CN111719545A - Underground diaphragm wall guide wall prefabricated concrete supporting structure and supporting method - Google Patents
Underground diaphragm wall guide wall prefabricated concrete supporting structure and supporting method Download PDFInfo
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- CN111719545A CN111719545A CN202010624462.6A CN202010624462A CN111719545A CN 111719545 A CN111719545 A CN 111719545A CN 202010624462 A CN202010624462 A CN 202010624462A CN 111719545 A CN111719545 A CN 111719545A
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- precast concrete
- guide wall
- wall
- concrete supporting
- concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
Abstract
The invention provides a diaphragm wall guide wall precast concrete supporting structure and a supporting method, wherein the diaphragm wall guide wall precast concrete supporting structure comprises a groove and two guide walls positioned at two opposite sides of the groove, and the diaphragm wall guide wall precast concrete supporting comprises the following steps: the prefabricated concrete supporting beam is arranged between the two guide walls, the first end of the prefabricated concrete supporting beam is a slope surface arranged towards one guide wall, the second end of the prefabricated concrete supporting beam is a plane attached to the adjacent guide wall, and a hanging ring is embedded in the prefabricated concrete supporting beam; the wedge-shaped block is wedged in a gap between the first end slope surface of the precast concrete support beam and the guide wall; the cross beam is arranged above the precast concrete support beam, and two ends of the cross beam are respectively arranged on the two guide walls; and the two ends of the lifting rib are respectively connected with the cross beam and the lifting ring. The precast concrete supporting structure of the underground diaphragm wall guide wall can be precast, is convenient and quick to install and simple in manufacturing process, and can be disassembled for repeated use.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a precast concrete supporting structure and a supporting method for a diaphragm wall guide wall.
Background
With the innovation of underground space development technology, the application range of underground continuous walls is larger and larger, the construction requirements of guide walls are higher and higher, and how to efficiently and conveniently carry out the construction of guide wall support on the premise of considering both construction safety and construction quality is a main direction for the research of engineering technicians in recent years.
At present, square timbers or cast-in-place concrete are commonly used for supporting after the guide wall is poured, the strength of the timbers is low, the torsional capability is poor, and bulging and deformation of the guide wall after being poured are easily caused; the concrete support can not be reused due to cast-in-place, and the construction process is complicated, so that the promotion of the field construction progress is not facilitated.
Disclosure of Invention
In view of the above situation, the invention provides a precast concrete supporting structure and a precast concrete supporting method for a diaphragm wall guide wall, which solve the technical problems that cast-in-place concrete support cannot be reused, the construction process is complicated, and the promotion of the field construction progress is not facilitated.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a ground is wall leads prefabricated concrete bearing structure of wall, includes the slot and is located two of the relative both sides of slot lead the wall, ground is wall leads wall prefabricated concrete and supports and includes:
the prefabricated concrete supporting beam is arranged between the two guide walls, the first end of the prefabricated concrete supporting beam is a slope surface arranged towards one guide wall, the second end of the prefabricated concrete supporting beam is a plane attached to the adjacent guide wall, and a hanging ring is embedded in the prefabricated concrete supporting beam;
the wedge-shaped block is wedged in a gap between the first end slope surface of the precast concrete support beam and the guide wall;
the cross beam is arranged above the precast concrete support beam, and two ends of the cross beam are respectively arranged on the two guide walls;
and the two ends of the lifting rib are respectively connected with the cross beam and the lifting ring.
In the embodiment of the invention, a plurality of precast concrete supports are arranged at intervals along the length direction of the guide wall.
In the embodiment of the invention, the adjacent precast concrete support beams are arranged in a staggered manner.
In the embodiment of the invention, a plurality of lifting rings are arranged on one precast concrete supporting beam, and the lifting rings correspond to the lifting ribs one by one.
In the embodiment of the invention, the hanging rib comprises a main rod and hook parts arranged at two ends of the main rod, and the directions of the hook parts at the two ends of the main rod are the same.
In the embodiment of the invention, the hook parts of two adjacent hanging ribs face opposite directions.
In the embodiment of the invention, the main rod is an inclined rod, the hook part connected with the cross beam is a straight hook, and the hook part connected with the hanging ring is an acute angle hook.
