A composite UHPC pressure plate connection structure and construction method thereof

Abstract

The present invention belongs to the technical field of highway slope protection structures, and more particularly to a composite UHPC pressure plate connection structure and a construction method thereof. The present invention arranges a pressure-bearing stacking plate unit, a fixing unit, and an anchoring unit on the pressure-bearing base plate unit, so that the pressure-bearing plate connection structure can be fixedly connected with high strength both by itself and between two adjacent ones. In addition, the present invention also inserts an anchoring unit on the slope first, then installs the pressure-bearing base plate unit, and then installs all the pressure-bearing stacking plate units, tightens the corresponding fixing units in turn, and finally tensions the anchoring unit, so that the pressure-bearing plate connection structure can be smoothly installed. Moreover, for the pressure-bearing base plate unit and the pressure-bearing stacking plate unit, it is also possible to first install the entire unit and then dock with the anchoring unit.

Description

Technical Field

[0001] The invention belongs to the technical field of highway slope protection structures, and in particular relates to a composite UHPC pressure plate connection structure and a construction method thereof. Background Art

[0002] Highway slope refers to the two exposed slopes of a highway roadbed that is roughly trapezoidal in shape. The most primitive method of highway slope protection is to pour concrete on the slope of the roadbed as a whole. The advantages of this method are strong and comprehensive protection, but there are many disadvantages, such as high cost, complicated construction, ecological environmental damage, and easy visual fatigue for drivers.

[0003] Therefore, a relatively advanced method of prestressed anchor rods plus cross bearing plates has emerged. For example, the Chinese invention patent with patent publication number CN112240028A and publication date 2021.01.19 discloses a prefabricated UHPC slope anchor plate device and its installation method.

[0004] Among them, UHPC refers to the existing ultra-high performance concrete, and the structure of its slope anchor plate device includes N anchor plates stacked in sequence, the centers of the N anchor plates are all provided with a first mounting through hole, and the centers of the first mounting through holes on the N anchor plates are all located on the same virtual axis, the anchor plate on the bottom layer is used to stick to the slope surface, the tail end of the anchor cable passes through the first mounting through holes of the N anchor plates in sequence and is fixedly connected to the anchor plate on the top layer through the anchor pier, so as to constrain and fix the N anchor plates on the slope.

[0005] However, the slope anchor plate device in this invention patent still has at least the following two shortcomings during actual use.

[0006] First, the connection strength between the multiple anchor plates stacked in sequence is not strong enough, and the integrity of the device is not strong.

[0007] Second, when adjacent anchor plate devices are to be reconnected, it is difficult to provide a connection and fixing method with sufficient strength.

[0008] So in summary, there is an urgent need for a composite UHPC pressure plate slope protection structure that has high structural stability and can be fully connected and reinforced between adjacent ones. Summary of the invention

[0009] The present invention provides a laminated UHPC pressure plate connection structure, which can be fixedly connected with high strength both by itself and between two adjacent pressure plate connection structures by arranging a pressure stacking plate unit, a fixing unit and an anchoring unit on a pressure bottom plate unit.

[0010] In addition, the present invention also provides a construction method for a composite UHPC pressure plate connection structure, which can be smoothly installed by first inserting an anchor unit on the slope, then installing the pressure base plate unit, and then installing all the pressure stacking plate units, tightening the corresponding fixing units in turn, and finally tensioning the anchor unit.

[0011] Moreover, for the pressure-bearing bottom plate unit and the pressure-bearing stacked plate unit, a method of first installing them as a whole and then docking them with the anchor unit can be adopted.

[0012] The technical solution adopted by the present invention to solve the above-mentioned problem is: a composite UHPC pressure plate connection structure, including a pressure base plate unit arranged on the slope, a pressure stacking plate unit arranged on the pressure base plate unit, a fixing unit arranged on the pressure base plate unit and the pressure stacking plate unit and used for clamping and connecting the pressure stacking plate unit above, and an anchoring unit arranged in the slope and passing through the pressure base plate unit and all the pressure stacking plate units.

