Quickly assembled square skeleton revetment structure and construction method

Abstract

The application provides a fast assembling square skeleton slope protection structure and a construction method. The fast assembling square skeleton slope protection structure mainly comprises a prefabricated beam, a node connecting piece and a drainage ditch. The prefabricated beams are connected through the node connecting pieces and form nodes to be poured. After the node pouring and adjustment, the skeleton slope protection structure is formed. The fast prefabricated assembling square skeleton slope protection structure can be quickly installed and used for slope protection. The problem of low construction efficiency of cast-in-place construction is overcome. The timeliness of slope support is ensured. Especially for some high and steep slopes which are not suitable for being exposed for too long, the height perpendicular to the slope surface at each node can be accurately and conveniently adjusted. The installation and adjustment are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slope protection, in particular to a fast-assembled square skeleton slope protection structure and a construction method. BACKGROUND

[0002] Large infrastructure construction in mountain and valley areas often needs to carry out high slope permanent protection. Due to the limitation of terrain and space, while considering earthwork balance, under the premise of ensuring slope stability, the amount of excavation is reduced, and the slope of the slope often appears multi-stage super-high slope. In order to prevent weathering and rain erosion of the slope, especially the soil slope, the excavated slope needs to be protected in time. Among them, slope protection is the most commonly used slope protection measure, and the traditional slope protection adopts the method of excavating groove on the slope and then pouring concrete skeleton.

[0003] In the existing slope protection technology, the commonly used method is to construct a concrete protection skeleton on the slope. During the slope skeleton protection construction, due to the large slope, the following problems exist when erecting the formwork on the slope to pour the skeleton beam; first, the formwork is difficult to install on the slope; second, it needs to go through the processes of formwork installation, maintenance and formwork removal, which is low in construction efficiency; third, pouring concrete on the slope is easy to cause the upper concrete to flow to the lower part, resulting in concrete segregation. SUMMARY

[0004] The present application provides a fast-assembled square skeleton slope protection structure and a construction method to solve the problems of difficult installation of formwork, easy flow and segregation of concrete, and complex process and low construction efficiency in the construction of the slope protection skeleton in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A fast-assembled square skeleton slope protection structure, comprising a precast beam, a node connecting piece and a drainage ditch, wherein:

[0007] The drainage ditch is arranged at the bottom of the fast-assembled square skeleton slope protection structure, and the precast beams are arranged in a rectangular grid above the drainage ditch;

[0008] The node connecting piece connects the precast beams and the drainage ditch, and the end faces of the connection parts between the precast beams and the node connecting piece form a connecting node area;

[0009] The node area is poured with concrete, so that the precast beams are tightly connected.

[0010] Further, the precast beam comprises a rectangular cross-section beam and a trapezoidal cross-section beam, and the trapezoidal cross-section beam has a protruding part.

[0011] The longitudinal arranged precast beams of the quick-assembled square skeleton revetment structure are rectangular section beams, and the precast beams arranged transversely on the top are rectangular section beams.

[0012] The precast beams arranged on the non-top of the quick-assembled square skeleton revetment structure are trapezoidal section beams, and the protruding part of the trapezoidal section beam is arranged on the lower edge.

[0013] Further, coupling bolts are pre-buried at both ends of the precast beams and on the drainage ditch, and coupling bolt mounting holes are pre-reserved on the node coupling member.

[0014] Further, the coupling node area includes four first-type coupling nodes left by splicing of the precast beams, three second-type coupling nodes left by splicing of the precast beams, and two third-type coupling nodes left by splicing of the precast beams.

[0015] The node coupling member has more than one type, and the first-type coupling node, the second-type coupling node, and the third-type coupling node are composed of the precast beams and more than one type of the node coupling member.

[0016] Further, the node coupling member includes a first coupling member coupled to the inner sides of two precast beams spliced perpendicularly to each other, a third coupling member coupled to the outer sides of two precast beams spliced perpendicularly to each other, and a second coupling member coupled to the outer sides of two precast beams directly butted on the same straight line.

[0017] Further, the first coupling member has a height-precision flat bolt mounting hole.

[0018] After the first coupling member is installed and coupled to the precast beams, a height-precision flat bolt is inserted, the bottom of the height-precision flat bolt is supported on the slope surface, and rotating the height-precision flat bolt will make the precast beams at the coupling position of the first coupling member move in a direction perpendicular to the slope surface.

[0019] Further, in each coupling node area of the quick-assembled square skeleton revetment structure where the first coupling member is installed, the end surfaces of the precast beams are adjusted to the same height relative to the slope surface by the height-precision flat bolt.