In the embodiment of the invention, the wedge-shaped block is a right-angle triangular prism.
The invention also provides a supporting method of the underground diaphragm wall guide wall, the underground diaphragm wall guide wall comprises two guide walls of which the grooves are positioned at two opposite sides of the grooves, and the supporting method comprises the following steps:
providing a precast concrete support beam, wherein two opposite ends of the precast concrete support beam are respectively a slope surface and a plane surface, and a hanging ring is pre-embedded in the precast concrete support beam;
providing a lifting rib, connecting a first end part of the lifting rib with a lifting ring on the precast concrete supporting beam, and putting the precast concrete supporting beam between two guide walls;
providing a cross beam, placing the cross beam above the two guide walls, and connecting the second end part of the hanging rib with the cross beam;
adjusting the position of the precast concrete support beam to enable one end of the plane of the precast concrete support beam to be attached to the adjacent guide wall;
and providing a wedge-shaped block, and wedging the wedge-shaped block in a gap between one end of the slope surface of the precast concrete support beam and the guide wall.
In the embodiment of the invention, the manufacturing method of the precast concrete supporting beam comprises the following steps:
providing a concrete supporting tire membrane matched with the shape of the prefabricated concrete supporting beam;
pouring concrete into the concrete supporting tire mould, and pre-embedding the hanging ring on the concrete when the concrete is poured to the half height of the concrete supporting tire mould;
continuously pouring concrete until the concrete is flush with the top surface of the concrete support tire membrane;
and when the strength of the concrete meets the requirement, the formwork can be detached.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) compared with a cast-in-place concrete supporting structure, the concrete supporting beam in the precast concrete supporting structure of the guide wall of the diaphragm wall can be precast, the installation is convenient and rapid, the manufacturing process is simple, and the precast concrete supporting structure can be manufactured only by using partial wood templates and reinforcing steel bars.
(2) Compared with the traditional method, the prefabricated concrete supporting structure for the underground diaphragm wall guide wall has stronger applicability, can be recycled, reduces the waste of materials, and can be manufactured for a long time.
Drawings
Fig. 1 is a schematic perspective view of a precast concrete supporting structure of a diaphragm wall guide wall according to the present invention.
FIG. 2 is a schematic view of the connection structure of the precast concrete support beam and the wedge-shaped block according to the present invention.
FIG. 3 is a schematic structural view of a concrete supported tire membrane of the present invention.
Fig. 4 is a schematic side perspective view of the precast concrete supporting structure of the underground diaphragm wall guide wall according to the present invention.
The correspondence of reference numerals to components is as follows:
a guide wall 1; prefabricating a concrete support beam 2; a hanging ring 21; a concrete supporting tire membrane 22; a wedge block 3; a cross beam 4; hanging ribs 5; a main rod 51; a straight hook 52; an acute angle hook 53.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 1 and 2, the present invention provides a precast concrete supporting structure for a guide wall of a diaphragm wall, which includes a trench and two guide walls 1 located at two opposite sides of the trench, the precast concrete supporting structure for the guide wall of the diaphragm wall includes: the prefabricated concrete supporting beam 2, the wedge-shaped block 3, the cross beam 4 and the hanging rib 5 are supported between the two guide walls 1 by adopting the prefabricated concrete supporting beam 2, the prefabricated concrete supporting beam 2 and the guide walls 1 are fastened by adopting the wedge-shaped block 3, and the hanging ring 21 on the prefabricated concrete supporting beam 2 is tied by the cross beam 4 and the hanging rib 5, so that the supporting stability of the prefabricated concrete supporting beam 2 is further improved. Compared with a cast-in-place concrete beam, the precast concrete supporting beam 2, the wedge-shaped block 3, the cross beam 4 and the hanging ribs 5 in the precast concrete supporting structure of the underground diaphragm wall guide wall have the advantages of being reusable, convenient to disassemble, convenient to construct and the like, and the supporting stability of the underground diaphragm wall guide wall can be guaranteed.
