CN214330641U - Large-section large-gradient tunnel lining formwork supporting system - Google Patents
Large-section large-gradient tunnel lining formwork supporting system Download PDFInfo
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- CN214330641U CN214330641U CN202022945378.2U CN202022945378U CN214330641U CN 214330641 U CN214330641 U CN 214330641U CN 202022945378 U CN202022945378 U CN 202022945378U CN 214330641 U CN214330641 U CN 214330641U
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Abstract
The utility model relates to a large-section large-gradient tunnel lining template supporting system, which comprises a buttress assembly and at least one group of movable template assemblies; the buttress assemblies are arranged on two sides of the tunnel at positions corresponding to the side walls; the movable formwork component is movably arranged above the buttress component; the movable formwork assembly comprises a combined steel formwork for arch wall pouring construction. The utility model discloses an through adopting the movable mould board subassembly, its walking jacking system of suitable adjustment is applicable to the great condition of on-the-spot tunnel slope, and the suitability is strong.
Description
Technical Field
The utility model relates to a tunnel engineering technical field especially relates to a big section heavy grade tunnel lining template braced system.
Background
The secondary lining (called as secondary lining for short) is the lining of cast concrete or reinforced concrete which is constructed on the inner side of the primary support during the construction of tunnel engineering. The secondary lining and the primary support form a composite lining together; the secondary lining bears the load acting on the secondary lining due to possible deterioration of the tunnel primary support, or additional load due to soft rock creep, changes in environmental conditions, etc., and as a safety reserve.
In the construction of the tunnel secondary lining arch wall, an integral lining trolley or a full framing scaffold is generally adopted for construction. However, for a tunnel with a large section size and large gradient change in large karst cave geology, a bridge in the tunnel needs to be constructed first, and then arch wall lining construction is carried out, so that the existing template support system cannot be well adapted to construction.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims to overcome shortcoming and not enough among the prior art, provide a big section heavy grade tunnel lining template braced system.
A large-section large-gradient tunnel lining formwork supporting system comprises a buttress assembly and at least one group of movable formwork assemblies; the buttress assemblies are arranged on two sides of the tunnel at positions corresponding to the side walls; the movable formwork component is movably arranged above the buttress component; the movable formwork assembly comprises a combined steel formwork for arch wall pouring construction.
Further, the buttress assembly comprises a comb-shaped truss and double-spliced longitudinal I-shaped steel; the comb-shaped truss is arranged on two sides of the tunnel at the position corresponding to the side wall, and the double-spliced longitudinal I-shaped steel is arranged above the comb-shaped truss.
Further, the comb-shaped truss is an I16 comb-shaped truss; the double-spliced longitudinal I-shaped steel is I36I-shaped steel.
Furthermore, the movable template assembly also comprises two groups of walking jacking systems, a Bailey beam and an arch frame; steel rails are arranged above the double-spliced longitudinal I-shaped steel on the two sides, and the two groups of walking jacking systems are respectively arranged on the steel rails on the two sides; the bailey beam is arranged above the walking jacking system; the arch center is arranged on the Bailey beam; the combined steel template is arranged on the arch frame;
further, the Bailey beam is a double-row single-layer standard 321 Bailey beam.
Furthermore, a first longitudinal I-shaped steel is arranged on the walking jacking system, a protective steel plate is paved on the longitudinal I-shaped steel, and the Bailey beam is arranged on the protective steel plate.
Furthermore, a second longitudinal I-steel is arranged above the Bailey beam, and the arch frame is connected with the Bailey beam through the second I-steel.
Further, the first longitudinal I-shaped steel is I40 longitudinal I-shaped steel; the second longitudinal I-shaped steel is I20 longitudinal I-shaped steel.
Furthermore, a plurality of screw rod jacking supports are arranged on the walking jacking system.
Furthermore, a rail wheel set which is arranged on the steel rail in a rolling mode is arranged below the walking jacking system.
