CN114351754A - Combined shell pipe gallery bottom T-shaped joint and construction method thereof - Google Patents
Combined shell pipe gallery bottom T-shaped joint and construction method thereof Download PDFInfo
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- CN114351754A CN114351754A CN202111580835.5A CN202111580835A CN114351754A CN 114351754 A CN114351754 A CN 114351754A CN 202111580835 A CN202111580835 A CN 202111580835A CN 114351754 A CN114351754 A CN 114351754A
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims description 25
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 10
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a T-shaped node at the bottom of a combined shell pipe gallery and a construction method thereof, wherein a cast-in-place bottom plate is spliced in a combined shell prefabricated in a factory to form the T-shaped node at the bottom of the combined shell pipe gallery; and after splicing, pouring concrete on the construction site to complete the construction of the node structure. The wall plate steel bar framework in the combined shell, the opposite-pulling connecting piece and the high-strength template. The bottom plate and the prefabricated middle wall plate are connected by the cast-in-place concrete, the connecting position is seamless, and the waterproof effect is good; the mass of the combined shell component is only one fifth of the weight of the whole prefabricated component, and the transportation cost of the component is low; the concrete section and the steel bar connection mode of the cast-in-place member are not changed by the node, and the integrity is kept consistent with the cast-in-place property. Well wallboard passes through the connecting piece and links together high-strength template material and framework of steel reinforcement, and the standardized degree of component is high, has industrial production's design basis.
Description
Technical Field
The invention belongs to the technical field of construction engineering construction, and is mainly used for construction of a pipe gallery structure.
Background
The city of China now enters the golden period of underground space utilization and development, and the construction of urban underground pipe galleries is rapidly developed. At present, a large amount of cast-in-place modes are adopted in the structure construction stage, so that the problems of large wet operation amount of a construction site, large water resource consumption, obvious low industrialization level, low construction efficiency, high overall energy consumption of the industry and the like are caused, and a new construction method is urgently needed to replace the traditional cast-in-place method.
The section form of the pipe gallery is single, which creates conditions for standardized production. But as underground structure, its waterproof requirement is higher, and this also brings certain challenge for the application of assembled piping lane.
The most central part of the assembly construction technology is the node connection between the components. The existing assembled pipe gallery node connection technology has three main problems in general: 1, the assembled member has more joints and poor waterproof effect; 2, the construction cost is higher than that of cast-in-place, and the main reasons are heavy components and high transportation cost. 3, the nodal connection of assembled piping lane adopts modes such as prestressing force, bolt, sleeve more, compares cast-in-place wholeness poor.
Disclosure of Invention
The invention aims to design a T-shaped node at the bottom of a combined shell pipe gallery to solve the problems of more joints, poor waterproof effect, heavy components, high transportation cost and poor overall performance of assembly type construction in the background art.
In order to achieve the purpose, the technical scheme adopted by the invention is that the T-shaped node at the bottom of the combined shell-tube gallery comprises a cast-in-place bottom plate 1 and a combined shell middle wall plate 2 prefabricated in a factory, and the T-shaped node at the bottom of the combined shell-tube gallery is formed by splicing at a construction site; and after splicing, pouring concrete on the construction site to complete the construction of the node structure. The wall plate 2 in the combined shell consists of a steel reinforcement framework, a counter-pull connecting piece and a high-strength template.
Furthermore, the high-strength template of the wall plate in the combined shell is arranged on the outer side of the steel reinforcement framework, occupies the position of the cast-in-place structure protective layer, and serves as a template in the concrete pouring process to bear the lateral pressure in the concrete pouring process. After the concrete pouring is finished, the high-strength template is used as a reinforcing steel bar protection layer to participate in stress.
Further, the concrete outline size of the wall plate in the combined shell is consistent with that of a common cast-in-place member.
Further, among the adjacent combination shell piping lane well wallboard, well wallboard distribution reinforcing bar 9a adopts overlap joint with adjacent well wallboard distribution reinforcing bar 9 b. Well wallboard distribution reinforcing bar 9a considers the position of adjacent well wallboard distribution reinforcing bar 9b in the component manufacturing process, and well wallboard distribution reinforcing bar 9a makes dodges. The middle wallboard combination shell high-strength templates of the adjacent components are spliced to form a middle wallboard vertical joint 4.
Furthermore, in the manufacturing process of the cast-in-place bottom plate, the embedded connecting ribs 7 are arranged through the positioning steel plates, and in the manufacturing process of the combined shell middle wall plate 2, the stressed reinforcing steel bars 10 of the middle wall plate are arranged in a staggered and close-fitting mode according to the embedded connecting ribs 7.
