Large-span underground tank cavern supporting structure

Abstract

The utility model discloses a large span underground tank cavern support structure, the tank cavern comprises a tank body and a dome arranged above the tank body, one side of the tank body is provided with a lower channel communicated with the tank body, one side of the dome is provided with an upper channel communicated with the dome, and the lower channel is communicated with the dome. A vertical shaft used for deslagging is arranged between the upper channel and the lower channel, the supporting structure comprises a tank temporary supporting assembly and at least one tank pouring supporting assembly which can be switched for use, and the tank temporary supporting assembly comprises a plurality of tank temporary supporting steel frames which are horizontally arranged at intervals and used for temporarily supporting the tank. The tank body temporary supporting steel frame is detachably connected with the tank body, the tank body pouring supporting assembly is used for supporting the tank body, and a plurality of dome spray anchor rods are inserted into the dome. The supporting structure has a good supporting effect on the tank body grotto, V-shaped surrounding rock and soft rock are prevented from collapsing, the stability of the tank body grotto is improved, and the construction safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a large-span underground tank cavern support structure. Background Art

[0002] A tunnel is an underground passage through surrounding soil, earth or rock, usually closed at both ends except for an entrance and exit, and may be used for pedestrian or vehicular road traffic, rail traffic, or canals.

[0003] Large-span underground tunnels generally use tanks. During construction, the tank caverns are excavated. Attention should be paid to timely support during excavation, especially for V-shaped surrounding rocks and soft rocks. After excavation, steel bars should be tied to the inner wall of the tank body before pouring. The existing construction scheme is not suitable for V-shaped surrounding rocks and soft rocks during tank construction. It is easy to collapse during tank construction, and the tank body may also sink during tying steel bars and pouring. The construction safety risk is high and the support effect is poor. Therefore, a new technical solution is urgently needed to solve at least one of the above technical problems. Summary of the invention

[0004] In view of the above-mentioned deficiencies, the purpose of the utility model is to provide a large-span underground tank cavern support structure, which has a good supporting effect on the tank cavern, prevents V-shaped surrounding rock and soft rock collapse, enhances the stability of the tank cavern, and improves construction safety.

[0005] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the utility model is:

[0006] A large-span underground tank cavern support structure, characterized in that the tank cavern comprises a tank body and a dome arranged above the tank body, a lower passage communicating with the tank body is arranged on one side of the tank body, an upper passage communicating with the dome is arranged on one side of the dome, and a vertical shaft for slag discharge is arranged between the upper passage and the lower passage;

[0007] The support structure includes a tank temporary support assembly that can be switched and at least one tank casting support assembly. The tank temporary support assembly includes a plurality of horizontally spaced temporary tank support steel frames for temporarily supporting the tank. The tank temporary support steel frames are detachably connected to the tank. The tank casting support assembly is used to support the tank. The dome is provided with a plurality of dome anchor rods.

[0008] As a preferred technical solution, the tank body casting support assembly includes a tank body full-height bracket, an adjustable top support arranged on the side of the tank body full-height bracket facing the inner wall of the tank body, a distribution main rib arranged on the side of the adjustable top support facing the inner wall of the tank body, and a plurality of distribution secondary ribs detachably arranged on the side of the distribution main rib facing the inner wall of the tank body.

[0009] As a preferred technical solution, the number of the tank body casting support assemblies is 2, and the 2 tank body casting support assemblies are stacked.

[0010] As a preferred technical solution, the tank body full-chamber support includes a plurality of criss-crossed horizontal steel pipes and vertical steel pipes, and a plurality of oblique steel pipes, the horizontal steel pipes are detachably connected to the vertical steel pipes, and the oblique steel pipes are detachably connected to the horizontal steel pipes.

[0011] As a preferred technical solution, a cushion layer is provided at the bottom of the tank body, and the tank body full-chamber bracket is mounted on the upper side of the cushion layer.

[0012] As a preferred technical solution, the temporary tank support steel frame is in the shape of a circular ring, and the temporary tank support steel frame is provided with a plurality of connection holes penetrating the frame in the radial direction.

[0013] As a preferred technical solution, the material of the distribution main ribs is channel steel.

[0014] As a preferred technical solution, the distribution secondary flute is a double steel pipe.

[0015] As a preferred technical solution, the thickness of the cushion layer is 10cm-15cm.

[0016] As a preferred technical solution, the cushion layer is made of C15 concrete.

[0017] Compared with the traditional technical solution, the beneficial effects of the utility model are:

[0018] 1) The upper passage is convenient for construction workers to enter the dome for construction and transport construction equipment to the dome. The lower passage is convenient for construction workers to enter the tank for construction and transport construction equipment to the tank. The temporary support steel frame of the tank supports the tank cavern during excavation to improve excavation stability. The tank casting support assembly can form support during tying steel bars and casting to improve construction safety.

