阅读说明：本技术 一种顶管内安装内套钢管的施工工艺 (Construction process for installing inner sleeve steel pipe in jacking pipe ) 是由 肖敏 *** 罗可 朱少华 吴梓鸿 于 2020-07-09 设计创作，主要内容包括：本发明公开了一种顶管内安装内套钢管的施工工艺,包括以下步骤：施工完成顶管工作井、混凝土顶管及接受平台；将升降运输车吊装至管节接受平台上；将第一管节吊装至管节接受平台上；通过升降运输车将第一管节运输至混凝土顶管内,将第一管节安装固定,升降运输车从第一管节内退出；将下一管节吊装至管节接受平台上；通过升降运输车将管节运输至与上一管节拼接并安装固定；重复以上步骤直至所有管节安装固定到位。实现狭小空间内安装管节,减少工程器械类费用,可精确调整管节安装高度和坡度,保证管道施工质量,减少待安装管节与顶管相互作用,避免顶管和管节受损,运输车循环工作,可由两台运输车两头同时工作,提高安装效率,大大缩短工期。(The invention discloses a construction process for installing an inner sleeve steel pipe in a jacking pipe, which comprises the following steps: completing a pipe jacking working well, a concrete pipe jacking and a receiving platform; hoisting the lifting transport vehicle to a pipe joint receiving platform; hoisting the first pipe joint to a pipe joint receiving platform; transporting the first pipe section into the concrete top pipe through a lifting transport vehicle, installing and fixing the first pipe section, and withdrawing the lifting transport vehicle from the first pipe section; hoisting the next pipe joint to a pipe joint receiving platform; conveying the pipe joint to be spliced with the previous pipe joint and installing and fixing the pipe joint by a lifting transport vehicle; and repeating the steps until all the pipe joints are installed and fixed in place. The pipe joint is installed in the narrow space, engineering equipment cost is reduced, the installation height and the gradient of the pipe joint can be accurately adjusted, the pipeline construction quality is guaranteed, the interaction between the pipe joint to be installed and the pipe jacking is reduced, the pipe jacking and the pipe joint damage are avoided, the transport vehicles work circularly, two ends of the two transport vehicles can work simultaneously, the installation efficiency is improved, and the construction period is greatly shortened.)

1. A construction process for installing an inner sleeve steel pipe in a jacking pipe is characterized by comprising the following steps:

1) the construction is completed with a pipe-jacking working well and a concrete pipe jacking, and the concrete pipe jacking is horizontally arranged at one side of the pipe-jacking working well and communicated with the pipe-jacking working well;

2) constructing a pipe joint receiving platform in the pipe-jacking working well, wherein the pipe joint receiving platform is arranged at the bottom of the pipe-jacking working well, and the height of the top of the pipe joint receiving platform is consistent with that of the bottom of the concrete pipe jacking;

3) hoisting the lifting transport vehicle to a pipe joint receiving platform from the outside of the pipe jacking working well, and moving the lifting transport vehicle into the concrete pipe jacking;

4) hoisting the first pipe joint from the outside of the pipe jacking working well to a pipe joint receiving platform;

5) penetrating the lifting transport vehicle into the first pipe joint, and supporting the first pipe joint;

6) transporting the first pipe section into the concrete top pipe through a lifting transport vehicle, installing and fixing the first pipe section, and withdrawing the lifting transport vehicle from the first pipe section;

7) hoisting the next pipe joint from the outside of the pipe jacking working well to a pipe joint receiving platform;

8) penetrating the lifting transport vehicle into the pipe joints and supporting the pipe joints;

9) transporting the pipe joint into a concrete jacking pipe through a lifting transport vehicle, splicing the pipe joint with the previous pipe joint, installing and fixing the pipe joint, and withdrawing the lifting transport vehicle from the pipe joint;

10) and repeating the steps 7) -9) until all the pipe joints are installed and fixed in place in the concrete top pipe.