Specifically, the precast concrete support beam 2 is arranged between two guide walls 1, as shown in fig. 2, a first end of the precast concrete support beam 2 is a slope surface arranged towards one guide wall 1, a second end of the precast concrete support beam 2 is a plane attached to the adjacent guide wall 1, and a hanging ring 21 is embedded in the precast concrete support beam 2; in the embodiment of the invention, in order to improve the stability of the guide wall support, a plurality of precast concrete support beams 2 are arranged at intervals along the length direction of the guide wall 1, and the heights of the precast concrete support beams 2 on the guide wall 1 can be multiple groups, as shown in fig. 4, the invention is provided with the heights of two groups of precast concrete support beams 2, the number and the setting height of the precast concrete support beams 2 can be adjusted according to requirements, and the adjacent precast concrete support beams 2 are arranged in a staggered way; a plurality of hanging rings 21 are arranged on one precast concrete supporting beam 2, and the hanging rings 21 correspond to the hanging ribs 5 one by one. The concrete manufacturing method of the precast concrete support beam 2 comprises the following steps:
as shown in fig. 3, a concrete supporting tire membrane 22 adapted to the shape of the prefabricated concrete supporting tire membrane is provided for manufacturing the prefabricated concrete supporting beam 2 with a fixed shape, the concrete supporting tire membrane 22 is an open box structure composed of five templates, and the adjacent templates are fixedly connected through steel nails (not shown);
providing lifting rings 21, embedding the lifting rings 21 in the concrete supporting tire membranes 22, wherein the number of the lifting rings 21 in each prefabricated concrete supporting beam 2 can be arranged according to the requirement and is not limited to 2; the hanging ring 21 is bent into a horseshoe shape by smooth or ribbed steel bars;
and (3) performing concrete pouring in the concrete supporting tire membrane 22, further, before the concrete pouring, coating a release agent in the concrete supporting tire membrane 22, when the concrete pouring height reaches half of the height of the concrete supporting tire membrane 22, putting the hanging ring 21, continuously pouring concrete to the top surface of the concrete supporting tire membrane 22, scraping the concrete on the top surface of the concrete supporting tire membrane 22, detaching the formwork when the concrete strength meets the requirement, detaching the formwork when the concrete strength reaches 75 percent, and reusing the concrete supporting tire membrane 22.
The wedge-shaped block 3 is closely inserted in a gap between the first end of the prefabricated concrete support beam 2 and the guide wall 1, in the embodiment of the invention, the wedge-shaped block 3 is a right-angle triangular prism, the inclination angle of the inclined plane of the wedge-shaped block 3 is the same as the slope angle of the prefabricated concrete support beam 2, the inclination angle of the inclined plane of the wedge-shaped block 3 is not unique to the slope angle of the prefabricated concrete support beam 2 and can be set according to the field construction condition, the wedge-shaped block 3 is downwards inserted in the gap between the first end of the prefabricated concrete support beam 2 and the guide wall 1 by one angle part, and the plane opposite to the inclined plane in the wedge-shaped block 3 is a plane attached to the guide; the wedge-shaped block 3 is a wood wedge, and one surface of the wedge-shaped block 3, which is attached to the guide wall 1, is parallel to the inner side surface of the guide wall 1; preferably, the length of the inclined plane of the wedge-shaped block 3 is not less than the length of the slope surface of the precast concrete support beam 2, and the width of the inclined plane of the wedge-shaped block 3 is not less than the width of the slope surface of the precast concrete support beam 2, so as to ensure the stability of the wedge-shaped block 3 after being inserted into the gap between the precast concrete support beam 2 and the guide wall 1.
The beam 4 is arranged above the precast concrete supporting beam 2, and two ends of the beam 4 are respectively arranged on the two guide walls 1; in the embodiment of the invention, the cross beam 4 is made of square wood.
Two ends of the hanging bar 5 are respectively connected with the cross beam 4 and the hanging ring 21; in the embodiment of the present invention, the hanging bar 5 includes a main rod 51 and hook portions disposed at two ends of the main rod 51, and the hook portions at two ends of the main rod 51 have the same orientation; furthermore, the main rod 51 is an inclined rod, the hook part at the end of the main rod 51 connected with the cross beam 4 is a straight hook 52, the hook part at the end of the main rod 51 connected with the hanging ring 21 is an acute angle hook 53, the acute angle hook 53 can prevent the hook part of the main rod 51 from being unhooked from the hanging ring 21, and the straight hook 52 can have a larger contact area with the cross beam 4, so that the hanging stability is improved. In the embodiment of the invention, the hook parts of two adjacent hanging ribs 5 are opposite in orientation, so that the condition that the hook parts of the hanging ribs 5 are completely hooked on one side of the cross beam 4 to cause unbalanced stress on the cross beam 4 is avoided.
