CN219568970U - Construction structure for protecting water conveying pipeline of existing city trunk line - Google Patents

Abstract

The utility model relates to a construction structure for protecting a water pipe of an existing urban trunk line, which comprises a water pipe foundation pit supporting structure and a water pipe encapsulating structure, wherein the water pipe foundation pit supporting structure comprises steel sheet piles, longitudinal combined rib beams and transverse support steel beams, the steel sheet piles are arranged around the side wall of the water pipe foundation pit to form foundation pit enclosure surfaces, the longitudinal combined rib beams are arranged on the foundation pit enclosure surfaces on two sides, and the transverse support steel beams are in butt connection with the longitudinal combined rib beams on two sides; the water pipe encapsulation structure comprises a pipe support bracket, one-stage concrete pouring, an encapsulation reinforcement cage and two-stage concrete pouring, wherein the pipe support bracket is supported at the bottom of the water pipe through a guide groove excavated at the bottom of the pipe, one-stage concrete pouring is performed on the guide groove, the encapsulation reinforcement cage is bound on the periphery of the water pipe, and the two-stage concrete pouring is performed on the encapsulation reinforcement cage. The utility model protects the double construction structure through the supporting structure and the encapsulating structure, and can ensure the construction safety while protecting the existing water pipeline.

Description

Construction structure for protecting water conveying pipeline of existing city trunk line

Technical Field

The utility model relates to the technical field of protection and reinforcement of existing building pipelines, in particular to a construction structure for protecting an existing urban trunk water pipeline.

Background

When the foundation pit slot earthwork excavation of the underground urban engineering pipeline is carried out, the existing pipeline (such as a water supply pipeline) is often encountered, is arranged in a crossing manner with the underground urban engineering pipeline to be built and is positioned right above the underground urban engineering pipeline to be built, the existing pipeline is moved and changed for a long time, the construction period is influenced, the cost is high, and in order to construct and plan a new underground engineering pipeline near the periphery of the existing pipeline and construct and plan a new road above the existing pipeline, reasonable protection measures must be adopted to protect the existing pipeline.

Therefore, it is necessary to provide a new existing pipeline protection construction structure which saves investment, reduces damage to surrounding environment, and also saves influence of disassembly and modification on construction period compared with the traditional method.

Disclosure of Invention

In view of the shortcomings of the prior art, a primary object of the present utility model is to provide a construction structure for protection of existing urban trunk water pipelines, which solves one or more problems of the prior art.

The technical scheme of the utility model is as follows:

the utility model provides a construction structure for protecting a water pipe of an existing urban trunk line, which comprises a water pipe foundation pit supporting structure and a water pipe encapsulating structure, wherein:

the water pipe foundation pit supporting structure comprises steel sheet piles, longitudinal combined rib beams and transverse strut steel beams, wherein the steel sheet piles are arranged around the side wall of a water pipe foundation pit, adjacent steel sheet piles are connected in a meshed mode to form foundation pit enclosure surfaces, the longitudinal combined rib beams are horizontally and symmetrically arranged on the foundation pit enclosure surfaces on two sides, and the transverse strut steel beams are connected to the longitudinal combined rib beams on two sides in a butt joint mode;

the water pipe encapsulation structure comprises a pipe support bracket, one-stage casting concrete, an encapsulation reinforcement cage and two-stage casting concrete, wherein the pipe support bracket is supported at the bottom of the water pipe through a guide groove excavated at the bottom of the pipe, the one-stage casting concrete is cast in the guide groove, the encapsulation reinforcement cage is bound on the periphery of the water pipe, and the two-stage casting concrete is cast in the encapsulation reinforcement cage.

Preferably, the steel sheet piles are Lasen steel sheet piles, lock catches are arranged at two ends of the Lasen steel sheet piles, and adjacent Lasen steel sheet piles are mutually buckled and connected back to back through the lock catches arranged at the ends of the Lasen steel sheet piles.

