CN115288175A

CN115288175A - Gallery pouring method in steel shell concrete immersed tube section

Info

Publication number: CN115288175A
Application number: CN202211012384.XA
Authority: CN
Inventors: 张文森; 王晓东; 杨洋; 邓懋新; 吴宇恒; 安凌志; 林伟才; 邓军; 邓世民; 薛力源; 陈远
Original assignee: CCCC Fourth Harbor Engineering Co Ltd; No 2 Engineering Co of CCCC Fourth Harbor Engineering Co Ltd
Current assignee: CCCC Fourth Harbor Engineering Co Ltd; No 2 Engineering Co of CCCC Fourth Harbor Engineering Co Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-11-04
Anticipated expiration: 2042-08-23
Also published as: CN115288175B

Abstract

The invention relates to the field of submarine immersed tubes, in particular to a method for pouring a gallery in a steel shell concrete immersed tube section, which performs skip pouring along the longitudinal two ends of the gallery towards the middle through two pouring machines and comprises the following steps: s1, separating a connecting part between a pouring machine and a pump pipe after two bin lattices are poured; s2, moving the pouring machine to the next pouring station; s3, adding a pump pipe segment between the pouring machine and the pump pipe; s4, after the two pouring machines meet and complete the longitudinal middle bin lattice pouring of the middle gallery, cleaning the pump pipe, separating the connecting part between the pouring machines and the pump pipe, and withdrawing the two pouring machines to corresponding outlet positions respectively; s5, disassembling the pump pipe to form a plurality of pump pipe sections; and S6, the two pouring machines jump the bins again for pouring, and the steps S1-S5 are repeated to finish pouring of all bins of the bottom plate of the middle gallery and recycle all pump pipe segments. The pouring mode of connecting pipes and moving the machine is formed, concrete waste generated by moving the machine and the times of cleaning the pump pipes can be reduced, the construction cost is saved, and the construction period is shortened.

Description

Gallery pouring method in steel shell concrete immersed tube section

Technical Field

The invention relates to the field of submarine immersed pipes, in particular to a gallery pouring method in a steel shell concrete immersed pipe joint.

Background

The steel-shell concrete immersed tube adopts pours self-compaction concrete shaping in steel-shell storehouse check, current steel-shell concrete immersed tube generally has left piping lane, right piping lane and is located the well piping lane between the left and right piping lane, well piping lane is also known as well corridor, its width is littleer about than the piping lane, the laying of auxiliary facilities such as mainly used pipe, line is walked, well corridor bottom plate vertically sets up two rows of storehouse check, every row includes a plurality of independent storehouse check, every storehouse check corresponds and sets up pours the mouth.

The existing immersed tube pipe section bottom plate bin lattice pouring is uniformly carried out in a mode that every row of bin lattices jump a bin and adjacent rows of bin lattices are poured in a staggered mode, in the pouring process, a towing pump is located outside the longitudinal end portion of an immersed tube pipe section and used for receiving concrete conveyed by a concrete tank truck, the towing pump is communicated with a pouring machine through a pump pipe, a gallery is located in the middle of the longitudinal portion of the gallery in the pouring machine in the first pouring process, the two ends of the gallery are poured behind the two ends of the gallery in the length direction, in the pouring process, the pouring machine needs to be moved once every time two bin lattices are poured, as shown in figure 7, the pouring machine moves towards the two ends from the middle of the longitudinal middle of the gallery, at the moment, the pump pipe between the towing pump and the pouring machine is filled with concrete, when the machine is moved, partial pump pipes need to be removed, the removed pump pipe sections are recycling structural members, and in order to avoid pipe blockage caused by time difference when the removed pump pipe sections are used next time, the removed pump pipe sections need to be manually lifted to be cleaned, so that the pump pipe sections are cleaned, and the construction efficiency is low and a lot of concrete is wasted.

Therefore, a technical scheme is urgently needed at present to solve the technical problems that in the existing immersed tube pipe section, a gallery is poured and is detached and moved, the number of times of cleaning a pump pipe is large, the construction efficiency is low, and concrete waste is caused.