[0013] A further preferred technical solution is that the pressure-bearing bottom plate unit includes a bottom square plate, four bottom extension plates respectively arranged on four sides of the bottom square plate, and a bottom circular hole arranged on the bottom square plate and used to pass through the anchor unit.

[0014] A further preferred technical solution is that the pressure-bearing stacking plate unit includes stacked square plates arranged on the bottom square plate, which are respectively arranged on the four sides of the stacked square plates and indented inward on the bottom extension plate to be used for setting the stacked extension plates of the fixing unit, and stacked circular holes arranged on the stacked square plates and used to pass through the anchor unit.

[0015] A further preferred technical solution is that the fixing unit includes a fixing block arranged on the bottom extension plate and the stacking extension plate and used to engage the stacking extension plate above, a countersunk hole arranged on the bottom extension plate and the stacking extension plate, and a screw connection group arranged on the two countersunk holes aligned up and down.

[0016] A further preferred technical solution is that: the pressure-bearing bottom plate unit is provided with two or four countersunk holes, which are respectively arranged on two symmetrical bottom extension plates, or respectively arranged on four bottom extension plates;

[0017] Each of the stacked extension plates is provided with one or two countersunk holes, and two upper and lower adjacent pressure stacking plate units are provided with two or four screw connection groups in total.

[0018] A further preferred technical solution is that the two countersunk holes on the stacked extension plate are respectively located at two sides of the fixed block, and the screw connection group is also provided with a reinforcing steel plate for connecting the two adjacent pressure plates on the slope.

[0019] A further preferred technical solution is that: the bottom extension plate is also provided with an outer separate hole for installing the screw connection group and the reinforcement steel plate.

[0020] A further preferred technical solution is that the anchor unit comprises an anchor rod with one end inserted into the slope and the other side passing through the bottom circular hole and all the stacked circular holes, and an anchor arranged on the outer end of the anchor rod.

[0021] A further preferred technical solution is that the exposed section of the anchor rod is inclined downward compared to the vertical line of the slope.

[0022] A construction method for a composite UHPC pressure plate connection structure comprises the following steps in sequence:

[0023] S1, inserting the anchor unit into the slope and leveling the slope surface;

[0024] S2, pre-installing the fixing unit on the pressure-bearing base plate unit, and then sleeve-connecting the pressure-bearing base plate unit on the anchoring unit;

[0025] S3, on the pressure-bearing bottom plate unit, the anchoring unit is also sleeved, that is, the bottom pressure-bearing stacked plate unit is installed, and the fixing unit is fastened;

[0026] S4, sequentially installing all the remaining pressure-bearing stack units on the pressure-bearing stack unit, and sequentially fastening the fixing unit;

[0027] S5. Prestress the anchoring unit on the uppermost pressure-bearing plate unit, and finally cut and seal the anchoring unit to obtain the final pressure-bearing plate connection structure.

[0028] The present invention has the following advantages.

[0029] First, the size specifications of the pressure base plate unit and several pressure stacking plate units decrease from bottom to top, and are stacked and overlapped as a whole to ensure that the basic functions of the cross pressure plate can be effectively performed.

[0030] Second, corresponding fixing units are arranged on the pressure-bearing bottom plate unit and the pressure-bearing stacking plate unit to ensure that the multi-layer plate structure can be "integrated into a whole" and has sufficient integrity and structural strength to avoid harmful problems such as loosening, scattering, damage, and collision of the slope protection structure itself.

[0031] Thirdly, the fixing unit can also fully connect the two adjacent pressure plate connection structures, thus “turning the parts into a whole” and ensuring a more stable and lasting slope protection effect.

[0032] Fourth, each pressure-bearing stacking plate unit has the function of snapping in the upper, lower, left and right positions during installation, ensuring that its installation is more accurate and convenient.

[0033] Fifth, the fixing unit has a variety of different screw connection methods, which ensures that the structural types of the pressure plate connection structure are more flexible and optional, and can be applied to various pressure plates of different shapes and weights.