Preferably, the longitudinal combined rib beam adopts double-spliced channel steel, and comprises two first U-shaped steel plates and two first batten plates, wherein the two first U-shaped steel plates are connected in a back-to-back welding way through the two first batten plates, the two first batten plates are correspondingly welded on the outer surfaces of flange plates of the two first U-shaped steel plates, and the longitudinal combined rib beam is connected with steel sheet piles in a welding way through one of the first batten plates.

Preferably, the transverse strut steel beam adopts double-spliced channel steel, and comprises two second U-shaped steel plates and two second batten plates, wherein the two second U-shaped steel plates are connected through two second batten plates in a surrounding and welding mode, and the two second batten plates are correspondingly welded on the outer surfaces of flange plates of the two second U-shaped steel plates.

Preferably, two ends of the transverse strut steel beam are correspondingly welded with the longitudinal combined rib beams respectively, and the height of a welded seam is not less than 8mm.

Preferably, diagonal bracing members are arranged at corners where the longitudinal combined rib beams are connected with the transverse bracing steel beams, one ends of the diagonal bracing members are connected with the longitudinal combined rib beams in a welding mode, and the other ends of the diagonal bracing members are connected with the transverse bracing steel beams in a welding mode.

Preferably, the pipe bracket is formed by welding a bottom plate, a supporting rib plate and an arc-shaped supporting plate, the bottom of the supporting rib plate is in welded connection with the bottom plate, the top of the supporting rib plate is in welded connection with the arc-shaped supporting plate, and the arc-shaped supporting plate and the water conveying pipeline are concentrically arranged and are used for being clung to the pipe wall of the water conveying pipeline.

Preferably, the supporting rib plate is a ship-shaped steel plate, the radian of the top surface of the ship-shaped steel plate is matched with the radian of the arc-shaped supporting plate, the left end and the right end of the ship-shaped steel plate correspond to the two ends of the arc-shaped supporting plate and are subjected to angle cutting along the circle center direction, and a plurality of stiffening ribs are welded on the ship-shaped steel plate along the radial direction.

Preferably, the thickness of the one-stage casting concrete is consistent with the gap at the bottom of the water pipe.

Preferably, the section shape of the binding of the encapsulation reinforcement cage is rectangular.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a construction structure for protecting an existing urban trunk line water conveying pipeline, which is used for protecting the double construction structure through a supporting structure and an encapsulating structure, and can effectively protect the existing water conveying pipeline and ensure construction safety. The utility model firstly adopts the steel sheet piles, the longitudinal combined rib beams and the transverse strut steel beams to carry out supporting structure protection on the existing water conveying pipeline, then adopts the concrete encapsulation to carry out encapsulation structure protection on the existing water conveying pipeline, and the double reinforcement protection can ensure the safety of the existing water conveying pipeline and the safety of constructors. According to the utility model, the existing water pipeline is protected by the foundation pit supporting structure and the encapsulating structure of the water pipeline in situ, so that the existing pipeline is not required to be changed, the construction period is saved, and the construction cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims.

FIG. 1 is a schematic view in longitudinal section of a construction structure according to some embodiments of the present utility model;

fig. 2 is a schematic transverse plan view of a water pipe foundation pit supporting structure according to some embodiments of the present utility model;

fig. 3 is a schematic longitudinal plan view of a supporting structure of a water pipe foundation pit according to some embodiments of the present utility model;

FIG. 4 is a schematic cross-sectional view of FIG. 3, wherein (a) is a schematic cross-sectional view of 1-1 and (b) is a schematic cross-sectional view of 2-2;

FIG. 5 is a schematic view of a longitudinal composite rib beam and cross-brace steel beam installation according to some embodiments of the present utility model;

FIG. 6 is a schematic view of a steel sheet pile structure according to some embodiments of the present utility model;

fig. 7 is a schematic view of a construction process of a water pipe encapsulation structure according to some embodiments of the present utility model, wherein (a) is a supporting bracket, (b) is a casting one-stage concrete casting, and (c) is a binding encapsulation reinforcement cage and a casting two-stage concrete casting;

FIG. 8 is a schematic front elevational view of a pipe bracket according to some embodiments of the present utility model;

fig. 9 is a schematic side elevation view of a cradle of some embodiments of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the embodiments and the accompanying drawings. The exemplary embodiments of the present utility model and their descriptions herein are for the purpose of explaining the present utility model, but are not to be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method as desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," and the like, does not exclude the presence of other like elements in a product, apparatus, process, or method that includes the element.

