CN211665792U - Self-anchored formwork support system for connecting channel - Google Patents
Self-anchored formwork support system for connecting channel Download PDFInfo
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- CN211665792U CN211665792U CN201921827770.8U CN201921827770U CN211665792U CN 211665792 U CN211665792 U CN 211665792U CN 201921827770 U CN201921827770 U CN 201921827770U CN 211665792 U CN211665792 U CN 211665792U
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Abstract
The utility model belongs to the technical field of subway construction, and relates to a connecting channel self-anchored formwork support system and a construction method, wherein a first steel formwork and a second steel formwork are assembled by small steel moulds, which can be repeatedly used, and simultaneously can ensure the radian of a structural arch wall, and the rigidity can completely meet the requirements; the pre-bent I-shaped steel is used as a main keel, and self-anchoring ribs are reserved for fixing the I-shaped steel when the structural bottom plate is poured, so that the stress is better, a larger operation space is released, and the pouring of secondary lining concrete is facilitated; the simple support is used for reinforcing the I-shaped steel, the I-shaped steel is used as an operation platform for pouring the secondary lining concrete, the passing condition of operation personnel is good, and meanwhile, the stability of the whole formwork support system is also improved.
Description
The technical field is as follows:
the utility model belongs to the technical field of the subway construction, a contact passageway is from anchor formula formwork support system is related to, uses the formwork engineering of subway contact passageway two lining construction, through the formwork support system of design, release contact passageway operation space that can be very big, safe and reliable, convenient operation.
Background art:
the communication channel in the urban subway has multiple functions of ventilation, fire control and the like, generally, after the construction of a main tunnel is completed, the existing subway communication channel is excavated by adopting a subsurface excavation method, after the initial support excavation is completed, the working space of a secondary lining is narrow and only about 3m wide and 3m high, and the top of the secondary lining has a larger radian, the conventional secondary lining adopts wood boards, square wood and fastener steel pipes to form a template support system, the support body is too dense, the working space is smaller, the difficulty in erecting the support template is increased, the operating efficiency of personnel is low, and the quality of the erected support is poor; the concrete pouring is not easy to operate, and the quality of the second lining is not easy to guarantee; the radian of the second liner arch top template is smaller, the rigidity of a template system assembled by cutting the wood board into small blocks is smaller, and the operation is complex; when the formwork support is dismantled, the material damage rate is high, and the reuse rate is low.
The invention content is as follows:
the utility model discloses a shortcoming that prior art exists is overcome to the invention aim at, in the construction process to two linings of current subway contact passageway, the contact passageway is narrow and small, and the top radian is less, adopt the template support system of ordinary steel pipe scaffold frame and wood pattern installation, difficult operation, there is the safety risk, and pour the relatively poor shortcoming of two linings quality of accomplishing, the design provides a contact passageway from anchor formula template support system, adopt the I-steel of preflex I14 as the main joist, the template adopts the little steel mould of combination formula, and reserve from the anchor bar at the bottom plate, and with the I-steel of bolt fastening, it carries out the secondary reinforcement to assist again with simple and easy support.
In order to achieve the above object, the communication channel of the present invention isThe main structure of the anchor type formwork support system comprises a first steel formwork, a second steel formwork, a ground anchor bolt, a first double-spliced steel pipe, a steel wedge block, a bolt, a second double-spliced steel pipe, an upper I-shaped steel, a lower I-shaped steel, steel pipes, a bolt cap and a bolt buckle, wherein the upper I-shaped steel and the two lower I-shaped steels form a main keel of an arch structure, the longitudinal distance between the adjacent upper I-shaped steels is 60cm, the upper I-shaped steel is pre-bent according to the arc size of a structural arch wall, a steel plate is welded at the joint of the upper I-shaped steel and the two lower I-shaped steels and is fixedly connected through four bolts with the diameter of 20mm, the first steel formwork with the length of × and the width of 120 × 20cm is installed on the arc inner side wall of the structural arch wall, the second steel formwork with the length of × and the width of 120 × 30cm is installed on the inner side
The concrete structure is internally added with a 30-45-degree bending degree and symmetrically installed at a position 15cm above a structural bottom plate, and a ground anchor bolt is fixedly connected with lower I-shaped steel through a first double-spliced steel pipe, a bolt buckle and a bolt cap in sequence; welding a steel wedge block at the arc-shaped part of the top of the upper I-shaped steel for reinforcing the support top of the steel pipe; the fastener type support is composed of three rows of transverse and longitudinal steel pipes, the distance is 90cm, the step pitch is 85cm, the longitudinal distance is 60cm, a jacking support is adopted to jack the upper I-shaped steel and the lower I-shaped steel, and the fastener type support is fixedly connected with the upper I-shaped steel through a second double-spliced steel pipe.