[0034] Sixth, the anchor unit has an inclined upward pulling component on the pressure plate structure, ensuring that the pressure plate connection structure is more stable on the slope.

[0035] Seventh, a single pressure base plate unit and several pressure stacking plate units can be installed one by one in sequence, or they can be installed as a whole and then connected with the anchor unit, ensuring that the construction method of the pressure plate connection structure is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the use of the pressure plate connection structure in the present invention.

[0037] Figure 2 It is a structural schematic diagram of the pressure-bearing bottom plate unit in the present invention.

[0038] Figure 3 It is a schematic diagram of the first structure of the pressure-bearing laminated plate unit in the present invention.

[0039] Figure 4 It is a schematic diagram of the second structure of the pressure-bearing laminated plate unit in the present invention.

[0040] Figure 5 It is a schematic diagram of the installation method of the pressure-bearing stacking plate unit on the pressure-bearing bottom plate unit in the present invention.

[0041] Figure 6 It is a schematic diagram of the first position structure of the fixing unit in the present invention.

[0042] Figure 7 It is a schematic diagram of the position structure of the reinforcement steel plate in the present invention.

[0043] Figure 8 It is a schematic diagram of the second position structure of the fixing unit in the present invention.

[0044] In the accompanying drawings, the meanings of the various numbers are as follows: slope a, green area b, pressure-bearing base plate unit 1, pressure-bearing stacked plate unit 2, fixing unit 3, anchor unit 4, bottom square plate 101, bottom extension plate 102, bottom circular hole 103, protruding block 104, stacked square plates 201, stacked extension plates 202, stacked circular holes 203, fixing blocks 301, countersunk holes 302, screw groups 303, reinforcing steel plates 304, outer separate holes 305, anchor rods 401, and anchors 402. DETAILED DESCRIPTION

[0045] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0046] As attached Figure 1-8 As shown, a composite UHPC pressure plate connection structure includes a pressure base plate unit 1 arranged on a slope body a, a pressure stacking plate unit 2 arranged on the pressure base plate unit 1, a fixing unit 3 arranged on the pressure base plate unit 1 and the pressure stacking plate unit 2 and used for engaging and connecting the pressure stacking plate unit 2 above, and an anchoring unit 4 arranged in the slope body a and passing through the pressure base plate unit 1 and all the pressure stacking plate units 2.

[0047] In this embodiment, the main materials of the pressure-bearing bottom plate unit 1 and the pressure-bearing stacking plate unit 2 are both UHPC, and the number of the pressure-bearing stacking plate units 2 is 1-5, which ultimately ensures that the pressure-bearing plate connection structure itself has sufficient structural strength and will not be broken or torn by the anchor unit 4.

[0048] In addition, the size of the pressure plate connection structure decreases from bottom to top, and the fixing unit 3 is only used to connect two adjacent pressure plates above and below.

[0049] Finally, multiple pressure plate connection structures are arranged horizontally and vertically on the slope a, so that both the slope reinforcement and protection and greening planting functions can be effective.

[0050] The pressure bottom plate unit 1 includes a bottom square plate 101 , four bottom extension plates 102 respectively arranged on four sides of the bottom square plate 101 , and a bottom circular hole 103 arranged on the bottom square plate 101 and used to pass through the anchor unit 4 .

[0051] In this embodiment, the shapes of the pressure bottom plate unit 1 and the pressure stacked plate unit 2 are both "cross-shaped", that is, the bottom square plate 101 is centered and the bottom extension plate 102 is located on the four sides. Finally, the anchor unit 4 "pull[s] inward" the pressure bottom plate unit 1 at the bottom circular hole 103 to reinforce the slope a.

[0052] The pressure-bearing stacking plate unit 2 includes stacked square plates 201 arranged on the bottom square plate 101, which are respectively arranged on the four sides of the stacked square plates 201 and indented inward on the bottom extension plate 102 to be used for setting the stacked extension plates 202 of the fixing unit 3, and stacked circular holes 203 arranged on the stacked square plates 201 and used to pass through the anchor unit 4.