[0020] Further, the node anchor rod is pre-punched before pouring the coupling node area.

[0021] Further, the node coupling member is detachable.

[0022] A method for installing a quick-assembled square skeleton revetment structure, the quick-assembled square skeleton revetment structure including precast beams, node coupling members, and a drainage ditch, the method for installing the quick-assembled square skeleton revetment structure including the following steps:

[0023] The quick assembly square skeleton slope protection structure uses a excavator to brush the slope to adjust the slope before installation;

[0024] After the quick assembly square skeleton slope protection structure is installed, concrete is sprayed at the bottom of the precast beam to tightly connect the precast beam with the slope surface, and the precast beam and the slope surface form an integral whole.

[0025] The beneficial effects of the present application are:

[0026] 1. The construction speed of the skeleton beam slope protection is accelerated, and the construction efficiency and the timeliness of the protection are improved.

[0027] 2. Compared with the cast-in-place skeleton beam, the pouring quality and appearance of the precast skeleton beam are easier to guarantee.

[0028] 3. The node connecting piece can quickly realize installation positioning and precision leveling, and improves the installation quality and installation precision of the slope skeleton beam. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a front view of the installation surface of the quick assembly square skeleton slope protection structure of the present application;

[0030] Figure 2 It is a sectional view of the trapezoidal sectional beam of the quick assembly square skeleton slope protection structure of the present application;

[0031] Figure 3 It is a side view of the quick assembly square skeleton slope protection structure of the present application;

[0032] Figure 4 It is a first type of connecting node local enlarged view of the quick assembly square skeleton slope protection structure of the present application;

[0033] Figure 5 It is a second type of connecting node local enlarged view of the quick assembly square skeleton slope protection structure of the present application;

[0034] Figure 6 It is a third type of connecting node local enlarged view of the quick assembly square skeleton slope protection structure of the present application;

[0035] Figure 7 It is a first connecting piece schematic view of the quick assembly square skeleton slope protection structure of the present application;

[0036] Figure 8 It is a first connecting piece top view of the quick assembly square skeleton slope protection structure of the present application;

[0037] Figure 9 It is a second connecting piece schematic view of the quick assembly square skeleton slope protection structure of the present application;

[0038] Figure 10 Figure 3 is a schematic view of a third connecting piece of the quick assembly square framework slope protection structure of the present application;

[0039] Figure 11 Figure 4 is a schematic view of a leveling by elevation precision leveling bolt of the quick assembly square framework slope protection structure of the present application.

[0040] Mark explanation:

[0041] 1, drainage ditch; 2, trapezoidal cross-section beam; 3, rectangular cross-section beam; 4, slope; 5, node anchor rod; 61, first connecting piece; 611, connecting bolt clamping groove; 612, bottom fitting plate; 62, second connecting piece; 63, third connecting piece; 7, connecting bolt; 71, connecting bolt mounting hole; 8, elevation precision leveling bolt; 81, elevation precision leveling bolt mounting hole; 9, node concrete filling area. Specific embodiments

[0042] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be further clearly and completely described below combined with the embodiments of the present application. It should be noted that the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] The present application provides a kind of quick assembly square framework slope protection structure, including precast beam, drainage ditch and node connecting piece, the installation surface of the quick assembly square framework slope protection structure after installation is as shown in Figure 1 Drainage ditch 1 has a corner guard, is arranged transversely in the lowermost edge, is responsible for the rainwater of slope area accumulation and is drained out;Preform beam is arranged in rectangular grid, and preform beam is divided into trapezoidal cross-section beam 2 and rectangular cross-section beam 3, all longitudinal beam sections in quick assembly square framework slope protection structure adopt rectangular cross-section beam 3, the uppermost edge transverse beam section adopts rectangular cross-section beam 3, and each section of transverse beam section in middle adopts trapezoidal cross-section beam 2, as shown in Figure 2 Its protruding water retaining part is located at the lower side when installation, so that the water flow on the upper part of slope is blocked by the protruding water retaining part of each transversely arranged trapezoidal cross-section beam 2 multiple times when flowing down, and the impact of water flow on slope surface is reduced.

[0044] Figure 3 The arrangement of the present application on the slope is intuitively displayed in the side view of quick assembly square framework slope protection structure, and the beam section of the present application is precast, so that the node to be poured is left when assembling, and the node anchor rod 5 is needed to be punched into the slope 4 before pouring, to improve the stability of the node after pouring.