It is further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present utility model and to simplify the description, and do not indicate or imply that the devices, components, or structures referred to must have a particular orientation, be configured or operated in a particular orientation, and are not to be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the existing engineering, the condition that the water supply pipeline crosses along the lower part of the existing water supply pipeline exists in the construction process of the planned water supply pipeline, at this time, the crossing part of the water supply pipeline is required to be changed, however, the direct transfer of the crossing section of the water supply pipeline can take a long time and the construction steps are complex, so that the crossing part of the water supply pipeline needs to be encapsulated, reinforced and protected in situ.

The utility model takes the water supply pipeline of the Beijing (Sun Gongbei street-airport south line) road engineering as an example, in the engineering, the water supply pipeline refers to the existing water supply pipeline above the planned pipeline, the burial depth of the existing water supply pipeline is more than 5m, the pipe diameter is DN2000, and the encapsulation and reinforcement length is about 7016m.

The intersection section of the existing water conveying pipeline and the planned pipeline in the project is avoided according to the pipeline comprehensive design and the requirements of urban engineering pipeline comprehensive planning Specification (GB 50289-2016).

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1 to 9, the utility model provides a construction structure for protecting an existing urban trunk water pipeline, which comprises a water pipeline foundation pit supporting structure 1 and a water pipeline encapsulating structure 2. The double construction structure protection is carried out through the water pipe foundation pit supporting structure 1 and the water pipe encapsulating structure 2, so that the water pipe 3 is effectively protected, and meanwhile, the construction safety is ensured.

Referring to fig. 1 to 5, the water pipe foundation pit supporting structure 1 includes steel sheet piles 101, longitudinal composite rib beams 102, and cross-bracing steel beams 103. The steel sheet piles 101 are arranged around the side wall of the water pipe foundation pit 4, the adjacent steel sheet piles 101 are connected in a meshed mode to form foundation pit enclosure surfaces, the longitudinal combined rib beams 102 are horizontally and symmetrically arranged on the foundation pit enclosure surfaces on two sides along a certain height, and the transverse strut steel beams 103 are in butt connection with the longitudinal combined rib beams 102 on two sides at a certain distance.

According to the utility model, the longitudinal combined rib beams 102 and the transverse strut steel beams 103 are arranged in the water pipe foundation pit 4, and the supporting effect of the longitudinal combined rib beams 102 and the transverse strut steel beams 103 is transferred to the whole supporting structure through the steel sheet piles 101, so that the supporting strength of the supporting structure is greatly improved, and the stability of the water pipe foundation pit 4 is ensured.

Referring to fig. 3, the width of the water pipe foundation pit 4 is 4600mm, and the distance between adjacent cross-strut steel beams 103 is 4800mm.

In the utility model, the water pipe foundation pit supporting structure 1 is arranged in the foundation pit excavated by the existing water pipe 3, and in order to ensure the safety and normal use of building (construction), underground and overground pipelines, roads and other facilities, corresponding protection measures are adopted for the foundation pit excavated by the existing water pipe 3, and the foundation pit supporting structure must be reinforced and monitored during construction to measure less than 8m and does not have the working condition of a slope releasing condition. And the foundation pit monitoring is carried out according to the requirements of the technical regulations for monitoring building foundation pit engineering (GB 5047-2009) and the Beijing Jianfu [2013]435 document, so that informationized construction is realized.