[0053] In this embodiment, the material and shape of the pressure-bearing stacked plate unit 2 are exactly the same as those of the pressure-bearing bottom plate unit 1, except that the side length of the stacked square plates 201 and the length and width of the stacked extension plates 202 are reduced compared to the latter, and the above-mentioned dimensional parameters are reduced successively between different pressure-bearing stacked plate units 2, so that the appearance of the pressure plate connection structure is similar to a "pyramid".

[0054] In addition, the shapes of the bottom extension plate 102 and the stacked extension plate 202 are both isosceles trapezoids. The above-mentioned inward indentation means that the trapezoidal height of the stacked extension plate 202 is smaller than the trapezoidal height of the bottom extension plate 102, and the trapezoidal heights of all the pressure-bearing stacked plate units 2 become smaller as they go up.

[0055] The fixing unit 3 includes a fixing block 301 arranged on the bottom extension plate 102 and the stacked extension plate 202 and used for engaging the stacked extension plate 202 above, a countersunk hole 302 arranged on the bottom extension plate 102 and the stacked extension plate 202, and a screw connection group 303 arranged on the two countersunk holes 302 aligned up and down.

[0056] In this embodiment, the screw connection group 303 is a bolt and a nut, and the bottom extension plate 102 and the stacked extension plate 202 are both provided with the countersunk holes 302 to prevent the heads of the bolts and the nuts from protruding beyond the surface of the extension plates.

[0057] In addition, there is only one requirement for the fixing block 301, namely: its inner side surface is relatively engaged with the end surface of the stacked extension plate 202 above, ensuring that the newly installed pressure stacking plate unit 2 has only one unique placement position and will not deviate up and down or left and right.

[0058] Therefore, the other sides of the fixing block 301 do not need to fit the sides of the bottom extension plate 102 and the stacked extension plate 202 . The fixing block 301 may be rectangular, trapezoidal, or triangular. There is no other specific limitation on the height of the fixing block 301 .

[0059] In addition, the bottom extension plate 102 is also provided with a protruding block 104 for inserting into the slope a. A matching groove can be preset on the slope a, ultimately ensuring that the pressure plate connection structure is more stable on the slope a.

[0060] Finally, anti-skid protrusions may be further provided on the upper and lower surfaces of the pressure-bearing bottom plate unit 1 and the pressure-bearing stacked plate unit 2. The shapes of the anti-skid protrusions include strip-shaped protrusions with a regular triangle or semicircular cross-section, or hemispherical dot-shaped protrusions.

[0061] The pressure-bearing bottom plate unit 1 is provided with two or four countersunk holes 302, which are respectively arranged on two symmetrical bottom extension plates 102, or respectively arranged on four bottom extension plates 102;

[0062] Each stacked extension plate 202 is provided with one or two countersunk holes 302 , and two upper and lower adjacent pressure stacking plate units 2 are provided with two or four screw connection groups 303 in total.

[0063] In this embodiment, two or four screw connection groups 303 can be set between the bottom extension plate 102 and the lowest stacked extension plate 202, that is, two symmetrical bottom extension plates 102 are selected for installation on the four bottom extension plates 102, or all four bottom extension plates 102 are directly provided with screw connection groups 303.

[0064] As for the four stacked extension plates 202 of the pressure-bearing stacked plate unit 2, at least one countersunk hole 302 is provided thereon, that is, a total of four countersunk holes 302, which are used as follows: two of them are used to install the nuts of the lower screw connection group 303, that is, connected downward, and the remaining two are used to install the bolts of the upper screw connection group 303, that is, connected upward, as shown in the attached figure. Figure 3 .

[0065] In addition, two countersunk holes 302 may be provided on each stacked extension plate 202, that is, a total of eight countersunk holes 302, which are used as follows: the outer countersunk holes 302 are all used to install the nuts of the lower screw connection group 303, and the inner countersunk holes 302 are all used to install the bolts of the upper screw connection group 303. This connection method is simpler and stronger, but it requires more bolts and nuts. For details, see the attached Figure 4 .