The concrete supporting structure of the diaphragm wall guide wall of the invention is explained above, and the following method for supporting the diaphragm wall guide wall comprises the following steps:
providing the precast concrete supporting beam 2, the wedge-shaped block 3, the cross beam 4 and the hanging rib 5;
connecting the first end part of the lifting rib 5 with a lifting ring 21 on the precast concrete supporting beam 2, and lowering the precast concrete supporting beam 2 to a position between the two guide walls 1; specifically, an acute angle hook 53 at the lower part of a hanging rib 3 is hooked on a pre-embedded horseshoe-shaped steel bar exposed circular ring (the hook parts of two adjacent hanging ribs face oppositely), and a straight hook 52 at the upper part of the hanging rib 5 is manually grasped and slowly lowered to a fixed height;
placing a cross beam 4 above the two guide walls 1, and connecting the second end part of the hanging rib 5 with the cross beam 4, namely connecting a straight hook of the hanging rib 5 with the cross beam 4;
adjusting the position of the precast concrete supporting beam 2 to enable the second end of the precast concrete supporting beam 2 to be attached to the adjacent guide wall 1, wedging the wedge block 3 into a gap between the slope surface of the first end of the precast concrete supporting beam 2 and the guide wall 1, specifically, inserting the wedge block 3 into the first end of the precast concrete supporting beam 2, and striking the upper end of the wedge block 3 by using a small hammer until the wedge block 3, the precast concrete supporting beam 2 and the guide wall 1 are tightly attached.
Further, according to the requirements of the specifications and the drawing set, the operations are repeated, so that the adjacent precast concrete supporting beams 2 are staggered until all the guide wall concrete supporting structures in one construction section are installed.
While the present invention has been described in detail and with reference to the accompanying drawings and examples, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a ground is wall leads prefabricated concrete bearing structure, includes the slot and is located two of the relative both sides of slot lead the wall, its characterized in that, ground is wall leads wall prefabricated concrete and supports and includes:
the prefabricated concrete supporting beam is arranged between the two guide walls, the first end of the prefabricated concrete supporting beam is a slope surface arranged towards one guide wall, the second end of the prefabricated concrete supporting beam is a plane attached to the adjacent guide wall, and a hanging ring is embedded in the prefabricated concrete supporting beam;
the wedge-shaped block is wedged in a gap between the first end slope surface of the precast concrete support beam and the guide wall;
the cross beam is arranged above the precast concrete support beam, and two ends of the cross beam are respectively arranged on the two guide walls;
and the two ends of the lifting rib are respectively connected with the cross beam and the lifting ring.
2. The precast concrete supporting structure of the underground diaphragm wall guide wall according to claim 1, wherein the precast concrete supporting beams are arranged in plurality at intervals along the length direction of the guide wall.
3. The precast concrete supporting structure of the underground diaphragm wall guide wall according to claim 2, wherein the adjacent precast concrete supporting beams are arranged in a staggered manner.
4. The precast concrete supporting structure of the underground diaphragm wall guide wall according to claim 1, wherein a plurality of lifting rings are arranged on one precast concrete supporting beam, and the lifting rings correspond to the lifting ribs one to one.
5. The precast concrete supporting structure of the underground diaphragm wall guide wall according to claim 4, wherein the hanging rib comprises a main rod and hook parts arranged at two ends of the main rod, and the hook parts at two ends of the main rod are in the same direction.
6. The precast concrete supporting structure of the underground diaphragm wall guide wall as recited in claim 5, wherein the hook portions of the two adjacent suspension bars are oppositely oriented.
7. The precast concrete supporting structure of the underground diaphragm wall guide wall as recited in claim 5, wherein the main rod is an inclined rod, the hook part connected with the cross beam is a straight hook, and the hook part connected with the hanging ring is an acute angle hook.
8. The precast concrete supporting structure of the underground diaphragm wall guide wall as recited in claim 5, wherein the wedge-shaped block is a right triangular prism.