In the utility model, referring to fig. 5, in order to ensure construction safety and the support level of the water pipe foundation pit support structure 1, steel sheet piles 101 are driven into a foundation pit to be excavated, then earth excavation is carried out, and when the earth excavation depth reaches 1.5m, longitudinal combined rib beams 102 and transverse strut steel beams 103 are installed along the steel sheet piles 101 at the inner side of the foundation pit.

In some embodiments, the steel sheet piles 101 are lassen steel sheet piles for improving the tensile strength of the water pipe foundation pit supporting structure 1. The Larson steel sheet piles are arranged in rows along the side wall of the water pipeline foundation pit 4, the two ends of each Larson steel sheet pile are provided with lock catches, and the adjacent Larson steel sheet piles are mutually buckled and connected back to each other through the lock catches arranged at the ends of the Larson steel sheet piles.

In some embodiments, the Larson steel sheet pile has a width of 400mm, a height of 170mm, a thickness of 15.5mm, and a length of 12m, so as to be suitable for the water pipe foundation pit 4 with a grooving depth of 5m or more.

Referring to fig. 6, the steel sheet pile 101 has an approximately U-shaped cross-sectional shape, and includes a pile bottom plate 1011 and pile tilt plates 1021 arranged to be spread outward along both side edges of the pile bottom plate 1011, pile hooks 1031 bent outward are provided at the ends of the pile tilt plates 1021, the steel sheet piles 101 are arranged to be staggered along the side walls of the water pipe foundation pit 4, and adjacent steel sheet piles 101 are butt-connected by the pile hooks 1031.

In some embodiments, referring to fig. 3 and 4, the longitudinal composite rib beam 102 is a double-spliced channel steel, preferably C32, to enhance the longitudinal support strength of the water pipe foundation pit support structure 1. In one embodiment, as shown in fig. 4 (a), the longitudinal composite rib 102 includes two first U-shaped steel plates 1012 and two first gusset plates 1022, and the two first U-shaped steel plates 1012 are disposed back to back and are welded together by the two first gusset plates 1022.

Preferably, two first battens 1022 are welded on the outer surfaces of the flange plates of the two first U-shaped steel plates 1012 correspondingly, and referring to fig. 5, the longitudinal combined rib beam 102 is welded with the steel sheet pile 101 through one of the first battens 1022.

The two first U-shaped steel plates 1012 may be disposed back to back at a predetermined distance, or may be disposed in a back to back and close contact manner. The present utility model preferably provides two first U-shaped steel plates 1012 spaced 144mm apart so as to correspond to the cross brace steel beams 103.

With continued reference to fig. 3 and 4, the cross bracing steel beam 103 is a double-spliced channel steel, and the model of the cross bracing steel beam is preferably C30, so as to enhance the transverse supporting strength of the water pipe foundation pit supporting structure 1. In one embodiment, as shown in fig. 4 (b), the wale girder 103 includes two second U-shaped steel plates 1013 and two second gusset plates 1023, and the two second U-shaped steel plates 1013 are joined by welding around the two second gusset plates 1023.

Preferably, two second gusset plates 1023 are welded to the outer surfaces of the flanges of two second U-shaped steel plates 1013.

In some embodiments, two ends of the cross brace steel beam 103 are welded to the longitudinal composite rib beam 102, respectively. Preferably, the height of the welding seam between the end of the transverse support steel beam 103 and the longitudinal combined rib beam 102 is not less than 8mm, so as to ensure the stability of transverse support of the transverse support steel beam 103.

In some embodiments, referring to fig. 3, diagonal strut members 104, preferably C25 in type, are provided at the corners of the longitudinal composite rib beam 102 where it joins the cross-brace steel beams 103 for enhancing the support strength of the ends of the cross-brace steel beams 103. In one embodiment, diagonal strut members 104 are welded to longitudinal composite rib beams 102 at one end and to cross strut steel beams 103 at the other end.

Preferably, the diagonal strut members 104, the longitudinal combined rib beams 102 and the transverse strut steel beams 103 form a 45-degree clamping degree, and the diagonal strut members 104 are correspondingly welded below the transverse strut steel beams 103.

