CN1125935C

CN1125935C - Technology for installing great-diameter prestressed reinforced concrete pipe

Info

Publication number: CN1125935C
Application number: CN 00111166
Authority: CN
Inventors: 刘旭武
Original assignee: TAIAN-CITY RUNNING WATER CO
Current assignee: TAIAN-CITY RUNNING WATER CO
Priority date: 2000-06-29
Filing date: 2000-06-29
Publication date: 2003-10-29
Anticipated expiration: 2020-06-29
Also published as: CN1331395A

Abstract

The present invention relates to a large caliber steel bar concrete pipe installing technology. Through a guide rope (chain), a steel wire rope sleeve and a crane in a traditional installing method, the problem of all the work for installing a concrete pipe is solved, and by directly using the force of the crane, heavy labor of artificial hand pull, station movement, etc., is omitted. A lot of bulky equipment of a wring grinder, an inverted chain, supporting iron, a back, a pin bolt, a hoisting jack, a chain hoist, etc., in the traditional installing method is also omitted. The present invention has the advantage of labor saving, convenience, less investment, safety, reliability, obvious competitive advantage, very obvious economic benefit and very high popularization value, work efficiency increases about ten times, and labour intensity is largely lightened.

Description

Technology for installing great-diameter prestressed reinforced concrete pipe

One, technical field

The present invention relates to the mounting process of a kind of diameter prestressed concrete reinforced pipe of particularly in the long-distance large-caliber conduit pipe, using in the water supply project.

Two, background technique

Prestressed reinforced concrete pipe is impervious with it, fracture resistance good, and anti-corruption, antidetonation, advantage such as sturdy and durable and cheap can replace metallic steel tubing fully, so be widely used in water supply project.But its shortcoming is from great, and particularly outstanding is that inconvenience is installed.The required machinery of traditional mounting process is many, operating difficulties, labor intensity is big, work efficiency is low, and this has caused certain difficulty for applying of prestressed reinforced concrete pipe.

Three, summary of the invention

Purpose of the present invention just provide a kind of mechanization degree height, simple to operate, equipment needed thereby is few, save labor, reduce labor intensity, diameter prestressed concrete reinforced pipe mounting process that work efficiency is high.

The present invention is achieved in that this installation method utilized concrete from great characteristic, has just solved concrete pipe by the hoist in the conventional mounting method, conductor rope (chain), steel wire loop required whole work are installed.

Four, description of drawings

Be described in detail the present invention below in conjunction with accompanying drawing and embodiment:

Fig. 1 is conductor rope of the present invention (chain) schematic representation;

Fig. 2 has conductor rope (chain) schematic representation of coaster for the present invention;

Fig. 3 is a steel wire loop schematic representation of the present invention;

Fig. 4 is the use position schematic representation of steel wire loop of the present invention;

Fig. 5 is a scheme of installation of the present invention;

Fig. 6, Fig. 7 are schematic diagram of the present invention.

Five, embodiment

The technology for installing great-diameter prestressed reinforced concrete pipe step is:

1. the making of conductor rope

Material as conductor rope is a wire rope, the sectional area of wire rope can be selected according to the deadweight of prestressed concrete pipe, the length of conductor rope is advisable with 21 meters, intercepts 42 meters wire rope, is folded in half into 21 meters long duplex types then, prick 1 with wire rope again the rope card become shown in Figure 1 five sections, these five sections five looped ropes that are equivalent to connect mutually, suit a pair of wheel coaster 2 on first segment becomes shown in Figure 2 again, coaster 2 can move forward and backward on first section, and the ring end of conductor rope is the O end;

2. the making of steel wire loop

Answer the single-unit of root a tree name pipe heavy and decide as the wire rope sectional area of rope sling, the latch closure A at wire rope two ends, latch closure B must insert system with special tool, as shown in Figure 3, the rope sling length of moulding is with four times tube outer diameter be advisable (D is the prestressed pipe external diameter among Fig. 3), each operation group should be equipped with four to five rope slings, in addition, be equipped with a U-shaped shackle again according to the prestressed concrete pipe deadweight;

3. install

Be bundled in the center of gravity position of pipe with the steel wire loop of above making, the suit method of rope sling is shown in figure four, the A ring that is about to rope sling passes in the B ring pipe is bundled, at this moment hanging the pipe that has bundled with crane hook is put in the groove, put underwater pipeline stabilizing, this article one rope sling is just stayed on the pipe, use again and lift second pipe joint with method and transfer in the groove, suppose it is that forward is installed, the socket that is about to pipe initiatively inserts in the bellmouth of pipe, otherwise method also together, after second pipe joint packages cushion rubber, good mouth is put underwater pipeline stabilizing, be attached in first section conductor rope of conductor rope with the A ring of U type shackle 5 first segment pipe rope sling, the A ring of the sub-rope sling of second pipe joint is hung on the hook of conductor rope upper pulley, with the sling O end of conductor rope 3 of the suspension hook of hoist 4, shown in figure five, commander's hoist 4 slowly lifts by crane, and till second pipe joint is in place, puts the rope sling that can remove second pipe joint behind the underwater pipeline stabilizing, so far, second pipe joint installs, then, the rope sling of first segment pipe is connected in U type shackle 5 in second section of conductor rope, continue, finish the installation of concrete pipe.

Technology for installing great-diameter prestressed reinforced concrete pipe of the present invention can be in place three-joint pipe with above-mentioned method, and the like six pipe joint can be installed continuously.

