-term stress. In order to avoid deformation of the flange, the technical solution is further improved as follows: the channel structure also includes multiple flange reinforcement components 3, and the flange reinforcement components 3 are connected to the channel 1 and the anchor rod 21, and then the flange of the channel is reinforced in sections through multiple flange reinforcement components 3 to improve the use strength of the flange.

[0038] Further improvement is that the flange reinforcement assembly 3 includes a connecting plate 31, which not only plays a connecting role, but more importantly, it is located below the flange and plays a supporting and reinforcing role to prevent the flange from deforming downward after being stressed. The connecting plate 31 is provided with three bolt holes 311 (such as Figure 5 As shown in FIG. 1 , a T-bolt 32 passes through the central bolt hole and is inserted into the channel 1 , with the other end exposed on the connecting plate 31 and secured by a nut 34 . The bolt holes on either side correspond to the anchor rods 21 on either side of the channel 1 , and two bolts 33 pass through the bolt holes 311 on either side to connect to the anchor rods 21 . That is, the connecting plate 31 is secured to the channel via the bolts passing through the bolt holes 311 and the T-bolts. The anchor rods not only anchor the channel but also provide connection points for fixing the flange reinforcement assembly.

[0039] When the channel structure is in use, in order to improve the accuracy of its construction position, it needs to be positioned using a positioning template. In order to cooperate with the use of the positioning template, the technical solution is further improved during the channel pre-embedded construction stage by opening a positioning auxiliary hole 11 on the back plate of the channel 1 facing away from the opening. The positioning auxiliary hole 11 is used to connect the positioning component 4. During the positioning construction, a plurality of positioning auxiliary holes 11 are pre-opened on the back plate of the channel 1. At the same time, a plurality of positioning holes are also pre-opened on the positioning template. The position and distribution rules of the positioning holes are consistent with those of the positioning auxiliary holes. After the positioning plate is installed, the positioning holes and the positioning auxiliary holes are respectively connected through the positioning component 4, thereby achieving accurate positioning of the channel position.

[0040] In order to improve the construction efficiency of the channel positioning construction process, the technical solution is further improved as follows: the positioning assembly 4 includes a connecting terminal 41, a positioning rod 42 and a positioning template 43. The rod-shaped end of the connecting terminal 41 passes through the positioning auxiliary hole 11, and the other end with a flat head is clamped outside the channel 1. The positioning template 43 is provided with multiple positioning holes 431 according to the installation position and distribution rules of the channel. One end of the positioning rod 42 passes through the positioning hole 431 and extends into the channel 1 and is threadedly connected to the connecting terminal 41. The other end of the positioning rod 42 is exposed outside the positioning template 43 and is fixed by a positioning nut 44. After fixing, the channel is fixed in its pre-embedded position and will not shift during pouring. In order to facilitate demoulding, the connecting terminal is made of plastic.

[0041] A further improvement is that the diameter of the portion corresponding to the positioning hole 431 of the rod body of the positioning rod 42 is different from that of the remaining portion of the rod body. The variable cross-section structure can improve the demoulding efficiency during demoulding.

[0042] On the other hand, the present invention further provides a construction method of a double anchor pre-buried channel as described in any one of the above items, comprising the following steps:

[0043] Bolt holes and positioning auxiliary holes are opened on the side walls and back plate of the channel;

[0044] Pass the rod of the connecting rod through the bolt hole on the side wall of the channel, and fix the connecting rod to the side wall of the channel with a nut;

[0045] Insert the connection terminal into the positioning auxiliary hole;

[0046] Connect the anchor rod to the nut at the end of the connecting rod, and install a plug 45 on the bolt hole at the end of the anchor rod. The plug is made of plastic and has a rolled thread on the rod body, which can be connected to the internal thread of the anchor rod.

[0047] Pass the positioning rod through the positioning hole on the positioning template and connect it to the connection terminal;

[0048] pouring concrete;

[0049] After the concrete has initially set, remove the positioning template and positioning components and fix the flange reinforcement components.