Referring to fig. 1 and 7, the water pipe encapsulation structure 2 includes a pipe bracket 201, a one-stage casting concrete 202, an encapsulation reinforcement cage 203, and a two-stage casting concrete 204.

Referring to fig. 7 (a), a pipe bracket 201 is supported at the bottom of the water pipe 3 through a guide groove 5 excavated under the water pipe 3 for supporting the water pipe 3 from being deformed by sedimentation.

In some embodiments, the guide grooves 5 are excavated at every 3m at the bottom of the water pipe 3, and the excavation width of the guide grooves 5 is preferably 40cm, and the depth is preferably 50cm.

Referring to (b) of fig. 7, one-stage casting concrete 202 is cast in the guide groove 5 together with the bottom of the pipe bracket 201 after the pipe bracket 201 is erected, for enhancing the stability of the support of the pipe bracket 201 and reducing the lateral movement of the pipe bracket 201.

In the utility model, the casting elevation, namely the thickness, of the one-stage casting concrete 202 is not lower than the bottom of the water pipeline, so that the conversion of the stress system of the existing water pipeline can be completed in time, and safe and stable conditions are created for the construction of the rest sections of the pipeline.

The thickness of the one-stage casting concrete 202 is preferably consistent with the gap at the bottom of the water pipe.

Referring to (c) of fig. 7, the packing reinforcement cage 203 is bound to the outer circumference of the water pipe 3. Preferably, the cross-sectional shape of the binding of the encapsulation reinforcement cage 203 is rectangular. The rectangular section is favorable for processing and mounting of the reinforcing steel bars and formwork support, and construction is more convenient and quick.

With continued reference to fig. 7 (c), after the one-stage cast concrete 202 is finally set, the two-stage cast concrete 204 is installed with the encapsulation reinforcement cage 203, the form is erected, and then the encapsulation reinforcement cage 203 is cast.

Referring to fig. 8 and 9, the pipe bracket 201 is welded by a bottom plate 2011, a support rib 2021 and an arc-shaped supporting plate 2031. The bottom of the supporting rib plate 2021 is welded with the bottom plate 2011, the top of the supporting rib plate 2021 is welded with the arc-shaped supporting plate 2031, and the arc-shaped supporting plate 2031 is concentrically arranged with the water pipe 3 so as to be tightly attached to the pipe wall of the water pipe 3.

In some embodiments, with continued reference to fig. 8, the cross-sectional shape of the support rib 2021 approximates a boat-shaped steel plate, the radian of the top surface of the boat-shaped steel plate is matched with that of the arc-shaped supporting plate 2031, and the left and right ends of the boat-shaped steel plate are cut at angles along the center direction corresponding to the two ends of the arc-shaped supporting plate 2031, so that steel can be saved while the support is stable.

In some embodiments, with continued reference to FIG. 8, a plurality of stiffening ribs 2041 are welded radially to the surface of the support rib 2021 to enhance the support strength of the support rib 2021.

The utility model protects the double construction structures of the foundation pit supporting structure and the encapsulating structure of the water conveying pipeline on site, does not need to carry out transition and modification on the existing pipeline, can ensure the construction safety while effectively protecting the existing water conveying pipeline, saves the construction period and saves the construction cost.

The construction sequence of the construction structure for protecting the existing urban trunk water pipeline is as follows: steel sheet pile driving, earth excavation for 1.5m deep, longitudinal combined rib beam installation, transverse supporting steel beam installation, earth excavation, pipe support supporting, casting of one-stage concrete casting, steel reinforcement cage binding and encapsulation, formwork supporting, casting of two-stage concrete casting, form stripping, foundation pit backfilling, longitudinal combined rib beam and transverse supporting steel beam dismantling, steel sheet pile pulling and hole filling.

In the construction sequence, before the steel sheet pile is driven, the steel sheet pile is required to be inspected one by one, the common steel sheet pile with severe rust and deformation of the connecting lock catch is removed, and when the steel sheet pile is driven, grease is coated in the lock catch of the steel sheet pile so as to facilitate driving and pulling out.

