CN214274671U

CN214274671U - Face and combine natural gas line protection buttress forever

Info

Publication number: CN214274671U
Application number: CN202120058350.9U
Authority: CN
Inventors: 刘鑫; 袁慧龙; 秦云锋; 张超; 侯磊
Original assignee: China Railway Third Engineering Group Third Engineering Co ltd; China Railway No 3 Engineering Group Co Ltd
Current assignee: China Railway Third Engineering Group Third Engineering Co ltd; China Railway No 3 Engineering Group Co Ltd; Third Engineering Co Ltd of China Railway No 3 Engineering Group Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-09-24
Anticipated expiration: 2031-01-11

Abstract

The utility model is applied to secondary excavation and support of the buried natural gas pipeline, in particular to a permanent temporary combined natural gas pipeline protection buttress; the protective buttress comprises a temporary buttress and a permanent buttress, the temporary buttress comprises a steel pipe bent frame, the steel pipe bent frame is arranged at the bottom of the natural gas pipeline to support the natural gas pipeline, a hard base plate is arranged below supporting legs of the steel pipe bent frame, and a rubber pad is lined between the steel pipe bent frame and the natural gas pipeline; the permanent buttress comprises a buttress outer die and a temporary buttress, the lower section of the steel pipe bent is embedded into a bottom plate of the culvert, the buttress outer die comprises a front half die and a rear half die, the front half die and the rear half die are buckled and then sleeved outside the exposed section of the steel pipe bent, the buttress outer die crosses over the bottom of the natural gas pipeline, and concrete is filled in the buttress outer die to form a permanent concrete foundation. The utility model provides an existing natural gas line excavation when strut construction, temporary support and permanent support separately construct the problem that wastes time and energy. The excavation safety of the natural gas pipeline can be guaranteed, the construction period is shortened, and the work efficiency is improved.

Description

Face and combine natural gas line protection buttress forever

Technical Field

The utility model belongs to the technical field of natural gas line struts, the use is strutted in the secondary excavation of the natural gas line that has been buried to specific application, concretely relates to face forever and combine natural gas line protection buttress.

Background

In the railway roadbed construction, the roadbed often crosses the existing natural gas pipeline, the existing natural gas pipeline needs to be protected before the roadbed is filled, and the common method is to build a culvert at the position of the natural gas pipeline to protect the pipeline in the culvert. When the culvert is constructed, a foundation pit is excavated, and a suspended natural gas pipeline needs to be supported. The method generally adopts the mode that temporary square timber support is firstly carried out, and after the construction of the culvert is finished, the construction of permanent support of the concrete buttress is carried out. Need permanent support to reach design requirement the detachable temporary support in back simultaneously, this makes natural gas line protection culvert whole time limit for a project receive the influence, and simultaneously because the inside construction space is little is accomplished to the culvert, the construction degree of difficulty increases and leads to the cost of culvert also can improve.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a when the construction is strutted in order to solve existing natural gas line excavation, temporary support and permanent support separately construct the problem that wastes time and energy. The excavation safety of the natural gas pipeline can be guaranteed, the construction period is shortened, and the work efficiency is improved.

In order to achieve the purpose, the utility model provides a face and combine natural gas line protection buttress forever, protection buttress distributes and supports natural gas line in the culvert region, and protection buttress includes interim buttress and permanent buttress, interim buttress includes the steel pipe framed bent, the steel pipe framed bent sets up and holds up natural gas line in the natural gas line bottom, be provided with the stereoplasm backing plate under the stabilizer blade of steel pipe framed bent, the lining has the rubber pad between natural gas line and the steel pipe framed bent; the permanent buttress comprises a buttress outer die and the temporary buttress, wherein the lower section of the steel pipe bent is embedded into a concrete bottom plate of the culvert, the buttress outer die comprises a front half die and a rear half die, the front half die and the rear half die are buckled and then sleeved outside the exposed section of the upper section of the steel pipe bent, the buttress outer die crosses the bottom of the natural gas pipeline, and the buttress outer die is filled with concrete to form a permanent concrete foundation.

Furthermore, the steel pipe bent frame comprises four vertical pipes arranged at four corners of a virtual rectangle, transverse pipes are connected between the vertical pipes, the transverse pipes surround to form an upper rectangular frame and a lower rectangular frame, the natural gas pipeline is lapped on the front transverse pipe and the rear transverse pipe of the top rectangular frame, and rubber pads are lined on the transverse pipes; the transverse pipe and the vertical pipe are connected by a steel pipe fastener.

Furthermore, the rectangular frame is arranged in the exposed section of the upper section of the steel pipe bent frame, the rectangular frame is arranged in an upper layer and a lower layer, and the rectangular frame on the upper layer is close to the top pipe orifice of the vertical pipe.