[0019] 2) The adjustable top support can adjust the spacing so that the main distribution ribs and the secondary distribution ribs are in contact with the inner wall of the tank;

[0020] 3) The number of tank casting support components is set according to the height of the tank cavity;

[0021] 4) The cushion layer can strengthen the soil strength at the bottom of the tank, prevent the bottom of the tank from settling, and facilitate the support of the full-body bracket of the tank;

[0022] 5) The circular temporary support steel frame of the tank body provides good support for the tank body, further improving the excavation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A structural diagram of a tank cavern provided for a preferred embodiment of the utility model;

[0024] Figure 2 A structural diagram of a support structure provided for a preferred embodiment of the utility model;

[0025] Figure 3 A structural diagram of a support structure provided for a preferred embodiment of the utility model;

[0026] Figure 4 A structural diagram of a supporting structure provided for a preferred embodiment of the utility model.

[0027] exist Figure 1-Figure 4 Among them, 1. tank body; 101. primary support of tank body; 102. secondary lining of tank body; 2. dome; 201. primary support of dome; 202. secondary lining of dome; 3. lower passage; 4. upper passage; 5. vertical shaft; 6. temporary support steel frame of tank body; 601. connecting hole; 7. dome anchor rod; 8. full-chamber support of tank body; 801. horizontal steel pipe; 802. vertical steel pipe; 803. oblique steel pipe; 9. adjustable top support; 10. distribution of main ribs; 11. distribution of secondary ribs; 12. cushion layer; 13. distribution of connecting rods; 14. distribution of fixing plates; 15. distribution of plug rods; 16. tank body anchor rods. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "top", "bottom", "left", "right", "front", "back", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Please refer to Figure 1-Figure 4An embodiment of the utility model provides a large-span underground tank cavern support structure, wherein the tank cavern comprises a tank body 1, a dome 2 arranged above the tank body 1, a lower channel 3 connected thereto is arranged on one side of the tank body 1, an upper channel 4 connected thereto is arranged on one side of the dome 2, a vertical shaft 5 for slag discharge is arranged between the upper channel 4 and the lower channel 3, the support structure comprises a tank temporary support assembly that can be switched and at least one tank casting support assembly, the tank temporary support assembly comprises a plurality of tank temporary support steel frames 6 arranged at intervals horizontally for temporarily supporting the tank body 1, The temporary tank support steel frame 6 is detachably connected to the tank body, and the tank casting support assembly is used to support the tank body 1. The dome is inserted with a plurality of dome anchor rods 7, and the dome anchor rods 7 are arranged in a radial shape. The upper channel 4 is convenient for construction personnel to enter the dome 2 for construction and transport construction equipment to the dome 2. The lower channel 3 is convenient for construction personnel to enter the tank body 1 for construction and transport construction equipment to the tank body 1, and pour the dome 2 debris into the lower channel 3. The temporary tank support steel frame 6 supports the tank body 1 during excavation to improve the excavation stability. The tank casting support assembly can form support when tying steel bars and pouring, thereby improving construction safety.

[0031] like Figure 1-Figure 4 As shown, the tank body casting support assembly includes a tank body full-height support 8, an adjustable top support 9 arranged on the tank body full-height support 8 facing the inner wall side of the tank body 1, a distribution main rib 10 arranged on the adjustable top support 9 facing the inner wall side of the tank body 1, and a plurality of distribution secondary ribs 11 detachably arranged on the distribution main rib 10 facing the inner wall side of the tank body 1. The adjustable top support 9 can adjust the spacing to cast the tank body secondary lining 102. Before casting the tank body secondary lining 102, the tank body 1 also needs to drill a tank body anchor rod 16 into the inner wall of the tank body 1 and form a tank body primary support 101.

[0032] like Figure 1-Figure 4 As shown, the number of the tank body casting support components is 2, and the 2 tank body casting support components are stacked. The number of the tank body casting support components is set according to the height of the tank body 1, which is convenient for tying steel bars, installing formwork and pouring concrete. The tank body secondary lining 102 is cast in two times. After the first section of steel bars, the tank body full-height bracket 8, and the formwork are installed, concrete pouring is carried out. After the second section of steel bars, the tank body full-height bracket 8, and the formwork are installed, concrete pouring is carried out.

[0033] like Figure 1-Figure 4 As shown, the tank body full-chamber support 8 includes a plurality of criss-crossed horizontal steel pipes 801 and vertical steel pipes 802, and a plurality of oblique steel pipes 803. The horizontal steel pipes 801 are detachably connected to the vertical steel pipes 802, and the oblique steel pipes 803 are detachably connected to the horizontal steel pipes 801. The oblique steel pipes 803 can enhance the overall strength of the tank body full-chamber support 8.

