CN110409492A - A multi-structure combined assembled pipe gallery with superimposed components and its construction method - Google Patents

Abstract

The invention belongs to the field of underground comprehensive pipe gallery engineering, in particular to a multi-structure assembled pipe gallery with superimposed components and a construction method thereof. The prefabricated pipe gallery includes a solid prefabricated interior wall set on the cast-in-place floor. The solid prefabricated interior wall is arranged on both sides of the middle part of the cast-in-place floor. A prefabricated steel bar truss superimposed roof is installed between the tops of the inner walls, and the upper side of the prefabricated steel bar truss superimposed roof is a cast-in-place structural roof; The cast-in-place structural roof is set between the solid prefabricated inner wall; the semi-fabricated pipe gallery includes a cast-in-place outer wall set on the other side of the cast-in-place base plate, and double-sided prefabricated sandwich outer wall panels are set on the inner and outer sides of the cast-in-place outer wall. Diagonal braces are installed on the inner double-sided prefabricated sandwich outer wall panels, and prefabricated steel truss laminated roofs are installed between the double-sided prefabricated sandwich outer wall panels and the solid prefabricated inner walls.

Description

A multi-structure combined assembled pipe gallery with superimposed components and its construction method

technical field

The invention belongs to the field of underground comprehensive pipe gallery engineering, in particular to a multi-structure assembled pipe gallery with superimposed components and a construction method thereof.

Background technique

In recent years, my country's urbanization process has been accelerating, the city's comprehensive strength has been continuously enhanced, foreign exchanges have increased, urban underground spaces have been continuously developed, and the importance of comprehensive utility corridors has become more and more recognized. How to improve production efficiency, reduce potential safety hazards, reduce labor costs, save energy and protect the environment, and reduce pollution has become the main research focus at this stage.

At present, in the construction of comprehensive pipe corridors in my country, except for the shield tunneling method and pipe jacking method for special needs, most of the projects are constructed by the open-cut method, and the open-cut method is divided into traditional cast-in-place concrete and prefabricated methods construction. The main disadvantages of cast-in-place concrete construction are long construction period, large labor demand, high environmental protection pressure on the construction site, and high safety risks, etc., which cannot meet the green construction requirements of "four sections and one environmental protection". The main components of the prefabricated comprehensive pipe gallery are prefabricated in the factory, and the main structure is assembled and formed on site. The entire construction process can significantly reduce on-site operations, reduce labor, reduce pollution, and reduce costs, thereby achieving the goal of green construction. However, due to the complex and changeable load of the underground pipe gallery and the waterproof requirements, the prefabricated assembly construction of the underground comprehensive pipe gallery is more diverse in types, more advanced in technology, and stricter in requirements than construction projects. At present, the domestic prefabricated pipe gallery technology is not very mature, and the construction quality of the prefabricated pipe gallery has yet to be studied. Therefore, it is necessary to study a method that can effectively solve the problems of short construction period and high requirements on structure and waterproof performance of the current urban underground comprehensive pipe gallery. Construction method.

Contents of the invention

In order to solve the problem of how to quickly complete the construction of the urban underground comprehensive pipe gallery with complex structural forms and high waterproof performance requirements, the present invention provides a multi-structure assembled pipe gallery with superimposed components and a construction method thereof.

The present invention adopts the following technical solutions: a multi-structure combined assembled pipe gallery with superimposed components, including a cast-in-place pipe gallery, a prefabricated pipe gallery and a semi-fabricated pipe gallery. Solid prefabricated interior walls, the solid prefabricated interior walls are set on both sides of the middle part of the cast-in-place floor, the sides of the solid prefabricated interior walls are provided with diagonal braces, and the tops of the solid prefabricated interior walls on both sides are stacked with prefabricated steel trusses Roof, the upper side of the prefabricated steel truss superimposed roof is the cast-in-place structure roof; the cast-in-place pipe gallery includes the cast-in-place outer wall set on one side of the cast-in-place bottom plate, and the cast-in-place structure is set between the cast-in-place outer wall and the solid prefabricated inner wall Roof; the semi-fabricated pipe gallery includes a cast-in-place exterior wall set on the other side of the cast-in-place bottom plate, double-sided prefabricated sandwich exterior wall panels are installed on the inner and outer sides of the cast-in-place exterior wall, and the inner double-sided prefabricated sandwich exterior wall panels are installed There are diagonal braces, and a prefabricated steel truss superimposed roof is installed between the double-sided prefabricated sandwich exterior wall panels and the solid prefabricated interior walls, and the upper side of the prefabricated steel truss superimposed top is a cast-in-place structural roof.