[0066] The two countersunk holes 302 on the stacked extension plate 202 are respectively located at two sides of the fixing block 301 , and the screw connection group 303 is also provided with a reinforcing steel plate 304 for connecting two adjacent pressure-bearing plates on the slope.

[0067] In this embodiment, if there is no reinforcing steel plate 304, all the pressure-bearing plate connection structures on the entire slope a are independent of each other, so the integrity of the slope protection structure is not strong and the impact resistance is relatively weak.

[0068] In addition, as detailed in the attached Figure 8 As shown, the screw connection groups 303 are all located on the outside of the fixed block 301, that is, they are exposed and visible, and each of the stacked extension plates 202 has two countersunk holes 302, that is, the top, bottom, left, and right of the pressure plate connection structure, and the top, bottom, left, and right of each layer of pressure plate, and the reinforcing steel plates 304 can be set, which can significantly improve the overall strength of the protective structure.

[0069] Of course, the length of the lower reinforcing steel plate 304 is relatively short, and the respective reinforcing steel plates 304 of the two adjacent pressure-bearing plate connection structures can be welded later, or they are separate pieces from the beginning. For example, it is both the reinforcing steel plate 304 of the left pressure-bearing plate connection structure and the reinforcing steel plate 304 of the right pressure-bearing plate connection structure.

[0070] The bottom extension plate 102 is also provided with an outer single hole 305 for mounting the screw connection set 303 and the reinforcement steel plate 304 .

[0071] In this embodiment, if there is no outer separate hole 305, the pressure-bearing bottom plate unit 1 itself cannot be installed with the reinforcing steel plate 304, and the reinforcing steel plate 304 can only be installed on the pressure-bearing stacked plate unit 2. For details, see the attached Figure 8 , which is not ideal.

[0072] In addition, the countersunk requirements for the countersunk holes 302 and the outer individual holes 305 are not necessary. In other words, if the stacked extension plate 202 needs to press and cover the screw connection group 303, the countersunk requirements for the countersunk holes 302 are necessary.

[0073] The anchoring unit 4 includes an anchor rod 401 with one end inserted into the slope a and the other side passing through the bottom circular hole 103 and all the stacked circular holes 203 , and an anchor 402 arranged on the outer end of the anchor rod 401 .

[0074] In this embodiment, the anchor 402 is pressed on the topmost stacked square plate 201 .

[0075] The exposed section of the anchor rod 401 is inclined downward compared to the vertical line of the slope surface.

[0076] In this embodiment, the anchor rod 401 has a component force that pulls the pressure plate upward obliquely, ensuring that the pressure plate connection structure has better installation stability on the slope a. At the same time, the anchor rod 401 is inclined compared to the pressure plate, so the height position of the stacked circular holes 203 needs to be lowered from bottom to top, that is, the farther away from the slope, the lower it is. For details, see the attached Figure 5 .

[0077] A construction method for a composite UHPC pressure plate connection structure comprises the following steps in sequence:

[0078] S1, inserting the anchor unit 4 on the slope a and leveling the slope surface;

[0079] S2, pre-installing the fixing unit 3 on the pressure-bearing base plate unit 1, and then sleeve-fitting the pressure-bearing base plate unit 1 on the anchoring unit 4;

[0080] S3, on the pressure-bearing bottom plate unit 1, the anchoring unit 4 is also sleeved, that is, the bottom pressure-bearing stacked plate unit 2 is installed, and the fixing unit 3 is fastened;

[0081] S4, sequentially installing all the remaining pressure-bearing stacking plate units 2 on the pressure-bearing stacking plate unit 2, and sequentially fastening the fixing unit units 3;

[0082] S5. On the uppermost pressure-bearing plate unit 2, prestress the anchoring unit 4, and finally cut and seal the anchoring unit 4 to obtain the final pressure-bearing plate connection structure.

[0083] In this embodiment, the gaps between the pressure-bearing bottom plate unit 1 and the pressure-bearing stacking plate unit 2 and between several pressure-bearing stacking plate units 2 can be filled with mortar manually.