The utility model discloses following beneficial effect has:
(1) by adopting the comb-shaped truss, the construction of the bridge in the tunnel in the large karst cave geology is met, and the comb-shaped truss can be used as a moving platform for moving the template assembly, so that the construction requirement of the working condition is well met;
(2) by adopting the movable template assembly, the walking jacking system can be suitable for the situation of large gradient of the on-site tunnel by properly adjusting the walking jacking system, and the applicability is strong;
(3) the comb-shaped truss is checked, calculated and arranged according to the stress condition, and does not need to be repeatedly installed after one-time installation is successful;
(4) by adopting the movable template assembly, a large amount of manpower is not required to be consumed, and the operation is simple;
(5) by adopting the Bailey beam to support the top arch frame, the overall structure is light on the premise of ensuring the overall rigidity and stability, and the hoisting and transportation are convenient;
(6) the utility model discloses think about unique, simple structure, compact reasonable, working property safe and reliable, flexible operation laborsaving, have suitable construction use, be convenient for advantage such as promote.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the construction of a cross-sectional lining of the lining form bracing system of the present invention;
FIG. 2 is a schematic side lining construction of the lining form panel support system of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
In the figure: 10. a buttress assembly; 11. a comb-shaped truss; 12. double-spliced longitudinal I-shaped steel; 121. a steel rail; 20. moving the formwork assembly; 21. a walking jacking system; 211. supporting a screw rod; 212. a rail wheel set; 22. a first longitudinal i-beam; 23. a protective steel plate; 24. a Bailey beam; 25. a second longitudinal i-beam; 26. an arch frame; 27. and (5) combining the steel templates.
Detailed Description
Referring to fig. 1 to 3, the formwork support system for a large-section large-gradient tunnel lining of the present embodiment includes a buttress assembly 10 and three sets of movable formwork assemblies 20;
specifically, the buttress assemblies 10 are arranged on two sides of the tunnel at positions corresponding to the side walls;
more specifically, the buttress assembly 10 comprises a comb-shaped truss 11 and double-spliced longitudinal I-shaped steel 12; the positions of the comb-shaped truss 11 corresponding to the side walls are arranged on the two sides of the tunnel, and the double-spliced longitudinal I-shaped steel 12 is arranged above the comb-shaped truss 11;
specifically, the movable formwork assembly 20 is movably arranged above the buttress assembly 10;
more specifically, the movable formwork assembly 20 comprises a combined steel formwork 27 for arch wall pouring construction, two sets of walking jacking systems 21, a bailey beam 24 and an arch frame 26; a steel rail 121 is arranged above the double-spliced longitudinal I-shaped steel 12 on the two sides, and the two groups of walking jacking systems 21 are respectively arranged on the steel rails 121 on the two sides; the bailey beam 24 is arranged above the walking jacking system 21; the arch 26 is arranged on the Bailey beam 24; the combined steel template 27 is arranged on the arch frame 26;
more specifically, a first longitudinal i-beam 22 is arranged on the walking jacking system 21, a protective steel plate 23 is laid on the longitudinal i-beam, and the bailey beam 24 is arranged on the protective steel plate 23; a second longitudinal I-steel 25 is arranged above the Bailey beam 24, and the arch frame 26 is connected with the Bailey beam 24 through the second I-steel; the first longitudinal I-beam 22 is I40 longitudinal I-beam; the second longitudinal I-shaped steel 25 is I20 longitudinal I-shaped steel;
more specifically, the walking jacking system 21 is provided with a plurality of screw rod jacking supports 211;
more specifically, a rail wheel set 212 arranged on the steel rail 121 in a rolling manner is arranged below the walking jacking system 21;
more specifically, the comb-shaped truss 11 in this embodiment is an I16 comb-shaped truss 11; the double-spliced longitudinal I-shaped steel 12 is I36I-shaped steel; the Bailey beams 24 are double-row single-layer standard 321 Bailey beams 24.
The working process of the embodiment:
the longitudinal length of the movable formwork assembly 20 is 8m, the effective pouring length is 6m, and after each circulation pouring is completed, the movable formwork assembly finishes the frame falling through adjusting a screw rod jacking 211 of the walking jacking system 21 and moves to the next construction position. 6m of arch part is poured each time, the pouring speed is controlled to be 0.5m/h, and 18m3/h is poured at the two sides simultaneously.
