CN208105317U - Corrugated steel outer lining concrete structure for underground pipe gallery - Google Patents

Abstract

Corrugated steel outer-lined concrete structure used for underground comprehensive pipe gallery. The utility model relates to the structure of underground comprehensive pipe gallery. Water leakage and insufficient structural stability of the corrugated steel pipe gallery. The corrugated steel-lined concrete structure used for the underground comprehensive pipe gallery includes an outer-lined reinforced concrete ring, an arch corrugated steel plate and a bottom plate, wherein the outer-lined concrete ring is covered on the outer plate surface of the arch corrugated steel plate to form an arch body. Reinforcing bars are pre-embedded on the left and right sides of the bottom plate, and grouting sleeves are arranged in the arch feet of the arch body. The steel bars on the bottom plate are inserted into the grouting sleeves in the arch feet, and concrete is poured into the grouting sleeves. The construction speed of the corrugated steel outer-lined concrete structure of the utility model is faster, and the anti-seepage performance of the structure, the performance of resisting the uneven settlement of the foundation and the connection convenience of the prefabricated sections are all greatly improved.

Description

Corrugated steel-lined concrete structure for underground utility corridor

technical field

The utility model relates to an underground comprehensive pipe gallery structure.

Background technique

With the construction process of my country's modern cities and the increase in population and development intensity, the city's demand for municipal pipelines is getting higher and higher, and the number is increasing. The traditional method of laying municipal pipelines has been unable to meet the demand. Years of practical experience abroad have proved that the construction of urban underground comprehensive pipe corridors can solve problems such as repeated excavation of road surfaces, dense overhead line networks, and frequent pipeline accidents, which is conducive to ensuring urban safety, improving urban functions, beautifying urban landscapes, and promoting urban intensification Efficient and transformational development is conducive to improving the city's comprehensive carrying capacity and the quality of urbanization development, and is conducive to increasing effective investment in public products and stimulating social capital.

At present, the underground comprehensive pipe gallery is mainly composed of reinforced concrete structures, but when the cast-in-place concrete is used for construction, the construction speed is slow, which has a great impact on the traffic of the main road and brings great inconvenience to the lives of residents. In addition, the concrete structure is not resistant to foundations. The uniform settlement and impermeability are poor. When there is a large uneven settlement, cracking and water leakage will occur. When the concrete structure adopts prefabricated construction, although it can speed up the construction progress and ensure the construction quality, its connection joints have always been a problem. When rigid connections are used, they are prone to breakage when large uneven settlement occurs; when flexible connections are used , Generally, the phenomenon of water leakage at the joints is still significant, and the high-efficiency sealing flexible joints require high joint precision and very complicated processing.

Due to the existence of these problems, the application of corrugated steel pipe integrated pipe gallery in our country is gradually increasing. The corrugated steel pipe integrated pipe gallery can not only avoid wet work and speed up the construction progress, but also because of the corrugation of the pipe body, it cooperates with the surrounding soil to make the force more reasonable and the anti-uniform settlement performance of the foundation is also better. On the issue of anti-corrosion, foreign related studies have shown that corrugated steel plates have good anti-corrosion performance after special treatment. However, the corrugated steel pipe is relatively soft, and it is prone to instability when the span is too large, and the cross-sectional form is relatively fixed, generally circular or oval. Compared with the rectangular cross-section, the space utilization rate of the circular cross-section is poor. The steel pipe is still prone to leakage at the position of the bolt hole and the junction of the cross section.

Utility model content

The utility model aims to solve the problems that the current concrete structure has poor resistance to uneven subsidence and impermeability of the foundation, the joints of the prefabricated pipe gallery are easy to break and leak, and the stable bearing capacity of the corrugated steel pipe gallery structure is insufficient. Corrugated steel-lined concrete structure.

The corrugated steel outer-lined concrete structure used in the underground comprehensive pipe gallery of the utility model includes an outer-lined reinforced concrete ring, an arch body corrugated steel plate and a bottom plate, wherein the outer lined concrete ring is covered on the outer plate surface of the arch body corrugated steel plate to form an arch body , steel bars are pre-embedded on the left and right sides of the bottom plate, grouting sleeves are set in the arch feet of the arch body, the steel bars on the bottom plate are inserted into the grouting sleeves in the arch feet, and concrete is poured into the grouting sleeves , the surrounding soil is wrapped around the arch body and the bottom plate to form a corrugated steel-lined concrete structure for the underground comprehensive pipe gallery.