[0045] In the quick assembly square skeleton revetment structure, three types of connecting node structures are left out due to the arrangement of the structure during the prefabricated beam assembly construction, which are the first type of connecting node left out by the four-section prefabricated beam splicing, the second type of connecting node left out by the three-section prefabricated beam splicing, and the third type of connecting node left out by the two-section prefabricated beam splicing, so the node connecting pieces also need to be provided with multiple structure types to facilitate the assembly at the nodes.

[0046] Figure 4 The connecting structure at the first type of connecting node is enlarged and shown, and the two prefabricated beams at right angles are connected by the first connecting piece 61. The two ends of the prefabricated beam need to be pre-buried with connecting bolts 7 during the manufacturing, and during the assembly, the connecting bolt mounting holes of the node connecting piece are arranged at the positions corresponding to the connecting bolts 7, and then the nuts are arranged and tightened to fix the node connecting piece, and finally the height of the prefabricated beam at the connecting node is adjusted to be perpendicular to the slope surface through the elevation fine adjusting bolt 8. After the assembly, the node concrete filling area 9 to be poured is formed at the connecting node, and the end surface of the node connecting piece and the prefabricated beam can exactly serve as the pouring formwork, in addition, the node connecting piece and the prefabricated beam can be chiseled or provided with connecting reinforcement on the cross section of the prefabricated beam in the node before the cast-in-place concrete is poured to ensure the integrity of the node connecting piece.

[0047] The structure of the first connecting piece 61 is shown in Figure 7 and Figure 8 , which is made of three rectangular plates and one triangular plate, among the two side plates, one is provided with a connecting bolt mounting hole 71, and the other is provided with a connecting bolt clamping groove 611, which reduces the use amount of connecting bolts and makes the installation more convenient under the condition of meeting the connecting fastening, and further, a small bottom adhering plate 612 is arranged at the bottom to make the first connecting piece 61 adhere more closely when connected with the prefabricated beam.

[0048] The triangular plate in the middle of the first connecting piece 61 is provided with an elevation fine adjusting bolt mounting hole 81 for mounting the elevation fine adjusting bolt 8. As shown in Figure 11 , the elevation fine adjusting bolt 8 has sufficient length, and the lower end thereof abuts against the ground, so the height of the prefabricated beam perpendicular to the slope surface can be adjusted more conveniently by rotating the elevation fine adjusting bolt 8.

[0049] Figure 5 The connecting structure at the second type of connecting node is enlarged and shown, and the two prefabricated beams at right angles are connected by the first connecting piece 61, and the two end prefabricated beams directly butted on the same straight line are connected by the second connecting piece 62, and the structure of the second connecting piece 62 is shown in Figure 9 , which is made of a single rectangular plate, and the plate is provided with a connecting bolt mounting hole 71. The other structures at the second type of connecting node and the mounting method are the same as those at the first type of connecting node, which will not be described herein.

[0050] Figure 6The enlarged view shows the connection structure at the third type of connection node, the two prefabricated beams which are perpendicular to each other are connected by the first connecting piece 61 at the inner side and connected by the third connecting piece 63 at the outer side, the structure of the third connecting piece 63 is shown in the figure, which is made of two rectangular plates welded together, and the connecting bolt mounting holes 71 are reserved on the two plates. Figure 10 The other structures and installation methods at the third type of connection node are the same as those at the first type of connection node, and will not be described here.

[0051] For the drainage ditch in the application, in one embodiment, it is prefabricated like the prefabricated beam, and the connecting bolts are embedded; in another embodiment, it is made by the method of formwork on site, and the connecting bolts also need to be embedded.

[0052] The construction method of the application has the following steps:

[0053] 1. Use the excavator to brush the slope of the support slope, so that the slope ratio meets the design requirements.

[0054] 2. Set the node anchor rod according to the design requirements.

[0055] 3. Construct and install the drainage ditch;

[0056] 4. Install the prefabricated beam from the bottom of the slope to the top of the slope, first install the longitudinal prefabricated beam, then install the middle transverse prefabricated beam and the top transverse prefabricated beam.

[0057] 5. Each connection node is connected by selecting the appropriate connecting piece from the first connecting piece, the first connecting piece and the first connecting piece according to its type.

[0058] 6. At the connection node using the first connecting piece, use the high-precision leveling bolt to adjust the height of the prefabricated beam perpendicular to the slope, so that the top surface of the prefabricated beam is at the same height.

[0059] 7. Pour concrete and maintain each connection node, and pour the node anchor rod into the node to form a permanent concrete connection node.