Compared with the prior art, the utility model discloses think about unique, simple structure, compact reasonable, working property safe and reliable, flexible operation laborsaving, have suitable construction use, be convenient for promote etc. advantage.
The utility model adopts the comb-shaped truss, which not only meets the construction of the bridge in the tunnel in the large karst cave geology, but also can be used as a moving platform for moving the template component, thereby well realizing the construction requirement of the working condition;
by adopting the movable template assembly, the walking jacking system can be suitable for the situation of large gradient of the on-site tunnel by properly adjusting the walking jacking system, and the applicability is strong;
the comb-shaped truss is checked, calculated and arranged according to the stress condition, and does not need to be repeatedly installed after one-time installation is successful; by adopting the movable template assembly, a large amount of manpower is not required to be consumed, and the operation is simple;
through adopting the bailey beam to support the top arch frame, under the prerequisite of guaranteeing integral rigidity and steadiness for overall structure lightweight, convenient hoist and mount and transportation.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A large-section large-gradient tunnel lining formwork supporting system is characterized by comprising
The pier components are arranged on two sides of the tunnel at positions corresponding to the side walls;
at least one set of moving formwork assemblies movably disposed above the pier assemblies; the movable formwork assembly comprises a combined steel formwork for arch wall pouring construction.
2. The large-section large-gradient tunnel lining formwork support system according to claim 1, wherein the buttress assembly comprises a comb-shaped truss and double-spliced longitudinal I-steel; the comb-shaped truss is arranged on two sides of the tunnel at the position corresponding to the side wall, and the double-spliced longitudinal I-shaped steel is arranged above the comb-shaped truss.
3. The large-section large-gradient tunnel lining formwork support system according to claim 2, wherein the comb-shaped truss is an I16 comb-shaped truss; the double-spliced longitudinal I-shaped steel is I36I-shaped steel.
4. The large-section large-gradient tunnel lining formwork support system according to claim 3, wherein the movable formwork assembly further comprises two sets of walking jacking systems, Bailey beams and arches; steel rails are arranged above the double-spliced longitudinal I-shaped steel on the two sides, and the two groups of walking jacking systems are respectively arranged on the steel rails on the two sides; the bailey beam is arranged above the walking jacking system; the arch center is arranged on the Bailey beam; the combined steel template is arranged on the arch frame.
5. The large-section large-gradient tunnel lining formwork support system according to claim 4, wherein the Bailey beams are double-row single-layer standard 321 Bailey beams.
6. The large-section large-gradient tunnel lining formwork supporting system according to claim 4, wherein a first longitudinal I-shaped steel is arranged on the walking jacking system, a protective steel plate is paved on the longitudinal I-shaped steel, and the Bailey beam is arranged on the protective steel plate.
7. The large-section large-gradient tunnel lining formwork supporting system as claimed in claim 6, wherein a second longitudinal I-steel is arranged above the Bailey beam, and the arch frame and the Bailey beam are connected through the second I-steel.
8. The large-section large-gradient tunnel lining formwork support system of claim 7, wherein the first longitudinal I-beam is I40 longitudinal I-beam; the second longitudinal I-shaped steel is I20 longitudinal I-shaped steel.
9. The large-section large-gradient tunnel lining formwork supporting system as claimed in any one of claims 4 to 8, wherein a plurality of screw rod jacking supports are arranged on the walking jacking system.
10. The large-section large-gradient tunnel lining formwork supporting system according to claim 9, wherein a rail wheel set arranged on a steel rail in a rolling mode is arranged below the walking jacking system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945378.2U CN214330641U (en) | 2020-12-10 | 2020-12-10 | Large-section large-gradient tunnel lining formwork supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945378.2U CN214330641U (en) | 2020-12-10 | 2020-12-10 | Large-section large-gradient tunnel lining formwork supporting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214330641U true CN214330641U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022945378.2U Active CN214330641U (en) | 2020-12-10 | 2020-12-10 | Large-section large-gradient tunnel lining formwork supporting system |
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| CN (1) | CN214330641U (en) |
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2020
- 2020-12-10 CN CN202022945378.2U patent/CN214330641U/en active Active
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