The utility model provides a corrugated steel outer-lined concrete structure for a comprehensive pipe gallery. Due to the existence of corrugated plates, the structure's foundation settlement resistance and impermeability are greatly improved; and during pouring construction, The corrugated steel plate acts as a formwork, which speeds up the construction progress; in addition, the segmental connection of this structural form can be connected flexibly, which is convenient for connection and has excellent leak-proof effect for the connecting section; stability. This type of structure can be widely used in the construction of underground comprehensive pipe gallery, especially in the environment where the pipe gallery is located below the groundwater level, the foundation condition is poor, the load level is high, or the service span is large.

The corrugated steel-lined concrete structure used in the utility model for the underground comprehensive pipe gallery can adopt a prefabricated assembly construction method. For the prefabricated construction, the bottom plate and the arch body can be integrally prefabricated, or the bottom plate can be cast in-situ and the arch body can be prefabricated.

Compared with the concrete comprehensive pipe gallery, the construction speed of the corrugated steel outer-lined concrete structure of the utility model is faster, and the anti-seepage performance of the structure, the performance of resisting the uneven settlement of the foundation, and the connection convenience of the prefabricated sections have all been greatly improved; and Compared with the corrugated steel integrated pipe gallery, its structural bearing capacity is higher, which greatly reduces the possibility of local buckling, and the cross-sectional form is more diverse, such as box-shaped cross-section, and the space utilization rate of its cross-section is higher.

The corrugated steel outer-lined concrete structure used in the underground comprehensive pipe gallery of the utility model includes the following beneficial effects:

1. Corrugated steel-lined concrete structure due to the existence of corrugated steel plate, the impermeability of the structure and the performance of anti-uniform settlement of the foundation are significantly improved, and the structure is not easy to crack and leak;

2. When the corrugated steel-lined concrete structure is poured in sections, the corrugated steel plate can be used as a formwork, which speeds up the construction progress and reduces the amount of formwork used;

3. The corrugated steel-lined concrete structure can adopt prefabricated construction, the construction speed is fast, the connection is convenient, and the impermeability and uneven settlement resistance of the joint structure are excellent;

4. Corrugated steel-lined concrete structure due to the existence of concrete, the bearing capacity and stability of the overall structure are much higher than the corrugated steel structure, which is suitable for large-space pipe gallery structures;

5. Due to the existence of concrete in the structure of corrugated steel lining concrete, when backfilling the soil in the later stage, there is no need for such strict requirements as corrugated steel backfilling, which reduces the limitations of construction;

6. The corrugated steel-lined concrete structure has a more free cross-sectional form, and various opening cross-sections such as box-shaped and semi-circular can be used, such as a large-span box-shaped cross-section, which can also bear the large bending moment generated inside.

The corrugated steel-lined concrete structure form of the comprehensive pipe gallery described in the utility model is applied to the construction of the comprehensive pipe gallery.

Description of drawings

Fig. 1 is the structural schematic diagram of the corrugated steel outer lining concrete structure that the utility model is used for underground comprehensive utility gallery;

Fig. 2 is a structural schematic diagram of the longitudinal connection of the corrugated steel-lined concrete structure used for the underground comprehensive utility gallery in the eighth embodiment.

Detailed ways

Specific Embodiment 1: The corrugated steel-lined concrete structure used in the underground comprehensive pipe gallery in this embodiment includes an outer-lined reinforced concrete ring 1, an arch body corrugated steel plate 2 and a bottom plate 4, wherein the outer-lined concrete ring 1 is wrapped on the arch body corrugated An arch body is formed on the outer surface of the steel plate 2, steel bars 4-2 are pre-embedded on the left and right sides of the bottom plate 4 respectively, and a grouting sleeve 5 is arranged in the arch foot of the arch body, and the steel bars 4-2 on the bottom plate 4 are inserted In the grouting sleeve 5 in the arch foot, concrete is poured in the grouting sleeve 5, and the surrounding soil 6 is wrapped around the arch body and the periphery of the bottom plate 4 to form a corrugated steel-lined concrete structure for the underground comprehensive pipe gallery.