Disclosure of Invention

The invention aims to: the method for pouring the gallery in the steel shell concrete immersed tube section is provided aiming at the technical problems that the gallery pouring in the existing immersed tube section adopts a tube dismantling and moving machine, the times of cleaning a pump tube are more, the construction efficiency is low and concrete waste is caused.

In order to achieve the purpose, the invention adopts the technical scheme that:

a gallery pouring method in a steel shell concrete immersed tube pipe section carries out skip pouring along the longitudinal two ends of a gallery towards the middle through two pouring machines and comprises the following steps: s1, separating a connecting part between a pouring machine and a pump pipe after two bin lattices are poured; s2, moving the pouring machine to the next pouring station; s3, adding a pump pipe segment between the pouring machine and the pump pipe; s4, after the two pouring machines meet and complete pouring of the longitudinal middle bin grid of the middle gallery, cleaning the pump pipe, separating the connecting part between the pouring machines and the pump pipe, and moving the two pouring machines back to corresponding outlet positions respectively; s5, disassembling the pump pipe to form a plurality of pump pipe sections; and S6, performing skip pouring by the two pouring machines along the longitudinal two ends of the middle gallery towards the middle again, and circulating S1-S5 to finish pouring of all bin lattices of the bottom plate of the middle gallery and recycle of all pump pipe segments.

According to the gallery pouring method in the steel shell concrete immersed tube section, the two pouring machines move oppositely to carry out skip bin pouring, the pouring machines separate the connecting parts between the pouring machines and the pump pipes when the stations are switched, the pump pipe sections are increased at a new station to form a pouring mode of taking over and moving the machines, concrete waste generated by moving the machines and the times of cleaning the pump pipes can be reduced, the construction cost is saved, the economic benefit is improved, the number of the pouring bin grids of the two pouring machines can be adjusted in real time according to actual conditions, the overall construction period of a gallery in the steel shell concrete immersed tube section is shortened, and the construction progress is accelerated.

As a preferable scheme of the invention, the pouring machine station is positioned at the intersection point of the bin lattices in the adjacent rows for pouring, and the pouring of the two bin lattices positioned at the diagonal positions is completed at each pouring station. The pouring machine finishes pouring of two bin lattices in opposite angle positions at one station, so that the stress of the whole immersed tube joint is balanced, and the deformation is reduced.

As a preferable scheme of the invention, two casting machines are cast in mirror images at the casting station. The gallery is longitudinally and symmetrically poured, the integral stress of the immersed tube pipe joint is further balanced, the deformation is reduced, and meanwhile, when two pouring machines meet, the skip bin pouring can be continuously kept.

In a preferred embodiment of the present invention, in S1, the connection portion between the casting machine and the pump pipe includes a detachable connection through a clamp structure. The pump pipe segment can be disassembled and connected quickly, the machine moving time is shortened, and the machine moving efficiency is improved.

In a preferred embodiment of the present invention, a connection portion is disposed at an end of the pump tube segment, and the clamp structure is provided with a sealing ring engaged with the connection portion. So that the connection between the pump pipe sections is tight.

In a preferable embodiment of the present invention, in S3, the length of the pump pipe segment is equal to the distance between the adjacent bin pouring openings. The length of the pump pipe sections is adapted to the length of the moving machine, and the number of the pump pipe sections is reduced.

In a preferred embodiment of the present invention, in S3, the pump tube segment is pre-wetted by immersion or inner wall sprinkling. The friction between the concrete and the inner wall of the pump pipe can be reduced, the pipe blocking probability of a newly-connected pump pipe section is reduced, and smooth pouring of all stations is guaranteed.

In S4, a sponge ball is placed into an outlet-end pipe opening of the pouring machine, the sponge ball is pushed to move by introducing gas, concrete in the pump pipe is pushed to move towards the side of the trailer pump until the sponge ball is output from the trailer pump, and the inner wall of the pump pipe is cleaned. The pump pipe is disassembled after being cleaned integrally, and the disassembling process is favorably and smoothly carried out.

As a preferable scheme of the present invention, in S5, the disassembling includes in-situ disassembling, where in the in-situ disassembling is to separate a connection portion between adjacent pump pipe segments without moving the pump pipe, place the pump pipe segment in a disassembly position in situ, and wait for reconnection with a casting machine. The handling of pump line segment section is reduced, shortens and moves quick-witted whole time.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. by forming a pouring mode of connecting pipes and moving the machine, concrete waste generated by moving the machine and the times of cleaning the pump pipes can be reduced, the construction cost is saved, and the economic benefit is improved;

2. the two pouring machines pour from two ends to the middle, the number of the respective pouring bin lattices of the two pouring machines can be adjusted in real time according to actual conditions, the overall construction period of the middle gallery is shortened, and the construction progress is accelerated;

3. the newly-connected pump pipe segment is wetted in advance, so that friction between concrete and the inner wall of the pump pipe can be reduced, the pipe blocking probability of the newly-connected pump pipe segment is reduced, and smooth pouring of all stations is guaranteed.

Drawings

FIG. 1 is a first schematic plan view of a gallery-cast warehouse of the present embodiment;

FIG. 2 is a schematic plan view of a second gallery compartment for gallery pouring in the present embodiment;

fig. 3 is a schematic plan view of a third cabin poured by a gallery in the embodiment;

fig. 4 is a schematic plan view of a gallery pouring bin in the present embodiment;

FIG. 5 is a schematic structural diagram of the storage compartment and the pump tube in the present embodiment;

FIG. 6 is an enlarged view of a portion A of FIG. 5;

FIG. 7 is a schematic view of a prior art casting machine moving from the longitudinal middle of the center gallery to both ends;

fig. 8 is a schematic view of the present invention casting machine moving from the longitudinal ends of the center gallery to the middle.

Icon:

1-middle gallery, 11-bin lattice, 12-pouring opening, 2-pouring station, 3-pump pipe, 31-pump pipe segment, 32-connecting part, 4-hoop structure and 5-pouring machine.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

In the method for pouring the gallery in the steel shell concrete immersed tube section, as shown in fig. 1-4, a bottom plate of the gallery 1 is in a checkerboard form to form two rows of bins 11, and a pouring machine 5 stands at the intersection point of the bins 11 in the adjacent rows and finishes pouring of the two bins 11 in the diagonal position at each pouring station 2.

As shown in fig. 1-4 and 8, in the method for pouring the gallery in the steel-shell concrete immersed tube section according to the embodiment, two pouring machines 5 are used for performing skip pouring along the longitudinal two ends of the gallery 1 toward the middle, and the two pouring machines 5 are poured in a mirror image manner at the pouring station 2, so that the immersed tube section is subjected to balanced stress integrally and deformation is reduced.

Further, the method for pouring the gallery in the steel shell concrete immersed tube section comprises the following steps: pouring is started from the longitudinal two ends of the middle gallery 1, and when the pouring of the pouring machine 5 is finished, two bin lattices 11 are separated from the connecting part between the pipe orifice at the inlet end of the pouring machine 5 and the pump pipe 3; moving the casting machine 5 into the middle gallery 1 to a next casting station 2; adding a pump pipe segment 31 between the pouring machine 5 and the pump pipe 3; after the two casting machines 5 meet and complete casting of the middle gallery 1 longitudinal middle bin 11, the pump pipe 4 is cleaned, the connecting part between the inlet end pipe opening of the casting machine and the pump pipe 3 is separated, the two casting machines 5 move back to the corresponding outlet positions respectively, the pump pipe 3 is disassembled to form a plurality of pump pipe sections 31, the two casting machines 5 perform skip bin casting of the rest bin from the two longitudinal ends of the middle gallery 1 to the middle again until meeting again, casting of all the bins 11 of the middle gallery 1 bottom plate is completed, and after cleaning, separation and disassembly of the pump pipe 3, the pump pipe sections 31 are recovered, so that a complete casting mode of symmetrical casting and taking over of the middle gallery of the steel shell concrete immersed pipe section is formed.

Specifically, as shown in fig. 1, two casting machines 5 start casting from two longitudinal ends of the middle gallery 1 until the two casting machines 5 meet in the middle gallery 1 for the first time as shown in fig. 2, at this time, if a middle single cast-free bin lattice 11 as shown in fig. 2 appears, according to actual conditions, any one casting machine 5 is adopted to continuously move forward one station to complete the casting of the single cast-free bin lattice 11; and then, the two casting machines 5 return to the outlet positions at the two ends of the middle corridor 1 respectively, as shown in fig. 3, the two casting machines 5 continue to perform casting on the rest of the bins 11 until the two casting machines meet each other again as shown in fig. 4, and the casting of all the bins 11 is completed in the same manner.

Specifically, the connection position between the casting machine 5 and the pump pipe 3 is detachably connected through the hoop structure 4, so that the pump pipe segment 31 is quickly disassembled and connected, the machine moving time is shortened, the machine moving efficiency is improved, as shown in fig. 6, the end part of the pump pipe segment 31 is provided with the connecting part 32 with the outer annular groove, the inner ring of the hoop structure 4 is provided with the sealing ring matched with the connecting part 32, and when the quick pipe connecting device is used, the quick tight connection or quick separation of the hoop structure 4 and the pump pipe segment 31 is realized through adjusting the fastening bolt on the hoop structure 4, the pipe connecting time is shortened, and the machine moving time is shortened.

It should be noted that, in the process of moving the pipe joint, in this embodiment, by separating the connection between the bottom elbow (i.e. the inlet end pipe orifice) of the pouring machine 5 and the pump pipe 3, one end of the newly-inserted pump pipe segment 31 is connected to the pump pipe 3, and the other end of the newly-inserted pump pipe segment is connected to the bottom elbow of the pouring machine 5, the air segment inside the newly-inserted pump pipe segment 31 is close to the pouring machine 5, is close to the pouring opening 12 of the bin lattice 11, and is located in front of the concrete in the pump pipe 3, and the air segment can be discharged from the bin lattice 11 in advance by adjusting the pumping speed of the concrete, so as to avoid the air segment from affecting the pouring quality of the bin lattice 11.

Further, in order to reduce the friction between the concrete and the inner wall of the pump pipe 3 and reduce the pipe blocking probability of the newly-connected pump pipe segment 31 and ensure the smooth pouring of each station, the inner wall of the newly-connected pump pipe segment 31 is sprayed with water in advance for wetting.

According to the gallery pouring method in the steel shell concrete immersed tube section, two pouring machines 5 move oppositely to carry out skip bin pouring, the pouring machines 5 separate the connecting parts between the inlet end pipe orifices of the pouring machines 5 and the pump tubes 3 when the pouring stations 2 are switched, the pump tube sections 31 are increased at the new pouring stations 2 to form a pouring mode of taking over and moving the pouring machines, no concrete is left in the pump tube sections 31 when the pouring machines 5 are newly connected, concrete waste generated by moving the machines can be reduced, meanwhile, the pump tubes 3 are integrally cleaned after pouring is completed, compared with the prior art that the pump tube sections 31 need to be lifted and cleaned once when the pouring machines 5 move one station, the cleaning frequency is changed from multiple times to one time, the cleaning frequency is obviously reduced, the construction efficiency is improved, the construction cost is saved, the economic benefit is improved, the number of the pouring bin grids 11 of the two pouring machines 5 can be adjusted in real time according to actual conditions, the integral construction period of the gallery is shortened, and the construction progress is accelerated.

Preferably, 3 washing of pump line are for before 3 disassembles of pump line, put into the sponge ball at 5 exit end mouths of pipe of pouring machine, promote the sponge ball through leading-in gas and remove, promote concrete in 3 interior pump lines and to draging the pump side and remove, until the sponge ball is exported from the draging the pump, realize that 3 inner walls of pump line wash.