[0060] 8. Spray a certain thickness of concrete at the bottom of the prefabricated beam to tightly connect the prefabricated beam with the slope surface and form a whole with the slope surface.

[0061] 9. Backfill a certain thickness of planting soil in the prefabricated beam frame and spray grass seeds for greening.

[0062] 10. The node connecting pieces can be selectively removed and reused.

[0063] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1.A fast-assembled square skeleton revetment structure comprising prefabricated beams, joint connectors and a drainage ditch, characterized in that: the drainage ditch is arranged at the bottom of the fast-assembled square skeleton revetment structure, and the prefabricated beams are arranged in a rectangular grid above the drainage ditch; the joint connectors connect the prefabricated beams and the drainage ditch, and the end faces of the joints between the prefabricated beams and the joint connectors enclose a joint area; the joint area is poured with concrete to tightly connect the prefabricated beams; coupling bolts are pre-buried at the ends of the prefabricated beams and on the drainage ditch, and bolt mounting holes are pre-reserved on the joint connectors; the joint area comprises first joint nodes left by the splicing of four prefabricated beams, second joint nodes left by the splicing of three prefabricated beams, and third joint nodes left by the splicing of two prefabricated beams; the joint connectors are of more than one type, and the first joint nodes, the second joint nodes and the third joint nodes are formed by prefabricated beams and joint connectors of more than one type; the joint connectors comprise first joint connectors connected to the inner sides of two prefabricated beams spliced perpendicularly to each other, third joint connectors connected to the outer sides of two prefabricated beams spliced perpendicularly to each other, and second joint connectors connected to the outer sides of two prefabricated beams directly butted on the same straight line; the first joint connector comprises two side plates, a triangular plate and a bottom adhering plate, the two side plates are vertically arranged and connected perpendicularly to each other to form an L shape, and two right-angle edges of the triangular plate are connected to the two side plates respectively; a bolt mounting hole is pre-reserved on one of the side plates, a bolt slot with an upward opening is pre-reserved on the other side plate, and the bottom adhering plate is arranged at the bottom of the side plate with the bolt slot and extends away from the side plate; the first joint connector has a leveling bolt mounting hole; after the first joint connector is installed and connected to the prefabricated beams, a leveling bolt is inserted, the bottom of the leveling bolt is supported on the slope surface, and rotating the leveling bolt moves the prefabricated beams at the joint of the first joint connector in a direction perpendicular to the slope surface; the prefabricated beams at the joint area of each first joint connector are adjusted to the same height relative to the slope surface by the leveling bolts; the prefabricated beams comprise rectangular section beams and trapezoidal section beams, and the trapezoidal section beams have protruding portions; the longitudinally arranged prefabricated beams and the top transversely arranged prefabricated beams of the fast-assembled square skeleton revetment structure are rectangular section beams; the prefabricated beams transversely arranged on non-top portions of the fast-assembled square skeleton revetment structure are trapezoidal section beams, and the protruding portions of the trapezoidal section beams are arranged at the lower edges; the joint area is pre-punched with joint anchors before pouring; the joint connectors are detachable; the fast-assembled square skeleton revetment structure comprises the following steps: before installation, the slope is brushed by a excavator to adjust the slope; joint anchors are punched according to design requirements; the drainage ditch is installed and arranged; ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The quick assembly square frame revetment structure according to claim 1, characterized in that, ​ ​ ​ 3. The quick assembly square frame revetment structure according to claim 1, characterized in that, ​ 4. The quick assembly square frame revetment structure according to claim 3, characterized in that, ​ 5. A method for installing a quick assembly square frame revetment structure using the quick assembly square frame revetment structure according to claim 3, characterized by, ​ ​ ​ ​ The prefabricated beams are installed from the bottom of the slope to the top of the slope, and the longitudinal prefabricated beams are installed first, and then the middle transverse prefabricated beams and the top transverse prefabricated beams are installed; Each connecting node is connected by selecting appropriate connecting pieces from the first connecting piece, the second connecting piece and the third connecting piece according to the type of the connecting node; the height of the prefabricated beam perpendicular to the slope is adjusted by using the elevation precision flat bolt at the connecting node using the first connecting piece, so that the top surface of the prefabricated beam is at the same height; the connecting nodes are poured with concrete and maintained, and the node anchor rod is poured in the node to form a permanent concrete connecting node; After the installation of the quick assembly square framework slope protection structure is completed, concrete is sprayed at the bottom of the prefabricated beam, so that the prefabricated beam is closely connected with the slope surface and forms an integral whole with the slope surface.

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