Further, the prefabricated steel truss superimposed floor is pre-embedded in the cast-in-place bottom plate on one side of the prefabricated pipe gallery and the semi-fabricated pipe gallery, and the prefabricated steel truss superimposed floor is provided with a diagonal brace, and one end of the diagonal brace and the diagonal brace Hinged, the other end of the brace is connected to the solid precast interior wall.

Further, the solid prefabricated inner wall is installed on the bracket, and the bracket is pre-buried in the cast-in-place base plate.

Further, double-sided prefabricated sandwich exterior wall panels are installed on the outside of the cast-in-place exterior wall.

Further, the top of the double-sided prefabricated sandwich exterior wall panel is provided with hanging points, the lower part of the double-sided prefabricated sandwich exterior wall panel is provided with observation holes, and the two sides of the bottom of the double-sided prefabricated sandwich exterior wall panel are provided with water-proof steel plates.

Further, a cable bin, a water storage bin and a heat bin are arranged in the cast-in-place bottom plate.

Further, the diagonal bracing bracket includes a steel bar leg, the bottom of the steel bar leg is pre-embedded in the laminated bottom plate of the prefabricated steel bar truss, and the top of the steel bar leg is welded with a hook.

A construction method for a multi-structure assembled pipe gallery with superimposed components, comprising the following steps,

S100～Bottom plate hoisting: Lay 10mm thick fine sand on the cushion for leveling, hoist the prefabricated steel bar truss laminated bottom plate in place, and carry out steel bar binding on the cast-in-place bottom plate;

S200～Support processing: Use angle steel to weld square brackets according to the height of the bottom plate and the thickness of the prefabricated wall panels, and add an angle steel reinforcement in the middle;

S300～Wall panel hoisting: Install the double-sided prefabricated sandwich wall to the outer wall, and the solid prefabricated wall to the inner wall. steel plate;

S400～Cast-in-place external wall and concrete construction: Bind the steel bars, install water-stop steel plates and formwork support for the cast-in-place external wall according to the requirements of the drawings, and then pour concrete after completion.

S500～Roof support system: After the concrete is solidified, install the cast-in-place exterior wall formwork and erect scaffolding for the whole hall, and finally install the formwork at the laminated roof part without prefabricated laminated steel truss;

S600～Roof hoisting: hoisting the laminated roof of the prefabricated steel truss to the erected supporting system;

S700～Construction of cast-in-place roof: Bind the upper steel bars and the steel bars of the cast-in-place structure on the prefabricated steel truss superimposed roof, and finally pour concrete.

Compared with the prior art, the present invention has the following characteristics and beneficial effects:

(1) The present invention utilizes the characteristics of good performance of the cast-in-place structure, and is applied to the parts where the cabin body of the pipe gallery is large and requires high stress on the joints, so as to ensure the safety and durability of the structure;

(2) The wall of the present invention uses superimposed prefabricated components and fully prefabricated components, which saves the time for wall reinforcement binding and formwork support, and also ensures the quality of concrete pouring and maintenance;

(3) The application of double-sided prefabricated sandwich walls ensures the waterproof quality of the exterior walls. There are not only conventional waterproof steel plates to ensure the waterproof of construction joints, but also prefabricated and cast-in-place concrete to ensure waterproof quality;

(4) The prefabricated steel truss laminated roof is applied to the roof, which saves the installation time of the roof formwork and the binding time of the lower reinforcement of the roof, and speeds up the construction progress.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of a double-sided prefabricated sandwich exterior wall panel;

Fig. 3 is a schematic diagram of a prefabricated reinforced truss laminated floor;

Fig. 4 is a schematic diagram of a large sample diagram of an oblique support ring;

In the figure: 1-prefabricated reinforced truss laminated base plate, 2-cast-in-place base plate, 3-bracket, 4-double-sided prefabricated sandwich exterior wall panel, 5-solid prefabricated inner wall, 6-diagonal brace, 7-cast-in-place External wall, 8-prefabricated steel truss superimposed roof, 9-cast-in-place structure roof, 10-diagonal bracing bracket, 11-cable warehouse, 12-water storage warehouse, 13-thermal warehouse, 14-hanging point, 15-observation Hole, 16-waterproof steel plate, 17-reinforced leg, 18-hook.

Detailed ways

As shown in Figure 1, a multi-structure combined assembled pipe gallery with superimposed components includes a cast-in-place pipe gallery, a prefabricated pipe gallery and a semi-fabricated pipe gallery.