Contact passageway is from anchor formula formwork support system's work progress does:
(1) prefabricating a ground anchor bolt, upper I-shaped steel, lower I-shaped steel, a first steel template and a second steel template by adopting the prior art, and preparing a steel pipe and a fastener for preparing a fastener type bracket;
(2) pouring a structural bottom plate, wherein the side wall construction joint is positioned at the position 35cm above the structural bottom plate, and embedding a ground anchor bolt with the diameter of 22mm in advance before pouring;
(3) laying waterproof boards and reinforcing steel bars of the structural arch wall by adopting the prior art;
(4) installing a second steel template and lower I-shaped steel;
(5) installing an upper I-shaped steel, and fixedly connecting the upper I-shaped steel with a lower I-shaped steel;
(6) erecting a fastener type bracket by using a steel pipe, and installing a first steel template;
(7) fixing the lower I-shaped steel by adopting an earth anchor bolt, a bolt buckle and a bolt cap;
(8) installing a steel wedge block, supporting the upper I-shaped steel and the lower I-shaped steel on the support through a top support, and paving a scaffold as a concrete operation platform;
(9) adopting the prior art to pour the concrete of the structural arch wall;
(10) and sequentially detaching the fastener type support, loosening the ground anchor bolt, detaching the upper I-shaped steel, the lower I-shaped steel, the first steel formwork and the second steel formwork, and moving to the next operation point.
The utility model relates to a pour the process and all adopt prior art and current thick liquids.
Compared with the prior art, the utility model, the first steel form and the second steel form are assembled by small steel forms, which can be repeatedly used, and simultaneously, the radian of the arch wall of the structure can be ensured, and the rigidity can completely meet the requirement; the pre-bent I-shaped steel is used as a main keel, and self-anchoring ribs are reserved for fixing the I-shaped steel when the structural bottom plate is poured, so that the stress is better, a larger operation space is released, and the pouring of secondary lining concrete is facilitated; the simple support is used for reinforcing the I-shaped steel, the I-shaped steel is used as an operation platform for pouring the secondary lining concrete, the passing condition of operation personnel is good, and meanwhile, the stability of the whole formwork support system is also improved.
Description of the drawings:
fig. 1 is the main structure principle schematic diagram of the contact channel self-anchored formwork support system of the present invention.
Figure 2 is the utility model discloses a main part structure cross-sectional view of contact passageway self-anchorage formula formwork support system.
Fig. 3 is the utility model discloses a ground anchor bolt and I-shaped steel connection structure sketch map down.
Figure 4 is the utility model discloses a ground anchor bolt and I-steel connection structure side view down.
The specific implementation mode is as follows:
the present invention will be further explained by the following embodiments with reference to the accompanying drawings.
Example (b):
the main body structure of the communication channel self-anchored formwork support system comprises a first steel formwork 1, a second steel formwork 2, an earth anchor bolt 3, a first double-spliced steel pipe 4, a steel wedge block 5, a bolt 6, a second double-spliced steel pipe 7, an upper I-steel 10, a lower I-steel 11, a steel pipe 12, a bolt cap 13 and a bolt buckle 14, wherein the upper I-steel 10 and the two lower I-steels 11 form a main keel of an arch structure, the longitudinal distance between the adjacent upper I-steels 10 is 60cm, the upper I-steel 10 is pre-bent according to the arc size of a structural arch wall 9, steel plates are welded at the joint of the upper I-steel 10 and the two lower I-steel 11 and are fixedly connected through four bolts 6 with the diameter of 20mm, the first steel formwork 1 with the length of × and the width of 120 × cm is installed on the arc inner side wall of the structural arch wall 9, the second steel formwork 2 with the width of 120 × cm is installed on the vertical side wall, and the earth anchor bolt 3 is provided with a screw buckle
The angle of 30-45 degrees is increased in the concrete structure, the steel bars are symmetrically arranged 15cm above a structural bottom plate 8, and the ground anchor bolt 3 is fixedly connected with the I-shaped steel 11 sequentially through the first double-spliced steel pipe 4, the bolt buckle 14 and the bolt cap 13; a steel wedge block 5 is welded at the arc-shaped part of the top of the upper I-shaped steel 10 and used for reinforcing a supporting top by a steel pipe 12; the three rows of transverse and longitudinal steel pipes 12 form a fastener type support, the distance is 90cm, the step pitch is 85cm, the longitudinal distance is 60cm, a top support 16 is adopted to support an upper I-shaped steel 10 and a lower I-shaped steel 11, and the fastener type support is fixedly connected with the upper I-shaped steel through a second double-spliced steel pipe 7.