[0050] A further improvement is that after the concrete initially sets, the positioning template and positioning assembly are removed and the flange reinforcement assembly is fixed, including the following steps:

[0051] After the concrete has initially set, apply demoulding force to the positioning template, pull the groove part of the connecting terminal apart from the end, remove the plug on the anchor rod, insert the head of the T-bolt into the groove, and fix the main part through the connecting plate with a nut. The two sides of the connecting plate are fixedly connected by bolts connecting the anchor rods.

[0052] The double-anchor pre-buried groove and construction method provided by the present invention address the defect of uneven force in traditional single-anchor pre-buried grooves. Small-sized anchor rods are arranged on both sides of the groove to achieve uniform load distribution, which is beneficial to improving the overall strength. In order to address the defect that the flanges of traditional pre-buried grooves are easily deformed, perforated connecting plates are arranged outside the groove flanges to reinforce the flanges, jointly bear the load and thus reduce flange deformation. In order to address the complex defects in the installation stage of existing pre-buried grooves, connecting terminals and variable-section positioning rods are provided, which can effectively demould and accurately fix the grooves at the same time.

[0053] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A double anchor pre-buried channel, characterized in that: include: A groove and an anchor rod, the two anchor rods are respectively connected to the two sides of the groove; the anchor rod is arranged on the side of the groove, and one end of the connecting rod is connected to the side wall of the groove, and the other end is connected to the anchor rod; the connecting rod is a movable bolt, the head of the movable bolt is clamped on the inner wall of the groove, and the movable bolt is fixed to the side wall of the groove by a nut, and the other end of the movable bolt is sleeved on the anchor rod.

2. The double anchor pre-buried channel according to claim 1, characterized in that: It also includes a plurality of flange reinforcement components, which are connected to the channel and the anchor rod.

3. The double anchor pre-buried channel according to claim 2, characterized in that: The flange reinforcement assembly includes a connecting plate, which is provided with three bolt holes. A T-bolt passing through the middle bolt hole is inserted into the groove. The positions of the bolt holes on both sides correspond to the positions of the anchor rods on both sides of the groove. Two bolts pass through the bolt holes on both sides to connect the anchor rods.

4. The double anchor pre-buried channel according to claim 3, characterized in that: A positioning auxiliary hole is provided on the back plate of the channel facing away from the opening side, and the positioning auxiliary hole is used to connect the positioning component.

5. The double anchor pre-buried channel according to claim 4, characterized in that: The positioning assembly includes a connecting terminal, a positioning rod and a positioning template. One end of the connecting terminal passes through the positioning auxiliary hole, and the other end is clamped outside the groove. The positioning template is provided with a positioning hole. One end of the positioning rod passes through the positioning hole and extends into the groove and is connected to the connecting terminal. The other end of the positioning rod is exposed outside the positioning template and is fixed by a positioning nut.

6. The double anchor pre-buried channel according to claim 5, characterized in that: The diameter of the portion of the positioning rod body corresponding to the positioning hole is different from that of the remaining portion of the rod body.

7. A construction method for a double anchor pre-buried channel according to any one of claims 5 or 6, characterized in that: The steps include: Bolt holes and positioning auxiliary holes are opened on the side walls and back plate of the channel; Pass the rod of the connecting rod through the bolt hole on the side wall of the channel, and fix the connecting rod to the side wall of the channel with a nut; Insert the connection terminal into the positioning auxiliary hole; Connect the anchor rod to the nut at the end of the connecting rod, and install a plug on the bolt hole at the end of the anchor rod; Pass the positioning rod through the positioning hole on the positioning template and connect it to the connection terminal; pouring concrete; After the concrete has initially set, remove the positioning components and fix the flange reinforcement components.

8. The construction method according to claim 7, characterized in that: After the concrete has initially set, the positioning assembly is removed and the flange reinforcement assembly is fixed, including the following steps: After the concrete has initially set, apply demoulding force to the positioning template, pull the groove part of the connecting terminal apart from the end, remove the plug on the anchor rod, insert the head of the T-bolt into the groove, and fix the main part through the connecting plate with a nut. The two sides of the connecting plate are fixedly connected by bolts connecting the anchor rods.

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