In this embodiment, the corrugation direction of the corrugated steel plate is along the longitudinal span of the comprehensive pipe gallery, and the steel bars protruding from the bottom plate are perpendicular to the surface of the bottom plate.

The prefabricated segmental connection of the corrugated steel-lined concrete structure of the underground comprehensive utility gallery described in this embodiment includes prefabricated floor segments and segmental prefabricated arch rings. For base plate construction, the base plate can be a reinforced concrete base plate, or corrugated steel plates can be laid on the lower part of the base plate, and shear studs are welded on the corrugated steel plates to increase the bond between corrugated steel and concrete.

Embodiment 2: This embodiment differs from Embodiment 1 in that flanges 4-1 are provided on the left and right lateral sides of the bottom plate 4, and the arch body is located between the flanges 4-1 on the left and right sides.

The structural schematic diagram of the flange of this embodiment is shown in FIG. 1 .

Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the base plate 4 is a reinforced concrete base plate.

Embodiment 4: This embodiment differs from Embodiments 1 to 3 in that the concrete in the outer lined reinforced concrete ring 1 is impermeable concrete.

Embodiment 5: This embodiment is different from Embodiment 1 to Embodiment 4 in that a shear key 3 is welded on the upper surface of the corrugated steel plate 2 of the arch body.

In this embodiment, the corrugated steel plate of the arch body is subjected to anti-corrosion and fire-proof treatment as required.

Embodiment 6: This embodiment is different from Embodiment 1 to Embodiment 5 in that the upper and lower surfaces of the bottom plate 4 are respectively provided with flat steel plates or corrugated steel.

In this embodiment, flat steel plates or corrugated steel are used to ensure the impermeability and anti-settling properties of the bottom plate, and to resist uneven settlement.

Embodiment 7: This embodiment differs from Embodiments 1 to 6 in that the cross-section of the arch body is circular, pear-shaped, box-shaped, semi-circular or semi-elliptical.

Embodiment 8: In this embodiment, when the multi-segment corrugated steel-lined concrete structure used for the underground comprehensive pipe gallery is longitudinally connected, the prestressed steel bar 7 is longitudinally inserted in each section for the corrugated underground comprehensive pipe gallery In the outer lined reinforced concrete ring 1 in the steel outer lined concrete structure, a waterproof ring 8 is arranged between the connecting gaps of the arch bodies of two adjacent segments.

Embodiment 9: The difference between this embodiment and Embodiment 8 is that a first waterproof layer 9 is provided on the surface of the arch connection gap between two adjacent segments.

The material of the waterproof layer in this embodiment is polystyrene foam board, water-swellable rubber waterstop, polysulfide sealant, waterproof coiled material or polymer waterproof cement mortar.

Embodiment 10: This embodiment differs from Embodiment 8 in that the corrugated steel outer-lined concrete structure used for the underground comprehensive pipe gallery in two adjacent segments is provided with a lined corrugated steel plate 10 at the longitudinal connection, and the inner lined corrugated steel plate 10 is fixed on the inner plate surface of the corrugated steel plate 2 of the arch body through the second bolt 12, and the inner corrugated steel plate 10 is located between the two longitudinally connected sections.

Embodiment 11: This embodiment differs from Embodiment 10 in that a second waterproof layer 11 is interposed between the arch body corrugated steel plate 2 and the lining corrugated steel plate 10 .

Embodiment: The corrugated steel outer-lined concrete structure used in the underground comprehensive pipe gallery in this embodiment includes an outer-lined reinforced concrete ring 1, an arch body corrugated steel plate 2 and a bottom plate 4, wherein the outer-lined concrete ring 1 is covered on the arch body corrugated steel plate 2 An arch body is formed on the outer plate surface of the base plate 4, and steel bars 4-2 are pre-embedded on the left and right sides of the bottom plate 4, and a grouting sleeve 5 is arranged in the arch foot of the arch body, and the steel bars 4-2 on the bottom plate 4 are inserted into the arch foot In the grouting sleeve 5, concrete is poured in the grouting sleeve 5, and the surrounding soil 6 is wrapped around the arch body and the periphery of the bottom plate 4 to form a corrugated steel-lined concrete structure for the underground comprehensive pipe gallery;