2. The construction process for installing the inner sleeve steel pipe in the pipe jacking according to claim 1, wherein the lifting transport vehicle comprises a cross beam and three vertical rods, the three vertical rods are respectively a first vertical rod, a second vertical rod and a third vertical rod, the first vertical rod, the second vertical rod and the third vertical rod are sequentially arranged at the bottom of the cross beam along the length direction, the distance between the second vertical rod and the third vertical rod is greater than the length of the pipe joint, height regulators are arranged on the first vertical rod, the second vertical rod and the third vertical rod, and sliding plate trolleys are arranged at the bottoms of the first vertical rod, the second vertical rod and the third vertical rod.

3. The construction process for installing the inner sleeve steel pipe in the jacking pipe as claimed in claim 2, wherein in the steps 5) and 8), after the lifting transport vehicle penetrates into the pipe joints, the cross beam is lifted through the height regulators of the second vertical rod and the third vertical rod to support the first pipe joint.

4. The construction process for installing an inner sleeve steel pipe in a jacking pipe as claimed in claim 2, wherein the height adjuster comprises a sleeve, the upright comprises an upper upright and a lower upright, the upper end of the upper upright is connected with the beam, the lower end of the upper upright is connected with the sleeve through a thread, the upper end of the lower upright is connected with the sleeve, and the lower end of the lower upright is connected with the trolley.

5. The construction process for installing the inner sleeve steel pipe in the jacking pipe as claimed in claim 2, wherein the cross beam is provided with a rubber pad.

6. The construction process for installing the inner sleeve steel pipe in the pipe-jacking according to claim 2, wherein in the step 9), the first vertical rod is adjusted to a corresponding length in the process of splicing the pipe joint with the previous pipe joint, the first vertical rod enters the previous pipe joint to form a support, the second vertical rod is shortened by adjusting the height, the pipe joint is spliced with the previous pipe joint, and then the pipe joint is installed and fixed.

7. The construction process for installing the inner sleeve steel pipe in the pipe jacking according to claim 1, wherein in the step 6) and the step 9), the installation and fixation process of the pipe joint is to arrange buttresses at two ends of the bottom of the pipe joint, and to arrange grouting concrete between the two buttresses and the bottom of the pipe joint.

8. The construction process for installing the inner sleeve steel pipe in the jacking pipe as claimed in claim 1, wherein the front end and the rear end of the lifting transport vehicle are both connected with dragging steel ropes, and the lifting transport vehicle moves back and forth in the concrete jacking pipe by dragging the dragging steel ropes.

Technical Field

The invention relates to the technical field of pipeline construction, in particular to a construction process for installing an inner sleeve steel pipe in a jacking pipe.

Background

With the rapid development of the national urban infrastructure construction, the density of traffic networks and pipe networks such as urban roads, rail traffic, expressways, railways and the like is increased, and the crossing condition of the newly-built drainage pipe networks and the road networks is increased. When the existing facility safety and the surrounding environment are not influenced in the surrounding field, the newly-built drainage pipeline is generally constructed in an open cut mode. Along with the release of the excavation soil pressure of the foundation pit, when the supporting measures are not proper, the deformation and the displacement of a road structure are easily caused, and when the support passes through busy municipal roads, rail traffic, expressways and railways, open excavation construction is obviously not suitable, so that the pipe jacking construction method becomes a common and mature construction technology. The top pipe is generally made of reinforced concrete, and poor installation quality of rubber sealing rings between pipe joints can cause poor tightness of the whole pipe, so that related property rights units do not allow the reinforced concrete top pipe to be directly used as a drainage overflowing channel due to safety considerations of peripheral facilities of the top pipe, and an inner sleeve needs to be additionally installed in the top pipe to be used as an overflowing channel.

