Device for constructing dome secondary lining through assembly type supporting system

Abstract

The utility model discloses an assembly type supporting system construction dome secondary lining device, which relates to the technical field of underground engineering, and comprises dome core soil, an inner layer supporting structure and an outer layer supporting structure, the outer layer supporting structure is circumferentially arranged on the peripheral surface of the dome core soil, and dome secondary lining concrete is poured on the peripheral surface of the outer layer supporting structure. The inner surface of the outer-layer supporting structure is provided with the inner-layer supporting structure, and joints of the inner-layer supporting structure and the outer-layer supporting structure are fixedly connected in a staggered mode. According to the device for constructing the dome secondary lining through the assembly type supporting system, the whole supporting system is divided into assembled foundation units, scattered splicing and layer-by-layer installation are carried out, and the construction process of pouring the dome secondary lining concrete layer by layer is carried out, so that the concrete pouring difficulty is reduced, the lining quality is guaranteed, and the construction efficiency is improved. And meanwhile, quick assembly and quick disassembly operation can be achieved by assembling the foundation units, the construction progress is accelerated, the use amount of trolleys is reduced, and cost reduction and efficiency improvement in the construction process are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of underground engineering, in particular to a device for constructing a secondary lining of a dome using an assembled support system. Background Art

[0002] In recent years, my country's underground energy reserves have shown positive development momentum, with an increasing number of large-span caverns entering the planning and construction stages. Secondary lining is a cast-in-place concrete or reinforced concrete lining applied inside the primary support, forming a composite lining with the primary support. Traditional secondary lining is primarily constructed using a lining trolley, offering convenient construction and excellent results. However, the trolley requires significant material investment, requires high hoisting requirements, and requires a long installation and removal cycle.

[0003] However, the dome structure of underground large-span caverns is complex, the span is large, and the working surface is far away from the ground. There are problems such as difficulty for workers to construct, low efficiency of mechanical operation, difficulty in pouring concrete, and inability to guarantee the quality of the lining, and there are safety hazards.

[0004] How to develop a device for constructing the secondary lining of the dome with an assembled support system, realize quick assembly and disassembly of the support system, and achieve cost reduction and efficiency improvement has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a device for constructing a secondary lining of a dome using an assembled support system, so as to solve the problems listed in the background technology.

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

[0007] The utility model discloses a device for constructing a secondary lining of a dome using an assembled support system, comprising a dome core soil, an inner support structure and an outer support structure, wherein the outer support structure is circumferentially arranged on the outer circumference of the dome core soil, the dome secondary lining concrete is poured on the outer circumference of the outer support structure, the inner support structure is installed on the inner surface of the outer support structure, and the inner support structure and the outer support structure are fixedly and staggeredly connected at the joints.

[0008] Preferably, the outer layer support structure includes an assembled basic unit 1 and an assembled basic unit 2, the lower surface of the assembled basic unit 1 is circumferentially arranged on the bottom outer peripheral surface of the dome core soil, and the upper surface of the assembled basic unit 1 is connected to the assembled basic unit 2 via a pin shaft;

[0009] The first assembly basic unit and the second assembly basic unit are connected in sequence through the pin shaft.

[0010] Preferably, the inner layer support structure includes a third assembly basic unit and a fourth assembly basic unit.

[0011] The outer surfaces of the assembly basic unit 3 and the assembly basic unit 4 are fixedly connected to the inner surfaces of the joints of the assembly basic unit 1 and the assembly basic unit 2 in sequence through interlayer screws;

[0012] The assembly basic unit three and the assembly basic unit four are fixedly connected via the pin shaft.

[0013] Preferably, a cotter pin is inserted into one end of the pin shaft.

[0014] Preferably, the first assembly unit, the second assembly unit, the third assembly unit and the fourth assembly unit all adopt a trapezoidal structure, and the upper base of the first assembly unit is a straight line, the lower base of the first assembly unit is an arc, the upper base of the second assembly unit is an arc, and the lower base of the second assembly unit is an inwardly concave broken line;

[0015] The upper base of the assembly basic unit three is a straight line, the lower base of the assembly basic unit three is an outwardly convex broken line, the upper base of the assembly basic unit four is a straight line, and the lower base of the assembly basic unit four is an inwardly concave broken line.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are:

[0017] The utility model discloses a device for constructing a secondary lining of a dome with an assembled support system. The device divides the entire support system into assembled basic units, performs dispersed splicing and installation layer by layer, and pours the secondary lining concrete of the dome layer by layer. The construction process reduces the difficulty of concrete pouring and ensures the quality of the lining. At the same time, the assembled basic units can realize quick assembly and disassembly operations, speeds up the construction progress, reduces the use of trolleys, and is conducive to reducing costs and increasing efficiency during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a front view schematic diagram of the first layer of the assembly of a device for constructing a dome secondary lining using an assembled support system according to the utility model;