Preferably, before meeting for the second time after two casting machines 5 meet for the first time, pump line 3 is disassembled including the normal position is disassembled, the normal position is disassembled for under the unmovable pump line circumstances, separates the position of connection between the adjacent pump line segment 31, puts pump line segment 31 normal position in the position of disassembling, waits for and pours 5 reconnection, when making two casting machines 5 jump the storehouse for the second time and pour, still reduced the step of pump line 3 transport for the first time jumps the storehouse and pours, whole construction time is shorter, improves the whole efficiency of construction of immersed tube coupling.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. The method for pouring the gallery in the steel shell concrete immersed tube pipe joint is characterized in that two pouring machines (5) are used for performing skip pouring towards the middle along the longitudinal two ends of the gallery (1), and the method comprises the following steps:

s1, separating a connecting part between a pouring machine (5) and a pump pipe (3) when two bin lattices (11) are poured;

s2, moving the pouring machine (5) to the next pouring station (2);

s3, adding a pump pipe segment (31) between the pouring machine (5) and the pump pipe (3);

s4, after the two pouring machines (5) meet and pouring of the longitudinal middle bin grid (11) of the middle gallery (1) is completed, the pump pipe (3) is cleaned, the connecting part between the pouring machines (5) and the pump pipe (3) is separated, and the two pouring machines (5) are respectively withdrawn to corresponding outlet positions;

s5, disassembling the pump pipe (3) to form a plurality of pump pipe sections (31);

and S6, performing skip pouring by the two pouring machines (5) towards the middle along the longitudinal two ends of the middle gallery (1) again, and circulating S1-S5 to finish pouring of all bin lattices (11) of the bottom plate of the middle gallery (1) and recover all pump pipe sections (31).

2. A method of corridor casting in a steel shell concrete immersed tube section according to claim 1, characterised in that the casting machine (5) is located at the intersection of the bin grids (11) of adjacent rows for casting, and the casting of two bin grids (11) located at diagonal positions is completed at each casting station (2).

3. A method of corridor casting in a steel shell concrete caisson according to claim 1, characterised in that two casting machines (5) are cast in mirror image at the casting station.

4. A method of galley casting in a steel shell concrete caisson according to claim 1, characterised in that in S1 the connection between the casting machine (5) and the pump pipe (3) comprises a detachable connection by means of a clip structure (4).

5. A method of corridor casting in a steel shell concrete sinking pipe section according to claim 4, characterised in that the pump pipe section (31) is provided with a connection portion (32) at its end, and the clamp structure (4) is provided with a sealing ring cooperating with the connection portion (32).

6. A method of gallery pouring in a steel shell concrete sinking pipe section according to claim 1, characterised in that in S3 the length of the pump pipe section (31) is equal to the distance between the pouring openings (12) of the adjacent cells (11).

7. The method for pouring the gallery in the steel shell concrete immersed tube section according to claim 1, wherein in S3, the pump tube section (31) is pre-wetted by soaking water or spraying water on the inner wall.

8. The gallery pouring method in the pipe section of the steel shell concrete immersed pipe according to the claim 1 is characterized in that in S4, the cleaning comprises the steps of placing a sponge ball in a pipe opening at the outlet end of the pouring machine (5), pushing the sponge ball to move by introducing gas, pushing the concrete in the pump pipe (3) to move towards the side of the trailer pump until the sponge ball is output from the trailer pump, and cleaning the inner wall of the pump pipe (3).

9. The method for pouring the gallery in the steel shell concrete immersed tube section as claimed in claim 1, wherein in S5, the disassembling comprises in-situ disassembling, wherein the in-situ disassembling is to separate the connecting parts between the adjacent pump tube sections (31) without moving the pump tube (3), and the pump tube sections (31) are placed in situ in the disassembling position to wait for being connected with the pouring machine (5) again.