[0034] like Figure 1-Figure 4 As shown, a cushion layer 12 is provided at the bottom of the tank body, and the tank body full-chamber bracket 8 is mounted on the upper side of the cushion layer 12. The cushion layer 12 is made of C15 concrete. The cushion layer 12 can strengthen the soil strength at the bottom of the tank body 1, prevent the bottom of the tank body 1 from sinking, and facilitate supporting the tank body full-chamber bracket 8.

[0035] like Figure 1-Figure 4 As shown, the temporary support steel frame 6 of the tank body is in the shape of a circular ring, and is provided with a plurality of connecting holes 601 which penetrate the temporary support steel frame 6 in the radial direction, and two of the connecting holes 601 form a group, and the angle formed by the central axes of the two connecting holes 601 in the same group is 20°, which is used to connect the temporary support steel frame 6 of the tank body to the inner wall of the tank body 1.

[0036] like Figure 1-Figure 4 As shown, the material of the distribution main rib 10 is channel steel or double-screen channel steel, which is light in weight and high in strength.

[0037] like Figure 1-Figure 4 As shown, the distribution secondary rib 11 is a double steel pipe, the double steel pipes are arranged side by side, the distribution rod 15 is inserted between the double steel pipes, and the distribution fixing plate 14 is fixedly installed between the double steel pipes. The distribution fixing plate 14 is provided with a distribution connecting rod 13 on the side facing the tank body full-chamber bracket 8, and the structural strength is high.

[0038] like Figure 1-Figure 4 As shown, the thickness of the cushion layer 12 is 10 cm-15 cm, and the thickness of the cushion layer 12 is set according to the soil strength.

[0039] like Figure 1-Figure 4 As shown, a plurality of dome anchor rods 7 are drilled into the dome 2 to form a primary dome support 201, and a secondary dome lining 202 is poured.

[0040] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is set forth to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in the specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly set forth in the specification in a similar manner.

[0041] Unless otherwise specified, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0042] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0043] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0044] It should be understood that the above description is for illustration and not for limitation. By reading the above description, many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by these claims. For the purpose of comprehensiveness, all articles and references, including the disclosures of patent applications and announcements, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to abandon the subject matter, nor should it be considered that the inventor has not considered the subject matter as part of the disclosed utility model subject matter.

Claims

1. A large-span underground tank cavern support structure, characterized in that: The tank cavern comprises a tank body and a dome disposed above the tank body, a lower passage communicating with the tank body is disposed on one side of the tank body, an upper passage communicating with the dome is disposed on one side of the dome, and a vertical shaft for slag discharge is disposed between the upper passage and the lower passage; The support structure includes a tank temporary support assembly that can be switched and at least one tank casting support assembly. The tank temporary support assembly includes a plurality of horizontally spaced temporary tank support steel frames for temporarily supporting the tank. The tank temporary support steel frames are detachably connected to the tank. The tank casting support assembly is used to support the tank. The dome is provided with a plurality of dome anchor rods.

2. The large-span underground tank cavern support structure according to claim 1 is characterized in that: The tank body casting support assembly includes a tank body full-chamber bracket, an adjustable top support arranged on the side of the tank body full-chamber bracket facing the inner wall of the tank body, a distribution main rib arranged on the side of the adjustable top support facing the inner wall of the tank body, and a plurality of distribution secondary ribs detachably arranged on the side of the distribution main rib facing the inner wall of the tank body.

3. The large-span underground tank cavern support structure according to claim 1 is characterized in that: The number of the tank body casting support assemblies is 2, and the 2 tank body casting support assemblies are stacked.

4. The large-span underground tank cavern support structure according to claim 2 is characterized in that: The tank body full-chamber support includes a plurality of crisscrossed horizontal steel pipes and vertical steel pipes, and a plurality of oblique steel pipes. The horizontal steel pipes are detachably connected to the vertical steel pipes, and the oblique steel pipes are detachably connected to the horizontal steel pipes.

5. The large-span underground tank cavern support structure according to claim 2 is characterized in that: A cushion layer is arranged at the bottom of the tank body, and the tank body full-chamber bracket is mounted on the upper side of the cushion layer.

6. The large-span underground tank cavern support structure according to claim 1 is characterized in that: The temporary tank support steel frame is in the shape of a circular ring and is provided with a plurality of connection holes penetrating the temporary tank support steel frame in the radial direction.

7. The large-span underground tank cavern support structure according to claim 2 is characterized in that: The material of the distribution main rib is channel steel.

8. The large-span underground tank cavern support structure according to claim 2 is characterized in that: The distribution secondary ribs are double steel pipes.

9. The large-span underground tank cavern support structure according to claim 5, characterized in that: The thickness of the cushion layer is 10cm-15cm.

10. The large-span underground tank cavern support structure according to claim 5, characterized in that: The cushion layer is made of C15 concrete.

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