The T-shaped node specific implementation mode at the bottom of the combined shell pipe rack is as follows: s1, casting a bottom plate on the construction site, wherein the cast-in-place bottom plate 1 is composed of cast-in-place bottom plate stressed steel bars 5, cast-in-place bottom plate distribution steel bars 6, embedded connecting bars 7 and cast-in-place concrete 8. The embedded connecting bars 7 are accurately positioned through the embedded steel bar positioning steel plates 13 and the positioning steel plate preformed holes 14.
S2 the combined shell and tube gallery middle wall plate is produced in the factory, the combined shell middle wall plate 2 is composed of middle wall plate distribution reinforcing steel bars 9a, adjacent middle wall plate distribution reinforcing steel bars 9b, middle wall plate stress reinforcing steel bars 10, a middle wall plate combined shell high-strength template 11 and a middle wall plate opposite-pulling connecting piece 12. The position is controlled by the middle wall plate opposite pulling connecting piece. In the wallboard manufacturing process in the combination shell, the stressed steel bars 10 of the middle wallboard are avoided according to the embedded connecting bars 7.
S3 the embedded connecting bars 7 are accurately positioned through the embedded steel bar positioning steel plates 13 and the positioning steel plate preformed holes 14.
S4, installing the middle wallboard support system 3 and hoisting the middle wallboard of the combined shell and tube gallery.
And S5, connecting the stressed reinforcing steel bars 10 of the wallboard with the embedded connecting bars 7 in an overlapping manner.
S6, installing the middle wall boards of the adjacent combined shell and tube gallery, and splicing the adjacent middle wall boards to form a middle wall board vertical joint 4.
S7, concrete is poured in the middle wall plate 2 of the combined shell, and the middle wall plate embedded connecting ribs 7 are connected with the cast-in-place bottom plate 1; the connection of the adjacent middle wall boards is completed through the lap joint of the middle wall board distribution steel bars 9a and the adjacent middle wall board distribution steel bars 9 b. And finishing the construction of the T-shaped node structure at the bottom of the combined shell and tube gallery.
Compared with the prior art, the invention provides the T-shaped node at the bottom of the combined shell pipe gallery, the bottom plate and the prefabricated middle wall plate are connected by adopting cast-in-place concrete, the connecting position is seamless, and the waterproof effect is good; the mass of the combined shell component is only one fifth of the weight of the whole prefabricated component, and the transportation cost of the component is low; the concrete section and the steel bar connection mode of the cast-in-place member are not changed by the node, and the integrity is kept consistent with the cast-in-place property. Well wallboard passes through the connecting piece and links together high-strength template material and framework of steel reinforcement, and the standardized degree of component is high, has industrial production's design basis.
Drawings
Fig. 1 is a T-shaped node elevation view of the bottom of a combined shell and tube lane.
Figure 2 combines shell and tube gallery floors.
Fig. 3 composite shell tube lane center wall panel.
Fig. 4 shows a T-shaped node installation process 1 at the bottom of a combined shell and tube gallery.
FIG. 5 is a schematic view of the positioning plate.
Fig. 6 shows a combined shell and tube gallery bottom T-shaped node installation process 2.
FIG. 71-1 is a sectional view.
Fig. 8 is a plan view of a T-shaped node at the bottom of a combined shell and tube lane.
Fig. 9 shows a combined shell and tube gallery bottom T-shaped node installation process 3.
In the figure: 1. casting a bottom plate in situ; 2. a composite shell-in-shell wall panel; 3. a middle wallboard support system; 4. vertical seams of the middle wall plate; 5. cast-in-place bottom plate stressed steel bars; 6. distributing steel bars on the cast-in-situ bottom plate; 7. embedding connecting ribs; 8. casting concrete in situ; 9a, distributing steel bars on the middle wall plate; 9b, distributing steel bars on the adjacent middle wallboards; 10. the middle wallboard is stressed with steel bars; 11. a middle wallboard combined shell high-strength template; 12. the middle wallboard is a split connecting piece; 13. embedding a steel bar positioning steel plate; 14. and positioning the steel plate preformed hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Through comprehensive summary and intensive research on the prior art, the invention mainly solves the following problems:
(1) the T-shaped node at the bottom of the combined shell pipe gallery is characterized in that a bottom plate and a prefabricated middle wallboard are connected by cast-in-place concrete, the connecting position is seamless, and the waterproof effect is good;
(2) the mass of the combined shell component is only one fifth of the weight of the whole prefabricated component, and the transportation cost of the component is low;
(3) the concrete section and the steel bar connection mode of the cast-in-place member are not changed by the node, and the integrity is kept consistent with the cast-in-place property.