9. A method for supporting a diaphragm wall guide wall, wherein the diaphragm wall guide wall comprises two guide walls with grooves at two opposite sides of the groove, and the method comprises the following steps:
providing a precast concrete support beam, wherein two opposite ends of the precast concrete support beam are respectively a slope surface and a plane surface, and a hanging ring is pre-embedded in the precast concrete support beam;
providing a lifting rib, connecting a first end part of the lifting rib with a lifting ring on the precast concrete supporting beam, and putting the precast concrete supporting beam between two guide walls;
providing a cross beam, placing the cross beam above the two guide walls, and connecting the second end part of the hanging rib with the cross beam;
adjusting the position of the precast concrete support beam to enable one end of the plane of the precast concrete support beam to be attached to the adjacent guide wall;
and providing a wedge-shaped block, and wedging the wedge-shaped block in a gap between one end of the slope surface of the precast concrete support beam and the guide wall.
10. The method for supporting a diaphragm wall guide wall according to claim 9, wherein the method for manufacturing the precast concrete support beam comprises the following steps:
providing a concrete supporting tire membrane matched with the shape of the prefabricated concrete supporting beam;
pouring concrete into the concrete supporting tire mould, and pre-embedding the hanging ring on the concrete when the concrete is poured to the half height of the concrete supporting tire mould;
continuously pouring concrete until the concrete is flush with the top surface of the concrete support tire membrane;
and when the strength of the concrete meets the requirement, the formwork can be detached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624462.6A CN111719545A (en) | 2020-07-01 | 2020-07-01 | Underground diaphragm wall guide wall prefabricated concrete supporting structure and supporting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624462.6A CN111719545A (en) | 2020-07-01 | 2020-07-01 | Underground diaphragm wall guide wall prefabricated concrete supporting structure and supporting method |
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| CN111719545A true CN111719545A (en) | 2020-09-29 |
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| CN202010624462.6A Pending CN111719545A (en) | 2020-07-01 | 2020-07-01 | Underground diaphragm wall guide wall prefabricated concrete supporting structure and supporting method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201512781U (en) * | 2009-09-27 | 2010-06-23 | 江西省地质工程(集团)公司 | Support plug-in part of T-shaped section steel of guide wall of underground continuous wall |
| US20150211205A1 (en) * | 2014-01-29 | 2015-07-30 | Guangzhou Jishi Construction Group Co., Ltd. | Construction system for subway station |
| CN204662450U (en) * | 2015-05-12 | 2015-09-23 | 中建城市建设发展有限公司 | Under a kind of brace summer, suspension type prevents that spilling chemise builds device |
| CN205907674U (en) * | 2016-06-17 | 2017-01-25 | 中铁十八局集团第五工程有限公司 | Wall template reinforcement bearing structure is led on circulated servicetype ground even wall |
| CN210395316U (en) * | 2019-08-01 | 2020-04-24 | 中化明达(福建)地质勘测有限公司 | A bearing structure behind wall that leads for underground continuous wall construction |
-
2020
- 2020-07-01 CN CN202010624462.6A patent/CN111719545A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201512781U (en) * | 2009-09-27 | 2010-06-23 | 江西省地质工程(集团)公司 | Support plug-in part of T-shaped section steel of guide wall of underground continuous wall |
| US20150211205A1 (en) * | 2014-01-29 | 2015-07-30 | Guangzhou Jishi Construction Group Co., Ltd. | Construction system for subway station |
| CN204662450U (en) * | 2015-05-12 | 2015-09-23 | 中建城市建设发展有限公司 | Under a kind of brace summer, suspension type prevents that spilling chemise builds device |
| CN205907674U (en) * | 2016-06-17 | 2017-01-25 | 中铁十八局集团第五工程有限公司 | Wall template reinforcement bearing structure is led on circulated servicetype ground even wall |
| CN210395316U (en) * | 2019-08-01 | 2020-04-24 | 中化明达(福建)地质勘测有限公司 | A bearing structure behind wall that leads for underground continuous wall construction |
Non-Patent Citations (1)
| Title |
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| 刘家豪: "《水运工程施工技术》", 31 March 2004, 人民交通出版社 * |
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Application publication date: 20200929 |