Pile holes left after the steel sheet piles are pulled out must be backfilled in time. The backfilling method adopts a filling method, and the filling method adopts sand as a material.

It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a construction structure for protection of existing city trunk line water pipe, its characterized in that includes water pipe foundation ditch supporting construction and water pipe encapsulation structure, wherein:

the water pipe foundation pit supporting structure comprises steel sheet piles, longitudinal combined rib beams and transverse strut steel beams, wherein the steel sheet piles are arranged around the side wall of a water pipe foundation pit, adjacent steel sheet piles are connected in a meshed mode to form foundation pit enclosure surfaces, the longitudinal combined rib beams are horizontally and symmetrically arranged on the foundation pit enclosure surfaces on two sides, and the transverse strut steel beams are connected to the longitudinal combined rib beams on two sides in a butt joint mode;

the water pipe encapsulation structure comprises a pipe support bracket, one-stage casting concrete, an encapsulation reinforcement cage and two-stage casting concrete, wherein the pipe support bracket is supported at the bottom of the water pipe through a guide groove excavated at the bottom of the pipe, the one-stage casting concrete is cast in the guide groove, the encapsulation reinforcement cage is bound on the periphery of the water pipe, and the two-stage casting concrete is cast in the encapsulation reinforcement cage.

2. The construction structure according to claim 1, wherein the steel sheet piles are lasson steel sheet piles, lock catches are provided at both ends of the lasson steel sheet piles, and adjacent lasson steel sheet piles are connected by locking the lock catches provided at the ends thereof and facing away from each other.

3. The construction structure of claim 1, wherein the longitudinal combined rib beam is a double-spliced channel steel and comprises two first U-shaped steel plates and two first batten plates, the two first U-shaped steel plates are connected in a back-to-back welding manner through the two first batten plates, the two first batten plates are correspondingly welded on the outer surfaces of flange plates of the two first U-shaped steel plates, and the longitudinal combined rib beam is connected with steel sheet piles in a welding manner through one of the first batten plates.

4. The construction structure of claim 1, wherein the cross brace steel beam is a double-spliced channel steel and comprises two second U-shaped steel plates and two second batten plates, the two second U-shaped steel plates are connected through two second batten plates in a surrounding welding mode, and the two second batten plates are correspondingly welded on the outer surfaces of flange plates of the two second U-shaped steel plates.

5. The construction structure according to claim 4, wherein both ends of the cross brace steel beam are welded to the longitudinal composite rib beams, respectively, correspondingly, and the welded seam height is not less than 8mm.

6. The construction structure according to claim 1, wherein diagonal strut members are provided at corners where the longitudinal composite rib beams are connected to the cross brace steel beams, one ends of the diagonal strut members are welded to the longitudinal composite rib beams, and the other ends of the diagonal strut members are welded to the cross brace steel beams.

7. The construction structure according to claim 1, wherein the pipe bracket is formed by welding a bottom plate, a supporting rib plate and an arc-shaped supporting plate, the bottom of the supporting rib plate is welded with the bottom plate, the top of the supporting rib plate is welded with the arc-shaped supporting plate, and the arc-shaped supporting plate is concentrically arranged with the water conveying pipeline and is used for being clung to the pipe wall of the water conveying pipeline.

8. The construction structure according to claim 7, wherein the supporting rib plate is a ship-shaped steel plate, the radian of the top surface of the ship-shaped steel plate is matched with the radian of the arc-shaped supporting plate, the left and right ends of the ship-shaped steel plate are cut at angles along the center direction corresponding to the two ends of the arc-shaped supporting plate, and a plurality of stiffening ribs are welded on the ship-shaped steel plate along the radial direction.

9. The construction structure according to claim 1, wherein the thickness of the one-stage casting concrete is in conformity with the pipe bottom gap of the water pipe.

10. The construction structure according to claim 1, wherein the cross-sectional shape of the packing reinforcement cage is rectangular.