The construction process of the self-anchored formwork support system of the communication channel in the embodiment is as follows:
(1) prefabricating a ground anchor bolt 3, upper I-shaped steel 10, lower I-shaped steel 11, a first steel template 1 and a second steel template 2 in the prior art, and preparing materials such as steel pipes, fasteners and the like for preparing a fastener type bracket;
(2) adopting the prior art to pour the structural bottom plate 8, wherein the side wall construction joint 15 is positioned at the position of 35cm above the structural bottom plate 8, and embedding the ground anchor bolt 3 with the diameter of 22mm in advance before pouring;
(3) laying waterproof boards and reinforcing steel bars of the arch wall 9 of the laying structure;
(4) installing a second steel template 2 and lower I-shaped steel 11;
(5) installing an upper I-beam 10, and fixedly connecting the upper I-beam 10 with a lower I-beam 11;
(6) erecting a fastener type bracket by using a steel pipe 12, and installing a first steel template 1;
(7) fixing the lower I-shaped steel 11 by using an earth anchor bolt 3, a bolt buckle 14 and a bolt cap 13;
(8) installing a steel wedge block 5, supporting an upper I-shaped steel 10 and a lower I-shaped steel 11 on a support 9 through a jacking support, and paving a scaffold as a concrete operation platform;
(9) adopting the prior art to pour the concrete of the structural arch wall 9;
(10) and (3) sequentially detaching the fastener type bracket, loosening the anchor bolt, detaching the upper I-shaped steel 10, the lower I-shaped steel 11, the first steel template 1 and the second steel template 2, and moving to the next operation point.
Claims (1)
1. A connecting channel self-anchoring type formwork support system is characterized in that a main body structure comprises a first steel formwork, a second steel formwork, a ground anchor bolt, a first double-spliced steel pipe, a steel wedge block, a bolt, a second double-spliced steel pipe, an upper I-shaped steel, a lower I-shaped steel, a steel pipe, a bolt cap and a bolt buckle; the upper I-steel and the two lower I-steels form a main keel of an arch structure, the longitudinal distance between the adjacent upper I-steels is 60cm, the upper I-steel is pre-bent according to the arc size of the structural arch wall, and steel plates are welded at the joints of the upper I-steel and the two lower I-steels and are fixedly connected through four bolts with the diameter of 20 mm; a first steel template with the length multiplied by the width of 120 multiplied by 20cm is installed on the arc inner side wall of the structural arch wall, a second steel template with the length multiplied by the width of 120 multiplied by 30cm is installed on the inner side wall of the vertical side, an earth anchor bolt adopts phi 22 steel bars with screw threads, the bending degree of 30-45 degrees is increased in the concrete structure and is symmetrically installed 15cm above a structural bottom plate, and the earth anchor bolt is fixedly connected with the lower I-shaped steel through a first double-spliced steel pipe, a bolt fastener and a bolt cap in sequence; welding a steel wedge block at the arc-shaped part of the top of the upper I-shaped steel; the fastener type support is composed of three rows of transverse and longitudinal steel pipes, the distance is 90cm, the step pitch is 85cm, the longitudinal distance is 60cm, a jacking support is adopted to jack the upper I-shaped steel and the lower I-shaped steel, and the fastener type support is fixedly connected with the upper I-shaped steel through a second double-spliced steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827770.8U CN211665792U (en) | 2019-10-29 | 2019-10-29 | Self-anchored formwork support system for connecting channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827770.8U CN211665792U (en) | 2019-10-29 | 2019-10-29 | Self-anchored formwork support system for connecting channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211665792U true CN211665792U (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921827770.8U Expired - Fee Related CN211665792U (en) | 2019-10-29 | 2019-10-29 | Self-anchored formwork support system for connecting channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211665792U (en) |
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2019
- 2019-10-29 CN CN201921827770.8U patent/CN211665792U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201013 Termination date: 20211029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |