CN113756342A

CN113756342A - Underwater formwork in limited closed space and formwork sealing method

Info

Publication number: CN113756342A
Application number: CN202111050326.1A
Authority: CN
Inventors: 贺柯翔; 李兵; 杨菲
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-12-07
Anticipated expiration: 2041-09-08
Also published as: CN113756342B

Abstract

The application provides a limited space underwater template and a mold sealing method, wherein the limited space underwater template comprises: the bases are connected to the bottom of the pipe duct, and the bases are sequentially connected and are respectively arranged on two sides of the vertical pipe in the length direction; the supporting columns are all arranged on a base and can be adjusted in a telescopic mode; the first-layer templates are respectively connected to the bases and the support columns, and the first-layer templates on two sides of the pipeline in the length direction are arranged in parallel; the upper layer templates are respectively arranged on the first layer templates; the pull rods are correspondingly connected to the first layer of templates on the two sides of the pipeline respectively, and/or the upper layer of templates on the two sides of the pipeline are arranged in parallel, and the pull rods can support the pipeline. This application scheme can avoid effectively the washing away to the pipeline, reduces the direct contact of pipeline and water, prevents the pipeline come-up and sink. All templates, the base and the supporting columns can be repeatedly utilized, and construction cost can be effectively reduced.

Description

Underwater formwork in limited closed space and formwork sealing method

Technical Field

The invention belongs to the technical field of underwater pipeline construction, and particularly relates to an underwater template in a limited closed space and a template sealing method.

Background

Along with the continuous increase of production and domestic water consumption, urbanization develops, rainwater and sewage are not shunted when partial areas are planned, or a sewage pipe network cannot meet the urban sewage discharge demand, sewage flows into related water areas, the water quality is in poor V-class water throughout the year, particularly under the condition of 'river in river', and harmful gas is accumulated in the river channel.

In municipal pipeline construction, the PE pipeline has the characteristics of unique flexibility, floatability, ductility, integrity, no leakage and arbitrary connection length, is the best choice for laying pipes in water, combines an innovative and low-cost laying method, promotes the application of the PE pipeline in sewage discharge, water intake, drinking water and domestic sewage pipeline systems, considers the influence of the surrounding environment on the PE pipeline, usually needs to be encapsulated when laying the PE pipeline, mostly adopts a cofferdam process when encapsulating under the water intake, and mainly has steel sheet pile water stopping, sandbag cofferdams and the like.

Disclosure of Invention

In view of the above, the present invention provides a limited space underwater template and a method for sealing the same, so as to solve or overcome at least one technical problem in the prior art.

In a first aspect, there is provided a limited space underwater template comprising:

the base is used for being connected to the bottom of the pipe duct, and the bases are sequentially connected and are respectively arranged on two sides of the vertical pipe in the length direction;

each supporting column is arranged on one base and can be adjusted in a telescopic mode;

the first-layer templates are respectively connected to the bases and the support columns, and the first-layer templates vertical to two sides of the length direction of the pipeline are arranged in parallel;

the upper-layer templates are respectively arranged on the first-layer templates;

the pull rods are correspondingly connected to the first layer of templates on the two sides of the pipeline respectively, and/or the upper layer of templates on the two sides of the pipeline are arranged in parallel, and the pipeline can be supported by the pull rods.

Further, the base includes:

the cross section of each right-angle plate is L-shaped, and each right-angle plate is provided with a plurality of mounting holes;

and the connector is arranged on one side of the length direction of the right-angle plate and is used for joggling the supporting column.

Further, the support column includes:

the first end of the outer pipe is used for being inserted into the base, the middle of the outer pipe is provided with a socket perpendicular to the length direction of the outer pipe, and the outer pipe is provided with a plurality of mounting holes;

the inner tube, it stretches into the second end of outer tube, the inner tube can stretch out and draw back in the outer tube and adjust to relatively fixed, the top of inner tube can shore at the top of canal.

Further, the first layer formwork and the upper layer formwork on the same side are connected through a connecting piece, and the connecting piece can be connected to the supporting column in a tenon mode.

Further, the connector includes:

the ruler rod is arranged on the first layer template and the upper layer template and penetrates through the insertion opening of the supporting column;

the light steel plates are uniformly arranged on the ruler rod and are arranged along the length direction of the ruler rod, each light steel plate is perpendicular to the length direction of the ruler rod, and two sides of each light steel plate in the length direction are respectively connected to the upper layer template and the first layer template through bolts.

Further, both ends on the pull rod all are provided with external screw thread portion, the pull rod is used for wearing to establish the template of pipeline both sides, the both ends of pull rod are connected with locating part and nut respectively, the locating part with the nut sets up respectively in the both sides of each template.

In a second aspect, there is provided a method of underwater sealing a confined space, comprising:

step one, installing a base, respectively arranging the bases on two sides of a pipeline, and fixing the bases at the bottom of a pipe duct through expansion screws;

mounting a support column, namely tenoning the lower end of the support column to the base and fixing the support column;

step three, template installation, namely installing templates on the base and the support columns respectively;

and step four, fixing the pipeline and the templates, heightening and fixing the pipeline through the pull rod, and tightening and fixing the templates on the two sides of the pipeline through the pull rod.

Further, in the second step, the method for fixing the supporting column includes:

fixing the bottom of the support column on the base through a bolt;

relatively fixing the outer pipe and the inner pipe of the support pillar;

the top end of the supporting column is pressed against the top of the pipe duct.

Further, the template includes:

the first-layer templates are connected to the base and the supporting columns;

and the upper-layer templates are correspondingly arranged on the first-layer templates and are connected with the upper-layer templates through connecting pieces.

Further, the pull rod comprises a lower layer pull rod and an upper layer pull rod;

the method for lifting and fixing the pipeline through the pull rod comprises the following steps:

installing lower-layer pull rods at preset elevations at the bottom of the pipe duct, so that the lower-layer pull rods are uniformly distributed along the length direction of the pipeline;

erecting the pipeline on the lower layer pull rod;

and a plurality of upper-layer pull rods are arranged above the pipeline, so that the pipeline is clamped by the upper-layer pull rods and the lower-layer pull rods.

The application has the following beneficial effects:

the application provides a finite space underwater template and a die sealing method, the enclosure of a pipeline is realized through the base and the template, the pipeline can be effectively prevented from being washed, the position of the pipeline is lifted through the pull rod, and the direct contact between the pipeline and water can be effectively reduced. The pipeline can be limited and fixed through the pull rod, and the pipeline can be prevented from floating and sinking. All templates, the base and the supporting columns can be repeatedly utilized, and construction cost can be effectively reduced.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a diagram illustrating the effect of installing a confined space underwater template in a pipeline according to an embodiment of the present invention;

FIG. 2 is an isometric view of a chassis provided in accordance with an embodiment of the present invention;

FIG. 3 is a top view of a base provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a support column provided in accordance with an embodiment of the present invention;

FIG. 5 is an illustration of the effect of a support post provided in accordance with an embodiment of the present invention mounted on a base;

FIG. 6 is an illustration of the effect of a first layer of forms provided in accordance with an embodiment of the present invention mounted on a base and support posts;

FIG. 7 is an illustration of the effect of an upper layer template provided in accordance with an embodiment of the present invention mounted on a first layer template and support posts;

fig. 8 is a simple flowchart of a method for underwater mold sealing in a limited space according to an embodiment of the present invention.

The method comprises the following steps of 1-base, 2-support column, 3-pipeline, 4-pull rod, 5-first layer template, 6-upper layer template, 7-mounting hole, 8-bolt, 9-ruler rod and 10-light steel plate;

11-joint, 21-outer tube, 22-inner tube, 23-spigot.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

In a first aspect, and with reference to fig. 1-7, the present application provides a confined space underwater template comprising: the base 1 is used for being connected to the bottom of a pipe duct, and the bases 1 are sequentially connected and respectively arranged on two sides of the vertical pipe 3 in the length direction; the supporting columns 2 are arranged on the base 1, and the supporting columns 2 can be adjusted in a telescopic mode; the first-layer templates 5 are respectively connected to the bases 1 and the support columns 2, and the first-layer templates 5 perpendicular to two sides of the length direction of the pipeline 3 are arranged in parallel; the upper-layer templates 6 are respectively arranged on the first-layer templates 5; the pipeline supporting device comprises pull rods 4, wherein the pull rods 4 are respectively and correspondingly connected with first-layer templates 5 on two sides of the pipeline 3, and/or upper-layer templates 6 on two sides of the pipeline 3, the pull rods 4 are arranged in parallel, and the pipeline 3 can be supported by the pull rods 4.

The application provides a limited space is template under water is applicable to the underground highest water level and is no longer than 2 meters, and highest water level is no longer than 1.2 meters airtight space during the construction.

In the present embodiment, referring to fig. 2 and 3, the base 1 includes: the cross section of each right-angle plate is L-shaped, and each right-angle plate is provided with a plurality of mounting holes 7; and the joint 11 is arranged on one side of the length direction of the rectangular plate, and the joint 11 is used for joggling the supporting column 2. The fitting 11 is also provided with a mounting hole 7, and the support column 2 can be fixed by screwing the bolt 8. The mounting holes 7 on the right-angle plate can correspond to the mounting holes 7 of the first-layer template 5, and bolts 8 are connected in the mounting holes 7, so that the first-layer template 5 is mounted on the base 1.

Referring to fig. 4 and 5, the support column 2 includes: the first end of the outer tube 21 is used for being inserted into the base 1, a socket 23 perpendicular to the length direction of the outer tube 21 is formed in the middle of the outer tube 21, and a plurality of mounting holes 7 are formed in the outer tube 21; and the inner pipe 22 extends into the second end of the outer pipe 21, the inner pipe 22 can be telescopically adjusted in the outer pipe 21 and is relatively fixed, and the top end of the inner pipe 22 can be propped against the top of the canal. In the present embodiment, a mounting hole 7 is formed in each of the upper and lower sides near the insertion opening 23, through which the mounting hole 7 enables the upper form 6 to be mounted on the first form 5 by means of the bolt 8.

Referring to fig. 6 and 7, the first layer formwork 5 and the upper layer formwork 6 on the same side are connected via a connecting piece, and the connecting piece can be joggled to the supporting column 2. Namely, the first layer template 5 and the upper layer template 6 are lapped and attached to the inserting opening 23 arranged in the middle of the outer pipe 21, so that a groove can be formed, and the connecting piece is inserted into the groove, so that the connection between the first layer template 5 and the upper layer template 6 is more stable.

The connecting piece includes: a ruler rod 9 arranged on the first layer template 5 and the upper layer template 6, wherein the ruler rod 9 passes through the socket 23 of the support column 2; the steel plate 10 is characterized in that the light steel plates 10 are uniformly arranged on the ruler rod 9 and arranged along the length direction of the ruler rod 9, each light steel plate 10 is perpendicular to the length direction of the ruler rod 9, and two sides of each light steel plate 10 in the length direction are respectively connected to the upper layer formwork 6 and the first layer formwork 5 through bolts 8. Thereby securing the upper form 6 to the first form 5.

Both ends on the pull rod 4 are provided with external thread portions, the pull rod 4 is used for penetrating the templates on both sides of the pipeline 3, both ends of the pull rod 4 are connected with a limiting part and a nut respectively, and the limiting part and the nut are arranged on both sides of each template respectively. The spacing of template on 4 axial both sides of pull rod can be guaranteed in the cooperation of locating part and nut, and the locating part sets up the inboard at the nut, and during the installation, locating part and nut are installed respectively in the both sides of template, and the locating part can play the supporting role, and the nut plays take-up effect, and further the stability of the template of guaranteeing 3 both sides of pipeline.

In a second aspect, referring to fig. 1 to 8, there is provided a finite space underwater mold sealing method, which applies the finite space underwater mold plate provided in the first aspect, including:

step one, installing a base 1, respectively arranging the bases 1 on two sides of a pipeline 3, so that the bases 1 are distributed along the length direction of the pipeline 3, arranging the bases 1 in areas including but not limited to areas needing protection, and fixing the bases 1 at the bottom of a pipe duct through expansion screws.

In this embodiment, it should be understood that, before the step one, the sludge at the bottom of the pipe canal should be cleaned or excavated to a preset height, and the bottom of the trench should be cleaned, so as to avoid the uneven or more impurities from interfering with the installation of the base 1.

And step two, mounting the support column 2, tenoning the lower end of the support column 2 to the base 1, and fixing the support column 2. The method of fixing the support column 2 includes: firstly, fixing the bottom of a support column 2 on a base 1 through a bolt 8; then the outer tube 21 and the inner tube 22 of the support post 2 are relatively fixed; and finally, the top end of the supporting column 2 is pressed against the top of the pipe duct. Through the installation, the connection between each supporting column 2 and the base 1 is firmer, and a frame for installing the formwork can be provided.

Step three, template installation, namely installing the templates on the base 1 and the support column 2 respectively; the template includes: the first-layer templates 5 are connected to the base 1 and the supporting columns 2; and the upper layer templates 6 are correspondingly arranged on the first layer templates 5, and the first layer templates 5 are connected with the upper layer templates 6 through connecting pieces. Connect first layer template 5 on base 1 and support column 2 respectively earlier to it is fixed through bolt 8, make first layer template 5 installation more firm. The upper template 6 is arranged above the first template 5, and the upper template 6 is connected to the supporting column 2 through a bolt 8 and connected to the first template 5 through a connecting piece to realize stable connection.

And step four, fixing the pipeline 3 and the templates, heightening and fixing the pipeline 3 through the pull rod 4, and tightening and fixing the templates on two sides of the pipeline 3 through the pull rod 4. The pull rod 4 comprises a lower layer pull rod 4 and an upper layer pull rod 4. The method for raising and fixing the pipe 3 by the pull rod 4 is as follows: installing lower-layer pull rods 4 at preset elevations at the bottom of the pipe duct, so that the lower-layer pull rods 4 are uniformly distributed along the length direction of the pipeline 3; then erecting the pipeline 3 on the lower-layer pull rod 4; finally, a plurality of upper-layer pull rods 4 are arranged above the pipeline 3, so that the pipeline 3 is clamped by the upper-layer pull rods 4 and the lower-layer pull rods 4. Through the tight installation of upper tie rod 4 and lower floor's pull rod 4 clamp to pipeline 3, effectively avoided rising because the water level that multiple reasons such as rise tide lead to pipeline 3 come-up the latter problem such as sink of initiation. And the formworks on both sides of the pipeline 3 can be tightened by the pull rod 4, thereby enhancing the structural strength between the formworks on both sides of the pipeline 3.

In the embodiment, the mounting holes 7 formed in the first-layer formwork 5 and the upper-layer formwork 6 can be mounted in the mounting holes 7 by using PVC caps when not in use. In addition, the first-layer template 5 and the upper-layer template 6 (the first-layer template 5 and the upper-layer template 6 are collectively called as templates) are structural members made of polyethylene, and are characterized in that: light weight, durability, and robustness, and thus convenient transportation in a closed space.

The application provides a finite space is template and die sealing method under water, has realized the envelope to pipeline 3 through base 1 and template, can avoid effectively washing away pipeline 3 to raise pipeline 3 position through pull rod 4, can effectual reduction pipeline 3 and the direct contact of water. Can also carry out spacing and fixed through pull rod 4 to pipeline 3, can prevent that pipeline 3 from floating and sinking. Each template, the base 1 and the support column 2 can be repeatedly used, and construction cost can be effectively reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims

1. A confined space underwater template comprising:

2. The limited space underwater template of claim 1, wherein the base includes:

3. The confined space underwater template of claim 1 wherein the support posts comprise:

4. The confined space underwater template of claim 1 wherein the first level template and the upper level template on the same side are connected via connectors and the connectors can be joggled to the support posts.

5. The confined space underwater template of claim 4 wherein the connector comprises:

6. The underwater formwork in limited space according to claim 1, wherein the pull rod is provided with external thread portions at two ends, the pull rod is used for penetrating the formworks at two sides of the pipeline, the two ends of the pull rod are respectively connected with a limiting member and a nut, and the limiting member and the nut are respectively arranged at two sides of each formwork.

7. A finite space underwater mold sealing method is characterized by comprising the following steps:

8. The confined space underwater mold sealing method of claim 7 wherein in step two, the method of securing the support posts comprises:

fixing the bottom of the support column on the base through a bolt;

relatively fixing the outer pipe and the inner pipe of the support pillar;

9. The confined space underwater mold sealing method of claim 7 wherein the template comprises:

the first-layer templates are connected to the base and the supporting columns;

10. The confined space underwater mold sealing method of claim 7 wherein said tie bars comprise a lower tie bar and an upper tie bar;

erecting the pipeline on the lower layer pull rod;