The prefabricated pipe gallery includes a solid prefabricated inner wall 5 arranged on the cast-in-place floor 2, the solid prefabricated inner wall 5 is arranged on both sides of the middle part of the cast-in-place floor 2, and the side of the solid prefabricated inner wall 5 is provided with diagonal braces 6, A prefabricated steel bar truss laminated roof 8 is installed between the tops of the solid prefabricated inner walls 5 on both sides, and the upper side of the prefabricated steel bar truss laminated roof 8 is a cast-in-place structural roof 9 .

The cast-in-place pipe gallery includes a cast-in-place outer wall 7 arranged on one side of the cast-in-place bottom plate 2 , and a cast-in-place structural roof 9 is arranged between the cast-in-place outer wall 7 and the solid prefabricated inner wall 5 .

The semi-fabricated pipe gallery includes a cast-in-place exterior wall 7 arranged on the other side of the cast-in-place base plate 2. The inner and outer sides of the cast-in-place exterior wall 7 are provided with double-sided prefabricated sandwich exterior wall panels 4, and the inner double-sided prefabricated sandwich exterior wall panels 4 is installed with diagonal braces 6, and a prefabricated steel truss laminated roof 8 is installed between the double-sided prefabricated sandwich exterior wall panel 4 and the solid prefabricated interior wall 5, and the upper side of the prefabricated steel truss laminated roof 8 is a cast-in-place structural roof 9.

The cast-in-place floor 2 on one side of the prefabricated pipe gallery and the semi-fabricated pipe gallery is pre-embedded with a prefabricated steel truss laminated floor 1, and the prefabricated steel truss laminated floor 1 is provided with a diagonal brace 10, and the diagonal brace 10 and the diagonal brace One end of 6 is hinged, and the other end of diagonal brace 6 is connected with solid prefabricated inner wall 5 .

The solid prefabricated inner wall 5 is installed on the support 3, and the support 3 is pre-buried in the cast-in-place base plate 2. A double-sided prefabricated sandwich exterior wall panel 4 is installed on the outside of the cast-in-place exterior wall 7 . As shown in Figure 2, the top of the double-sided prefabricated sandwich exterior wall panel 4 is provided with a lifting point 14, the lower part of the double-sided prefabricated sandwich exterior wall panel 4 is provided with an observation hole 15, and the bottom of the double-sided prefabricated sandwich exterior wall panel 4 is provided on both sides. Waterproof steel plate 16. The cast-in-place bottom plate 2 is provided with a cable bin 11 , a water storage bin 12 and a heat bin 13 .

As shown in Figures 3 and 4, the diagonal brace 10 includes steel bar legs 17, the bottom of the steel bar legs 17 is pre-embedded in the laminated bottom plate 1 of the prefabricated steel bar truss, and the top of the steel bar legs 17 is welded with a hook 18.

A construction method for a multi-structure assembled pipe gallery with superimposed components, comprising the following steps,

S100～Bottom plate hoisting: Lay 10mm thick fine sand on the cushion for leveling, hoist the prefabricated steel truss laminated bottom plate 1 into place, and bind the steel bars at the cast-in-place bottom plate 2.

S200～Support processing: Use 8# angle steel to weld square bracket 3 according to the height of the bottom plate and the thickness of the prefabricated wall board, and add an angle steel reinforcement in the middle.

S300～Wall panel hoisting: Install the double-sided prefabricated sandwich wall 4 to the outer wall, and the solid prefabricated wall 5 to the inner wall. After the installation is completed, use the diagonal brace 6 to fix it, and weld the double-sided prefabricated sandwich wall 4 panels Waterproof steel plate between.

S400～Cast-in-place external wall and concrete construction: according to the requirements of the drawings, the cast-in-place external wall 7 shall be bound with steel bars, installed with water-stop steel plates and formwork support.

S500～Roof support system: After the concrete is solidified, install the cast-in-place formwork for the exterior wall and erect scaffolding for the whole hall, and finally install the formwork on the laminated roof of the non-prefabricated laminated steel truss.

S600～Roof hoisting: hoist the prefabricated steel bar truss superimposed roof 8 to the erected supporting system.

S700～Construction of cast-in-place roof: Bind the upper steel bars and the steel bars of the cast-in-place structure on the prefabricated steel truss laminated roof 8, and finally pour concrete.