[0020] Figure 2 This is a front view schematic diagram of the second layer assembly of a device for constructing a dome secondary lining using an assembled support system according to the utility model;

[0021] Figure 3 This is a front view schematic diagram of the three-layer assembly of a device for constructing a dome secondary lining using an assembled support system according to the utility model;

[0022] Figure 4 This is an enlarged schematic diagram of part A of the utility model;

[0023] Figure 5 This is a schematic diagram of the horizontal connection of the assembled basic units of the utility model;

[0024] Figure 6 The utility model is a three-dimensional assembly diagram of a device for constructing a secondary lining of a dome using an assembled support system.

[0025] Explanation of the accompanying reference numerals: 1. Dome core soil; 2. Dome secondary lining concrete; 3. Assembly foundation unit one; 4. Assembly foundation unit two; 5. Assembly foundation unit three; 6. Assembly foundation unit four; 7. Pin shaft; 8. Split pin; 9. Interlayer screw. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] like Figure 1-6 As shown, a device for constructing a dome secondary lining using an assembled support system includes a dome core soil 1, an inner support structure and an outer support structure. The outer support structure is circumferentially arranged on the outer circumference of the dome core soil 1, and dome secondary lining concrete 2 is cast on the outer circumference of the outer support structure. The inner support structure is installed on the inner surface of the outer support structure, and the inner support structure and the outer support structure are fixedly and staggeredly connected at the joints.

[0028] Specifically, the outer support structure includes an assembly foundation unit 1 3 and an assembly foundation unit 2 4. The lower surface of the assembly foundation unit 1 3 is circumferentially arranged on the bottom outer peripheral surface of the dome core soil 1, and the upper surface of the assembly foundation unit 1 3 is connected to the assembly foundation unit 2 4 via a pin 7.

[0029] The assembly basic unit 1 3 and the assembly basic unit 2 4 are connected in sequence through the pin shaft 7;

[0030] The inner layer support structure includes a third assembly basic unit 5 and a fourth assembly basic unit 6.

[0031] The outer surfaces of the assembly basic unit 3 5 and the assembly basic unit 4 6 are fixedly connected to the inner surfaces of the joints of the assembly basic unit 1 3 and the assembly basic unit 2 4 in sequence through interlayer screws 9;

[0032] Furthermore, the assembly basic unit three 5 and the assembly basic unit four 6 are fixedly connected via the pin shaft 7, which reduces the use of the trolley, enables quick assembly and disassembly, shortens the construction period, and achieves cost reduction and efficiency improvement.

[0033] Specifically, the upper surface of the assembly basic unit 1 3 is fixedly connected to the assembly basic unit 2 4 through the pin shaft 7. Furthermore, a cotter pin 8 is inserted into one end of the pin shaft 7 to prevent the pin shaft from falling off from the connection between the assembly basic unit 3 and the assembly basic unit 4.

[0034] Specifically, the assembly basic unit 1 3, the assembly basic unit 2 4, the assembly basic unit 3 5 and the assembly basic unit 4 6 all adopt a trapezoidal structure, and the upper base of the assembly basic unit 1 3 is a straight line, the lower base of the assembly basic unit 1 3 is an arc, the upper base of the assembly basic unit 2 4 is an arc, and the lower base of the assembly basic unit 2 4 is an inwardly concave broken line;

[0035] The upper base of the assembly basic unit 3 5 is a straight line, the lower base of the assembly basic unit 3 5 is an outward convex broken line, the upper base of the assembly basic unit 4 6 is a straight line, the lower base of the assembly basic unit 4 6 is an inward concave broken line;

[0036] During the installation process, the waists of the assembled basic unit 1 and the assembled basic unit 2 are fixedly connected by the pin shaft and the cotter pin, so that the lower bottom of the assembled basic unit 1 and the upper bottom of the assembled basic unit 2 are connected to form a larger arc to meet the arc surface requirements when pouring the dome concrete;

[0037] The assembly basic unit 3 is arranged at the joint of the assembly basic unit 1 and the assembly basic unit 2, and the lower bottom of the assembly basic unit 3 is fixedly connected to the upper bottom of the assembly basic unit 1 and the lower bottom of the assembly basic unit 2 by interlayer screws, further ensuring the stability of the connection between the assembly basic unit 1 and the assembly basic unit 2;

[0038] The waist of the assembled basic unit 4 is fixedly connected to the waist of the assembled basic unit 3 by means of a pin shaft and a cotter pin, and the upper bottom of the assembled basic unit 4 is fixedly connected to the lower bottom of the assembled basic unit 2 by means of interlayer screws;

[0039] The waists of the basic units assembled on the same layer are fixedly connected by means of pins and cotter pins. The upper and lower bottoms of the basic units assembled on different layers are fixedly connected by inter-layer screws. By modularizing and installing the inner and outer supporting structures in sections, the construction party can quickly install and dismantle the supporting structure, reduce the use of trolleys, shorten the construction period, and ensure the stability and safety of the connection between the inner and outer supporting structures.