(4) Well wallboard passes through the connecting piece and links together high-strength template material and framework of steel reinforcement, and the standardized degree of component is high, has industrial production's design basis.
The main body part of the invention is formed by splicing a cast-in-place bottom plate 1 and a combined shell middle wall plate 2 prefabricated in a factory on a construction site to form a T-shaped node at the bottom of a combined shell pipe gallery. And after splicing, pouring concrete on the construction site to complete the construction of the node structure. The wall plate 2 in the combined shell consists of a steel reinforcement framework, a counter-pull connecting piece and a high-strength template.
1. Pipe gallery bottom T type node comprises cast-in-place bottom plate 1 and wallboard 2 in the prefabricated combination shell in mill, forms combination shell pipe gallery bottom T type node at the job site concatenation.
2. The high-strength template of the middle wallboard is arranged on the outer side of the steel reinforcement framework, occupies the position of the cast-in-place structure protective layer, and serves as a template in the concrete pouring process to bear the lateral pressure in the concrete pouring process. After the concrete pouring is finished, the high-strength template is used as a reinforcing steel bar protection layer to participate in stress. The concrete outline size of the middle wall plate is consistent with that of a common cast-in-place member.
3. In the wallboard in adjacent combination shell piping lane, well wallboard distribution reinforcing bar 9a adopts overlap joint (direct overlap joint) with adjacent well wallboard distribution reinforcing bar 9 b. Well wallboard distribution reinforcing bar 9a considers the position of adjacent well wallboard distribution reinforcing bar 9b in the component manufacturing process, and the reinforcing bar is made dodges. The middle wallboard combination shell high-strength templates of the adjacent components are spliced to form a middle wallboard vertical joint 4.
4. In the manufacturing process of the cast-in-place bottom plate, the embedded connecting ribs 7 are arranged through the positioning steel plates, and in the manufacturing process of the combined shell middle wall plate 2, the stressed reinforcing steel bars 10 of the middle wall plate are arranged in a staggered and close-fitting mode according to the embedded connecting ribs 7.
5. Construction process
(1) As shown in fig. 2: and (3) pouring a bottom plate on the construction site, wherein the cast-in-place bottom plate 1 consists of cast-in-place bottom plate stressed steel bars 5, cast-in-place bottom plate distribution steel bars 6, pre-embedded connecting bars 7 and cast-in-place concrete 8. The embedded connecting bars 7 are accurately positioned through the embedded steel bar positioning steel plates 13 and the positioning steel plate preformed holes 14.
(2) As shown in fig. 3: the combined shell and tube gallery middle wall plate is produced in a factory, and the combined shell middle wall plate 2 consists of middle wall plate distribution reinforcing steel bars 9a, adjacent middle wall plate distribution reinforcing steel bars 9b, middle wall plate stress reinforcing steel bars 10, a middle wall plate combined shell high-strength template 11 and a middle wall plate counter-pull connecting piece 12. The middle wallboard combination shell high-strength template 11 is 2cm thick. Because the protective layer of the stressed reinforcing steel bar of the middle wallboard is 3cm, the clear distance between the high-strength template of the combined shell of the middle wallboard and the stressed reinforcing steel bar of the middle wallboard is 1 cm. The position is controlled by the middle wall plate opposite pulling connecting piece. In the wallboard manufacturing process in the combination shell, the stressed steel bars 10 of the middle wallboard are avoided according to the embedded connecting bars 7.
(3) Fig. 4 and 5: the embedded connecting bars 7 are accurately positioned through the embedded steel bar positioning steel plates 13 and the positioning steel plate preformed holes 14.
(4) FIG. 6: and installing a middle wallboard supporting system 3 and hoisting the middle wallboard of the combined shell and tube gallery.
(5) Fig. 7 is a section 1-1 of fig. 6, wherein the stressed steel bars 10 of the middle wall board and the embedded connecting bars 7 are in lap joint.
(6) FIG. 8: and installing the middle wallboards of the adjacent combined shell and tube galleries, and splicing the adjacent middle wallboards to form a middle wallboard vertical joint 4.