Further, the buttress overmold spans a riser.

Furthermore, the buttress outer die is a corrugated pipe, the corrugated pipe is split along the axis to form the front half die and the rear half die, and the steel wire tightening hoop is wound outside the front half die and the rear half die.

Furthermore, a whole hard base plate is arranged below the single steel pipe bent frame, and the hard base plate is a wood plate or a steel plate.

Compared with the prior art, the utility model has the advantages that:

the utility model provides a face to combine natural gas line protection buttress forever, satisfy the requirement of strutting of natural gas line during the whole culvert construction, in the initial stage of culvert construction, adopt the steel pipe to make the support, as the temporary support of natural gas line; after the culvert bottom plate is poured, the corrugated pipe is sleeved outside the steel pipe bent frame and serves as a pouring mold of a permanent concrete foundation, when the culvert is constructed, concrete is poured on the steel pipe bent frame to form a permanent support, the steel pipe bent frame serves as a reinforcing bar support, and the permanent concrete foundation is not cracked or collapsed; the steel pipe bent frame adopts four riser, upper and lower two sets of violently pipes, and wherein every group violently manages including four violently pipes end to end connection, guarantees to support stably before the culvert bottom plate is pour, pours the back with permanent concrete foundation an organic whole, because its structure is retrencied, and construction cost does not have obvious improvement than the steel reinforcement cage structure in the past.

Run into railway roadbed cross natural gas line, construct the natural gas protection and contain the condition, adopt the utility model discloses a when the protection buttress construction, will strut temporarily and strut once construction with permanent, save permanent support construction and strut temporarily and remove the time, compress construction cycle, practice thrift the temporary support expense simultaneously.

Drawings

Fig. 1 is a schematic diagram of a protection buttress after being buried with sand in a culvert.

Fig. 2 is a schematic structural view of the temporary pier.

Fig. 3 is a schematic view of the first step of permanent pier support.

Fig. 4 is a schematic diagram of a second step of permanent buttress support.

Fig. 5 is a schematic view of the third step of the permanent buttress support.

Fig. 6 is a top view of fig. 4.

In the figure: 1-a hard backing plate; 2-steel tube bent; 2.1-riser; 2.2-steel pipe fasteners; 2.3-horizontal tube; 3, rubber cushion; 4-a natural gas pipeline; 5-concrete bottom plate; 6-buttress external mold; 7-steel wire; 8-permanent concrete foundation; 9-culvert wall; 10-sand.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. The drawings are only for the purpose of understanding the technical content of the invention and do not represent the actual scale and the actual shape of the product, wherein the same reference numbers indicate parts which are identical in structure or function but similar in structure.

In this context, "parallel", "perpendicular", and the like are not strictly mathematical and/or geometric limitations, but may also include tolerances as would be understood by one skilled in the art and allowed for in the manufacture or use of the product. In addition, "perpendicular" includes not only mutually perpendicular in which two objects are directly connected in space but also mutually perpendicular in which two objects are not connected in space.

A protection buttress for permanently and temporarily combining natural gas pipelines is distributed in a culvert area to support the natural gas pipelines and comprises temporary buttresses and permanent buttresses, wherein in the initial construction stage of the culvert, before the construction of a bottom plate of the culvert and after the natural gas pipelines are excavated, as shown in figure 2; and (4) supporting the excavated natural gas pipeline suspended section by using the temporary buttress. The temporary buttress comprises steel pipe bent frames 2, the steel pipe bent frames 2 are arranged at the bottoms of natural gas pipelines 4 to support the natural gas pipelines, the earth surface in the culvert area is bare soil before concrete bottom plate pouring, in order to prevent the steel pipe bent frames 2 from collapsing, hard base plates 1 are arranged under supporting legs of the steel pipe bent frames 2, a whole hard base plate 1 is arranged under each single steel pipe bent frame 2, and the hard base plate 1 is made of wood plates or steel plates; rubber pads 3 are lined between the steel pipe bent frames 2 and the natural gas pipeline 4, and the natural gas pipeline is protected. With the excavation of the natural gas pipeline, constructing a culvert structure by the excavated support section; the newly excavated segment is continuously supported by temporary buttresses, and a concrete bottom plate 5 of a culvert is poured in the excavated segment; and meanwhile, the temporary buttress is continuously constructed to form a permanent buttress.

And in the excavation process of the natural gas pipeline 4, excavating to about 20cm of culvert foundation treatment elevation, and adopting manual excavation. The culvert foundation pit excavation adopts subsection excavation, and the steel pipe bent is supported in subsection.