When the multi-segment corrugated steel-lined concrete structure used for the underground comprehensive utility gallery is longitudinally connected, the prestressed steel bar 7 is vertically threaded through the corrugated steel-lined concrete structure of each segment used for the underground comprehensive utility gallery. In the lined reinforced concrete ring 1, a waterproof ring 8 is arranged between the arch connection gaps of two adjacent segments;

The corrugated steel outer-lined concrete structure used for the underground comprehensive pipe gallery in two adjacent segments is provided with a lined corrugated steel plate 10 at the longitudinal connection, and the inner lined corrugated steel plate 10 is fixed to the inner plate of the arch body corrugated steel plate 2 by the second bolt 12 On the surface, the inner corrugated steel plate 10 is located between the two longitudinally connected segments.

The corrugated steel-lined concrete structure used in the underground comprehensive pipe gallery in this embodiment is compared with the existing reinforced concrete structure, and its overall construction speed is half of that of the cast-in-place reinforced concrete structure. Due to the existence of corrugated steel, the section of the structural bearing capacity is more developed, and its bearing capacity is increased by nearly 20%.

Claims (10)

1. being used for the corrugated steel outer lining concrete structure of underground pipe gallery, it is characterised in that this is used for the wave of underground pipe gallery Line steel outer lining concrete structure includes outer lining reinforced concrete pedosphere (1), arch body corrugated steel (2) and bottom plate (4), and wherein outer lining is mixed Solidifying pedosphere (1), which is coated in the outer plate surface of arch body corrugated steel (2), forms arch body, and in bottom plate (4), laterally the left and right sides is pre- respectively It is embedded with reinforcing bar (4-2), encircles and is provided in the arch springing of body slip casting sleeve (5), in reinforcing bar (4-2) the insertion arch springing on bottom plate (4) In slip casting sleeve (5), it is perfused with concrete in the slip casting sleeve (5), surrounding soil (6) is wrapped in the outer of arch body and bottom plate (4) Enclose the corrugated steel outer lining concrete structure to be formed for underground pipe gallery.

2. the corrugated steel outer lining concrete structure according to claim 1 for underground pipe gallery, it is characterised in that Laterally the left and right sides is provided with flange (4-1) bottom plate (4), and arch body is located between left and right sides flange (4-1).

3. the corrugated steel outer lining concrete structure according to claim 1 for underground pipe gallery, it is characterised in that institute The bottom plate (4) stated is reinforced concrete floor.

4. the corrugated steel outer lining concrete structure according to claim 1 for underground pipe gallery, it is characterised in that Arch body corrugated steel (2) upper surface is welded with shear key (3).

5. the corrugated steel outer lining concrete structure according to claim 1 for underground pipe gallery, it is characterised in that The plate face up and down of bottom plate (4) is respectively arranged with plain plate or corrugated steel.

6. the corrugated steel outer lining concrete structure according to claim 1 for underground pipe gallery, it is characterised in that institute The arch body section stated is circular cross-section, pear-shaped section, box-type section, semi-circular cross-section or half elliptic cross section.

7. the corrugated steel outer lining concrete structure according to claim 1 for underground pipe gallery, it is characterised in that when When corrugated steel outer lining concrete structure of the multi-segmental for underground pipe gallery carries out longitudinally connected, deformed bar (7) is along vertical To be threaded through every segment for underground pipe gallery corrugated steel outer lining concrete structure in outer lining reinforced concrete pedosphere (1) It is interior, water proof ring (8) are provided between the arch body joint gap of two adjacent segments.

8. the corrugated steel outer lining concrete structure according to claim 7 for underground pipe gallery, it is characterised in that The arch body joint gap surface of two adjacent segments is provided with the first waterproof layer (9).

9. the corrugated steel outer lining concrete structure according to claim 7 for underground pipe gallery, it is characterised in that two Corrugated steel outer lining concrete structure of the adjacent segment for underground pipe gallery is provided with liner corrugated steel at longitudinally connected place (10), liner corrugated steel (10) is fixed on the inner plate surface of arch body corrugated steel (2) by the second bolt (12), liner ripple Steel plate (10) is between longitudinally connected two segment.

10. the corrugated steel outer lining concrete structure according to claim 9 for underground pipe gallery, it is characterised in that arch The second waterproof layer (11) are folded between body corrugated steel (2) and liner corrugated steel (10).