[0040] The use method of this utility model:

[0041] Step 1: Level the site and excavate and trim the core soil of the dome;

[0042] Step 2: Install the assembled foundation unit 1, arranging the assembled foundation unit 1 in a circular pattern at the bottom of the outer peripheral surface of the dome core soil;

[0043] Step 3: Install the second assembly base unit, and fix the lower surface of the second assembly base unit to the upper surface of the first assembly base unit through the pin shaft; and insert the cotter pin into the pin hole of the pin shaft to prevent the pin shaft from falling off;

[0044] Step 4: Install the assembled basic unit 3, and fix the outer surface of the assembled basic unit 3 to the joint of the inner surface of the assembled basic unit 1 and the assembled basic unit 2 through the interlayer bolts, so that the assembled basic unit 1 and the assembled basic unit 2 are fixedly connected through the assembled basic unit 3;

[0045] Step 5: Install the assembled basic unit 4, and fix the outer surface of the assembled basic unit 4 to the inner surface of the assembled basic unit 2 through interlayer bolts, and fix the lower surface of the assembled basic unit 4 to the upper surface of the assembled basic unit 3 through a pin shaft, and install a cotter pin in the pin hole of the pin shaft;

[0046] Step 6: Construction of the second lining concrete of the first dome: After fixing the assembled foundation unit 1, assembled foundation unit 2, assembled foundation unit 3 and assembled foundation unit 4 together, pour concrete on the outer surface of the assembled foundation unit 1 and assembled foundation unit 2, and carry out curing and other strengthening operations;

[0047] Step 7: Repeat steps 2 to 6 to complete the second and third layers of concrete lining of the dome;

[0048] Step 8: Dismantle the assembled basic units and carry out the construction steps of supporting first and then dismantling, or supporting last and then dismantling.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for constructing a dome secondary lining using an assembled support system, comprising dome core soil (1), an inner support structure and an outer support structure, characterized in that: An outer layer support structure is arranged in a circumferential manner on the outer peripheral surface of the dome core soil (1); a dome secondary lining concrete (2) is poured on the outer peripheral surface of the outer layer support structure; the inner layer support structure is installed on the inner surface of the outer layer support structure; and the inner layer support structure and the outer layer support structure are fixedly and staggeredly connected at the joints.

2. The device for constructing a dome secondary lining using an assembled support system according to claim 1, characterized in that: The outer layer support structure comprises an assembling foundation unit 1 (3) and an assembling foundation unit 2 (4), the lower surface of the assembling foundation unit 1 (3) is arranged circumferentially on the bottom outer peripheral surface of the dome core soil (1), and the upper surface of the assembling foundation unit 1 (3) is connected to the assembling foundation unit 2 (4) via a pin shaft (7); Furthermore, the first assembly basic unit (3) and the second assembly basic unit (4) are connected in sequence via the pin shaft (7).

3. The device for constructing a dome secondary lining using an assembled support system according to claim 2, characterized in that: The inner layer support structure includes an assembly basic unit three (5) and an assembly basic unit four (6), The outer surfaces of the assembling basic unit three (5) and the assembling basic unit four (6) are fixedly connected to the inner surfaces of the joints of the assembling basic unit one (3) and the assembling basic unit two (4) in sequence through interlayer screws (9); Furthermore, the assembly basic unit three (5) and the assembly basic unit four (6) are fixedly connected via the pin shaft (7).

4. The device for constructing a dome secondary lining using an assembled support system according to claim 3, characterized in that: One end of the pin shaft (7) is plugged with a cotter pin (8).

5. The device for constructing a dome secondary lining using an assembled support system according to claim 4, characterized in that: The assembly basic unit 1 (3), the assembly basic unit 2 (4), the assembly basic unit 3 (5) and the assembly basic unit 4 (6) all adopt a trapezoidal structure, and the upper base of the assembly basic unit 1 (3) is a straight line, the lower base of the assembly basic unit 1 (3) is an arc, the upper base of the assembly basic unit 2 (4) is an arc, and the lower base of the assembly basic unit 2 (4) is an inwardly concave broken line; The upper base of the assembly basic unit three (5) is a straight line, and the lower base of the assembly basic unit three (5) is an outward convex broken line. The upper base of the assembly basic unit four (6) is a straight line, and the lower base of the assembly basic unit four (6) is an inward concave broken line.

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