As shown in fig. 3, 4, 5, 6; the permanent buttress comprises a buttress external mold 6 and a temporary buttress, wherein the lower section of the steel pipe bent 2 is embedded into the concrete bottom plate 5 of the culvert, and the steel pipe bent 2 and the concrete bottom plate 5 are cast into a whole; the buttress external mold 6 comprises a front half mold and a rear half mold, the front half mold and the rear half mold are buckled and then sleeved outside the exposed section of the upper section of the steel pipe bent frame 2, the buttress external mold 6 passes through the bottom of the natural gas pipeline, concrete is filled in the buttress external mold 6 to form a permanent concrete foundation 8, and after the permanent concrete foundation 8 is condensed, the top surface naturally forms a circular groove concave surface matched with the bottom of the natural gas pipeline to prevent the natural gas pipeline from deviating.

As shown in fig. 1; and after the culvert bottom plate and the culvert walls are poured, burying the natural gas pipeline sand in the culvert.

Specifically, the steel pipe bent frame 2 comprises four vertical pipes 2.1 arranged at four corners of a virtual rectangle, transverse pipes 2.3 are connected between the vertical pipes 2.1, the transverse pipes 2.3 enclose to form an upper and a lower multi-layer rectangular frames, natural gas pipelines 4 are lapped on the front and rear transverse pipes of the top layer rectangular frame, and rubber pads 3 are lined on the transverse pipes; the transverse pipe 2.3 and the vertical pipe 2.1 are connected by a steel pipe fastener 2.2. The vertical pipe 2.1 and the horizontal pipe 2.3 adopt phi 60 galvanized round steel pipes to prevent materials from being rusted in the using process. The rectangle frame sets up in the exposed section of steel pipe bent 2's upper segment, and the rectangle frame sets up upper and lower two-layer, can guarantee steel pipe bent 2's bulk rigidity, is difficult to take place to warp, ensures to lift by crane and normally goes on. The upper rectangular frame is close to the top pipe orifice of the stand pipe 2.1, namely, the steel pipe fastener connected to the upper rectangular frame is flush with the top pipe orifice of the stand pipe.

According to the field environment and the construction cost, the buttress external mold 6 is made of corrugated pipes, the corrugated pipes are split along the axis to form a front half mold and a rear half mold, and steel wires 7 are wound outside the front half mold and the rear half mold to be tightly hooped. Pier outer mold 6 passes over riser 2.1.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a face and combine natural gas line protection buttress forever which characterized in that: the protective buttress is distributed in a culvert area to support a natural gas pipeline and comprises temporary buttresses and permanent buttresses, each temporary buttress comprises a steel pipe bent (2), each steel pipe bent (2) is arranged at the bottom of the natural gas pipeline (4) to support the natural gas pipeline, a hard base plate (1) is arranged below supporting legs of each steel pipe bent (2), and a rubber pad (3) is lined between each steel pipe bent (2) and the corresponding natural gas pipeline (4); permanent buttress includes buttress external mold (6) and interim buttress, wherein, in concrete bottom plate (5) of culvert are buried to the hypomere of steel pipe framed bent (2), buttress external mold (6) includes front half mould and back half mould, cover outside the exposed section of the upper segment of steel pipe framed bent (2) after front and back half mould lock, at the bottom of natural gas line is crossed to buttress external mold (6), fills in buttress external mold (6) concrete formation permanent concrete foundation (8).

2. The permanently bonded natural gas pipeline protection buttress of claim 1, wherein: the steel pipe bent frame (2) comprises four vertical pipes (2.1) arranged at four corners of a virtual rectangle, transverse pipes (2.3) are connected between the vertical pipes (2.1), the transverse pipes (2.3) enclose and form an upper and a lower multi-layer rectangular frames, the natural gas pipeline (4) is erected on the front and rear transverse pipes of the top layer rectangular frame, and rubber pads (3) are lined on the transverse pipes; the transverse pipe (2.3) and the vertical pipe (2.1) are connected by a steel pipe fastener (2.2).

3. The permanently bonded natural gas pipeline protection buttress of claim 2, wherein: the rectangle frame sets up in the exposed section of upper segment of steel pipe bent frame (2), and the rectangle frame sets up upper and lower two-layer, and the upper rectangle frame is pressed close to riser (2.1) top mouth of pipe.

4. The permanently bonded natural gas pipeline protection buttress of claim 3, wherein: the buttress outer die (6) crosses the vertical pipe (2.1).

5. The permanently bonded natural gas pipeline protection buttress of claim 2, wherein: the buttress outer die (6) is a corrugated pipe, the corrugated pipe is split along the axis to form the front half die and the rear half die, and the front half die and the rear half die are wound with steel wires (7) to be tightly hooped.

6. The permanently bonded natural gas pipeline protection buttress according to any one of claims 1-5, wherein: a whole hard base plate (1) is arranged below the steel pipe bent frame (2), and the hard base plate (1) is a wood plate or a steel plate.