(7) FIG. 9: concrete is poured into the middle wall plate 2 of the combined shell, and the middle wall plate embedded connecting ribs 7 are connected with the cast-in-place bottom plate 1; the connection of the adjacent middle wall boards is completed through the lap joint of the middle wall board distribution steel bars 9a and the adjacent middle wall board distribution steel bars 9 b. And finishing the construction of the node structure.
Claims (6)
1. Combination shell piping lane bottom T type node, its characterized in that: the combined shell and tube gallery bottom T-shaped node is formed by splicing a cast-in-place bottom plate and a combined shell middle wall plate prefabricated in a factory on a construction site; after splicing, pouring concrete on a construction site to complete construction of the node structure; the wall plate in the combined shell consists of a steel reinforcement framework, a counter-pull connecting piece and a high-strength template.
2. The combination shell piping lane bottom T type node of claim 1 characterized in that: the high-strength template of the wallboard in the combined shell is arranged on the outer side of the steel reinforcement framework, occupies the position of the protective layer of the cast-in-place structure, and is used as a template in the concrete pouring process to bear the lateral pressure in the concrete pouring process; after the concrete pouring is finished, the high-strength template is used as a reinforcing steel bar protection layer to participate in stress.
3. The combination shell piping lane bottom T type node of claim 1 characterized in that: the concrete external contour dimension of the wall plate in the combined shell is consistent with that of a common cast-in-place member.
4. The combination shell piping lane bottom T type node of claim 1 characterized in that: in the adjacent middle wallboards of the combined shell pipe gallery, the middle wallboard distribution steel bars and the adjacent middle wallboard distribution steel bars are connected in a lap joint manner; in the manufacturing process of the component, the positions of the distributed steel bars of the adjacent middle wallboards are considered, and the distributed steel bars of the middle wallboards are avoided; and the middle wallboard combination shell high-strength templates of the adjacent members are spliced to form a middle wallboard vertical joint.
5. The combination shell piping lane bottom T type node of claim 1 characterized in that: in the manufacturing process of the cast-in-place bottom plate, the embedded connecting ribs are arranged through the positioning steel plates, and in the manufacturing process of the wall plate in the combined shell, the stressed steel bars of the middle wall plate are arranged in a staggered and close-fitting mode according to the embedded connecting ribs.
6. The combination shell tube lane bottom T type node of any one of claims 1-5, characterized in that: the T-shaped node specific implementation mode at the bottom of the combined shell pipe rack is as follows: s1, casting a bottom plate on a construction site, wherein the cast-in-place bottom plate consists of cast-in-place bottom plate stressed steel bars, cast-in-place bottom plate distributed steel bars, pre-buried connecting bars and cast-in-place concrete; the embedded connecting bars are accurately positioned through the embedded steel bar positioning steel plate and the positioning steel plate preformed holes;
s2, producing a middle wallboard of the combined shell and tube gallery in a factory, wherein the middle wallboard of the combined shell consists of middle wallboard distribution reinforcing steel bars, adjacent middle wallboard distribution reinforcing steel bars, middle wallboard stress reinforcing steel bars, a middle wallboard combined shell high-strength template and a middle wallboard counter-pull connecting piece; controlling the position through the middle wall plate opposite-pulling connecting piece; in the manufacturing process of the middle wall board of the combined shell, the stressed steel bars of the middle wall board are avoided according to the pre-embedded connecting bars;
s3, accurately positioning the embedded connecting bars through the embedded steel bar positioning steel plates and the positioning steel plate preformed holes;
s4, installing a middle wallboard supporting system, and hoisting the middle wallboard of the combined shell and tube gallery;
s5, connecting the stressed reinforcing steel bars of the wallboard with the embedded connecting bars in an overlapping manner;
s6, mounting adjacent middle wallboards of the combined shell and tube gallery, and splicing the adjacent middle wallboards to form a vertical seam of the middle wallboards;
s7, concrete is poured in the middle wall plate of the combined shell, and the middle wall plate is connected with the cast-in-place bottom plate through the embedded connecting ribs of the middle wall plate; the connection of the adjacent middle wallboards is completed through the lap joint of the middle wallboard distribution steel bars and the adjacent middle wallboard distribution steel bars; and finishing the construction of the T-shaped node structure at the bottom of the combined shell and tube gallery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580835.5A CN114351754A (en) | 2021-12-22 | 2021-12-22 | Combined shell pipe gallery bottom T-shaped joint and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580835.5A CN114351754A (en) | 2021-12-22 | 2021-12-22 | Combined shell pipe gallery bottom T-shaped joint and construction method thereof |
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| CN114351754A true CN114351754A (en) | 2022-04-15 |
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