Technology for installing great-diameter prestressed reinforced concrete pipe of the present invention is being installed the 4th pipe joint period of the day from 11 p.m. to 1 a.m, the rope sling of binding pipe should be stayed on the pipe, is equivalent to the effect of above-mentioned first segment pipe, and the rope sling of former first segment pipe can be extractd.

What prestressed reinforced concrete pipe adopted is round rubber circle interface, when socket when bellmouth inserts, rubber ring is compressed to a certain degree in the process of rolling, two power of this process need, shown in the figure six, the size of the power P that makes progress equals the gravity G of pipe, and plays the effect of counterpart location, horizontal force F then makes pipe be in place, to overcome the resistance of rubber ring in compression process.From top analysis as can be seen, being in place of prestressed reinforced concrete pipe, these two power are necessary conditions.Traditional installation method produces with regard to being based on this, and a power P who promptly utilizes hoist to produce utilizes jack or chain block to produce a power F again, and power P makes the pipe location, and power F is in place pipe.

Since two power of this in installation process are necessary conditions, we can utilize certain instrument to decompose according to the character of power so, produce power P and horizontal force F upwards, shown in figure seven.On the pipe that will install, fix a coaster 6, conductor rope is walked around coaster and is fixed on the pipe that the front has been in place, utilize the hoist the other end of slinging, then because the effect of coaster has changed the direction of power, make to be mounted pipe and to have produced a power W, W can be decomposed into two power again, the power P that makes progress and the power F of level, because the deadweight of large diameter concrete pipe is very big, the F that makes a concerted effort of generation is enough to pipe is in place.The present invention utilizes this principle to produce.

The present invention adopts this principle, save the conventional mounting method and needed hoist, lead chain, coaster, top iron, back, pin, steel wire loop, jack, the cumbersome apparatus that chain block etc. are a large amount of, the present invention has only utilized the hoist in the conventional mounting method, conductor rope (chain), steel wire loop has just solved whole installation questions, and directly utilized the strength of hoist, both saved manually and pulled, the manual labor that station removing etc. are heavy, also saved strand mill in the conventional mounting method, jack, top iron, back, pin, jack, a large amount of heavy equipment such as chain block, operate and save labor, very convenient, overcome the complex operation in the conventional mounting technology, the equipment heaviness, labor intensity is big, shortcomings such as work efficiency is low, calculate through the scene, new mounting process is compared with the conventional mounting method, improve nearly ten times of work efficiency, and working strength of workers reduces greatly, little investment, safe and reliable, have tangible competitive advantage, its economic benefit is very remarkable.

Claims

1, a kind of technology for installing great-diameter prestressed reinforced concrete pipe is characterized in that the process Installation step is:

1. the making of conductor rope

Material as conductor rope is a wire rope, the sectional area of wire rope can be selected according to the deadweight of prestressed concrete pipe, the length of conductor rope is advisable with 21 meters, intercept 42 meters wire rope, be folded in half into 21 meters long duplex types then, prick head (1) with wire rope again the rope card is become 5 sections, these 5 sections 5 looped ropes that are equivalent to connect mutually, the suit a pair of is taken turns coaster (2) on first segment again, and coaster (2) can move forward and backward on first section, and the ring end of conductor rope is the O end;

2. the making of steel wire loop

Answer the single-unit of root a tree name pipe heavy and decide as the wire rope sectional area of rope sling, the latch closure A at wire rope two ends, latch closure B must insert system with special tool, the rope sling length of moulding is advisable with 4 times tube outer diameter, each operation group should be equipped with 4-5 bar rope sling, in addition, be equipped with a U-shaped shackle again according to the prestressed concrete pipe deadweight;

3. install

Be bundled in the center of gravity position of pipe with the steel wire loop of above making, the A ring that is about to rope sling passes in the B ring, pipe is bundled, at this moment hanging the pipe that has bundled with crane hook is put in the groove, put underwater pipeline stabilizing, this article one rope sling is just stayed on the pipe, use again and lift second pipe joint with method and transfer in the groove, suppose it is that forward is installed, the socket that is about to pipe initiatively inserts in the bellmouth of pipe, otherwise method also together, after second pipe joint packages cushion rubber, good mouth is put underwater pipeline stabilizing, be attached in first section conductor rope of conductor rope with the A ring of U type shackle (5) first segment pipe rope sling, the A ring of the sub-rope sling of second pipe joint is hung on the hook of conductor rope upper pulley, with the sling O end of conductor rope (3) of the suspension hook of hoist (4), commander's hoist (4) slowly lifts by crane, till second pipe joint is in place, put the rope sling that can remove second pipe joint behind the underwater pipeline stabilizing, so far, second pipe joint installs, then, the rope sling of first segment pipe is connected in U type shackle (5) in second section of conductor rope, continues, finish the installation of concrete pipe.

2, according to the said technology for installing great-diameter prestressed reinforced concrete pipe of claim 1, it is characterized in that three-joint pipe to be in place with above-mentioned method, and the like six pipe joint can be installed continuously.

3, according to the said technology for installing great-diameter prestressed reinforced concrete pipe of claim 2, it is characterized in that the 4th pipe joint period of the day from 11 p.m. to 1 a.m is being installed, the rope sling of binding pipe should be stayed on the pipe, be equivalent to the effect of first segment pipe, the rope sling of former first segment pipe can be extractd.