[0084] In addition, one of the pressure-bearing bottom plate units 1 and a plurality of pressure-bearing stacking plate units 2 may be installed as a whole first, and then placed on the slope a as a whole, and finally the anchor unit 4 is tensioned in the same manner. This method is also possible.

[0085] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A composite UHPC pressure plate connection structure, characterized in that: The invention comprises a pressure-bearing base plate unit (1) arranged on a slope body (a), a pressure-bearing laminated plate unit (2) arranged on the pressure-bearing base plate unit (1), a fixing unit (3) arranged on the pressure-bearing base plate unit (1) and the pressure-bearing laminated plate unit (2) and used for engaging and connecting the pressure-bearing laminated plate unit (2) above, and an anchoring unit (4) arranged in the slope body (a) and passing through the pressure-bearing base plate unit (1) and all the pressure-bearing laminated plate units (2). The pressure-bearing bottom plate unit (1) comprises a bottom square plate (101), four bottom extension plates (102) respectively arranged on four sides of the bottom square plate (101), and a bottom circular hole (103) arranged on the bottom square plate (101) and used to pass through the anchor unit (4). The pressure-bearing stacked plate unit (2) comprises stacked square plates (201) arranged on the bottom square plate (101), stacked extension plates (202) respectively arranged on four sides of the stacked square plates (201) and indented inwardly on the bottom extension plate (102) for arranging the fixing unit (3), and stacked circular holes (203) arranged on the stacked square plates (201) and for passing through the anchor unit (4). The fixing unit (3) comprises a fixing block (301) arranged on the bottom extension plate (102) and the stacking extension plate (202) and used for engaging the stacking extension plate (202) above, a countersunk hole (302) arranged on the bottom extension plate (102) and the stacking extension plate (202), and a screw connection group (303) arranged on two countersunk holes (302) aligned up and down. The pressure-bearing bottom plate unit (1) is provided with two or four countersunk holes (302), which are respectively arranged on two symmetrical bottom extension plates (102), or respectively arranged on four bottom extension plates (102); Each stacked extension plate (202) is provided with one or two countersunk holes (302), and two upper and lower adjacent pressure-bearing stacked plate units (2) are provided with a total of two or four screw connection groups (303). The two countersunk holes (302) on the stacked extension plate (202) are respectively located at two sides of the fixing block (301), and the screw connection group (303) is also provided with a reinforcing steel plate (304) for connecting two adjacent pressure-bearing plate connection structures on the slope. The bottom extension plate (102) is also provided with an outer single hole (305) for installing the screw connection group (303) and the reinforcing steel plate (304). The anchoring unit (4) comprises an anchor rod (401) with one end inserted into the slope (a) and the other side passing through the bottom circular hole (103) and all the stacked circular holes (203), and an anchor (402) arranged on the outer end of the anchor rod (401).

2. A composite UHPC pressure plate connection structure according to claim 1, characterized in that: The exposed section of the anchor rod (401) is inclined downward compared to the vertical line of the slope surface.

3. A construction method for the composite UHPC pressure plate connection structure according to claim 1, characterized in that The following steps are included in sequence: S1, inserting the anchor unit (4) into the slope (a) and leveling the slope surface; S2, pre-installing the fixing unit (3) on the pressure-bearing base plate unit (1), and then sleeve-fitting the pressure-bearing base plate unit (1) onto the anchoring unit (4); S3, on the pressure-bearing bottom plate unit (1), the anchoring member unit (4) is also sleeved, that is, the bottommost pressure-bearing stacked plate unit (2) is installed, and the fixing member unit (3) is fastened; S4, sequentially installing all the remaining pressure-bearing stacked plate units (2) on the pressure-bearing stacked plate units (2), and sequentially fastening the fixing unit units (3); S5. Prestress the anchoring unit (4) on the uppermost pressure-bearing laminated plate unit (2), and finally cut and seal the anchoring unit (4) to obtain the final pressure-bearing plate connection structure.

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