Claims (8)

1. A multi-structure assembled pipe gallery with superimposed components, characterized in that it includes a cast-in-place pipe gallery, a prefabricated pipe gallery and a semi-fabricated pipe gallery, The fabricated pipe gallery includes a solid prefabricated interior wall (5) arranged on the cast-in-place floor (2), the solid prefabricated interior wall (5) is arranged on both sides of the middle of the cast-in-place floor (2), and the solid prefabricated interior wall (5) Diagonal braces (6) are arranged on the side, and a prefabricated steel truss laminated roof (8) is installed between the tops of the solid prefabricated inner walls (5) on both sides, and the upper side of the prefabricated steel truss laminated roof (8) is Cast-in-place structural roof (9); The cast-in-place pipe gallery includes a cast-in-place outer wall (7) arranged on one side of the cast-in-place bottom plate (2), and a cast-in-place structural roof (9) is set between the cast-in-place outer wall (7) and the solid prefabricated inner wall (5) ; The semi-fabricated pipe gallery includes a cast-in-place exterior wall (7) set on the other side of the cast-in-place base plate (2). Diagonal bracing (6) is installed on the double-sided prefabricated sandwich exterior wall panel (4), and a prefabricated steel truss laminated roof is installed between the double-sided prefabricated sandwich exterior wall panel (4) and the solid prefabricated interior wall (5) (8), the upper side of the prefabricated reinforced truss laminated roof (8) is the cast-in-place structural roof (9). 2. The prefabricated pipe gallery with multiple structures combined with superimposed components according to claim 1, characterized in that: the cast-in-place floor (2) on one side of the prefabricated pipe gallery and the semi-fabricated pipe gallery is pre-embedded There is a prefabricated steel bar truss superimposed floor (1), and a diagonal bracing support (10) is arranged on the prefabricated steel bar truss superimposed floor (1), and the diagonal bracing support (10) is hinged with one end of the diagonal bracing (6), and the diagonal bracing (6) The other end of it is connected with the solid core prefabricated inner wall (5). 3. The multi-structure assembled pipe gallery with superimposed components according to claim 2, characterized in that: the solid prefabricated inner wall (5) is installed on the bracket (3), and the bracket (3) is pre-embedded In the cast-in-place base plate (2). 4. The multi-structure assembled pipe gallery with superimposed components according to claim 3, characterized in that: double-sided prefabricated sandwich exterior wall panels (4) are installed on the outside of the cast-in-place exterior wall (7). 5. The multi-structure assembled pipe gallery with superimposed components according to claim 4, characterized in that: the top of the double-sided prefabricated sandwich exterior wall panel (4) is provided with a hanging point (14), and the double-sided Observation holes (15) are arranged on the lower part of the prefabricated sandwich exterior wall panel (4), and water-stop steel plates (16) are arranged on both sides of the bottom of the double-sided prefabricated sandwich exterior wall panel (4). 6. The multi-structure assembled pipe gallery with superimposed components according to claim 5, characterized in that: the cast-in-place bottom plate (2) is provided with a cable warehouse (11) and a water storage warehouse (12) and thermal chamber (13). 7. The multi-structure assembled pipe gallery with superimposed components according to claim 6, characterized in that: the diagonal brace (10) includes a steel bar leg (17), and the bottom of the steel bar leg (17) is pre-buried in In the superimposed bottom plate (1) of the prefabricated steel bar truss, the top of the steel bar leg (17) is welded with a hook (18). 8. A construction method for a multi-structure assembled pipe gallery containing superimposed components as claimed in claim 7, characterized in that it comprises the following steps, S100～Bottom plate hoisting: Lay 10mm thick fine sand on the cushion for leveling, hoist the prefabricated steel bar truss laminated bottom plate (1) into place, and perform reinforcement binding on the cast-in-place bottom plate (2); S200～Support processing: Use angle steel to weld square brackets (3) according to the height of the bottom plate and the thickness of the prefabricated wall panels, and add an angle steel reinforcement in the middle; S300～Wall panel hoisting: install the double-sided prefabricated sandwich wall (4) to the outer wall, and the solid prefabricated wall (5) to the inner wall. Waterproof steel plate between prefabricated sandwich wall (4) plates; S400～Cast-in-place exterior wall and concrete construction: Bind steel bars, install water-stop steel plates, and formwork support for the cast-in-place exterior wall (7) according to the requirements of the drawings, and then pour concrete after completion. ; S500～Roof support system: After the concrete is solidified, install the cast-in-place exterior wall formwork and erect scaffolding for the whole hall, and finally install the formwork at the laminated roof part without prefabricated laminated steel truss; S600～Hoisting of the roof: hoisting the laminated roof (8) of the prefabricated steel truss to the erected supporting system; S700～Cast-in-place roof construction: Bind the upper steel bars and the steel bars in the cast-in-place structure on the prefabricated steel truss laminated roof (8), and finally pour concrete.