According to the traditional construction method of the jacking pipe and the inner sleeve, the jacking pipe construction is finished to form a channel, the elevation of the jacking pipe needs to be strictly controlled in the jacking construction process, and the jacking process is detected at any time to find that deviation is corrected at any time. And when the pipe jacking construction is finished, pouring concrete in the pipe jacking to serve as an inner sleeve foundation, when the inner sleeve is a steel pipe, hoisting the inner sleeve to the working well, welding the inner sleeve with the previous section of inner sleeve, and then jacking by the pipe jacking machine, so that the operation is repeated until all the construction is finished. Because the inner sleeve is pushed by the push bench, the installation precision of the inner sleeve cannot be adjusted and is difficult to control in the method; the jacking can be started only after the connection between the pipe section and the previous pipe section is completed, and the construction period of the method is long; in the jacking process, the friction force between the inner sleeve and the jacking pipe is large, the required driving force is large, the risk of damage of the inner sleeve and the jacking pipe is increased, and the quality is difficult to ensure; the push bench has long service time and increases the cost of engineering equipment. Therefore, an inner sleeve construction method which is simple in installation process, controllable in construction quality and capable of saving construction period and investment is urgently needed.

Disclosure of Invention

The invention aims to solve the technical problems that aiming at the defects in the prior art, the construction process for installing the inner sleeve steel pipe in the jacking pipe is provided, the pipe joint is installed in a narrow space, the cost of engineering instruments is reduced, the installation height and the gradient of the pipe joint can be accurately adjusted, the construction quality of a pipeline is ensured, the interaction between the pipe joint to be installed and the jacking pipe is reduced, the damage of the jacking pipe and the pipe joint is avoided, the transport vehicles work circularly, two ends of two transport vehicles can work simultaneously, the installation efficiency is improved, and the construction period is greatly shortened.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a construction process for installing an inner sleeve steel pipe in a jacking pipe comprises the following steps:

1) the construction is completed with a pipe-jacking working well and a concrete pipe jacking, and the concrete pipe jacking is horizontally arranged at one side of the pipe-jacking working well and communicated with the pipe-jacking working well;

2) constructing a pipe joint receiving platform in the pipe-jacking working well, wherein the pipe joint receiving platform is arranged at the bottom of the pipe-jacking working well, and the height of the top of the pipe joint receiving platform is consistent with that of the bottom of the concrete pipe jacking;

3) hoisting the lifting transport vehicle to a pipe joint receiving platform from the outside of the pipe jacking working well, and moving the lifting transport vehicle into the concrete pipe jacking;

4) hoisting the first pipe joint from the outside of the pipe jacking working well to a pipe joint receiving platform;

5) penetrating the lifting transport vehicle into the first pipe joint, and supporting the first pipe joint;

6) transporting the first pipe section into the concrete top pipe through a lifting transport vehicle, installing and fixing the first pipe section, and withdrawing the lifting transport vehicle from the first pipe section;

7) hoisting the next pipe joint from the outside of the pipe jacking working well to a pipe joint receiving platform;

8) penetrating the lifting transport vehicle into the pipe joints and supporting the pipe joints;

9) transporting the pipe joint into a concrete jacking pipe through a lifting transport vehicle, splicing the pipe joint with the previous pipe joint, installing and fixing the pipe joint, and withdrawing the lifting transport vehicle from the pipe joint;

10) and repeating the steps 7) -9) until all the pipe joints are installed and fixed in place in the concrete top pipe.

According to above-mentioned technical scheme, the lift transport vechicle includes crossbeam and three pole setting, and three pole setting is first pole setting, second pole setting and third pole setting respectively, and first pole setting, second pole setting and third pole setting are arranged in proper order in the crossbeam bottom along length direction, and the distance between second pole setting and the third pole setting is greater than the length of tube coupling, all is equipped with altitude controller in first pole setting, second pole setting and the third pole setting, and the bottom of first pole setting, second pole setting and third pole setting all is equipped with the slide dolly.

According to the technical scheme, in the steps 5) and 8), after the lifting transport vehicle penetrates into the pipe joints, the cross beam is lifted through the second vertical rod and the third vertical rod height adjuster, and the first pipe joint is supported.

According to the technical scheme, the height adjuster comprises a sleeve, the upright rod comprises an upper upright rod and a lower upright rod, the upper end of the upper upright rod is connected with the cross beam, the lower end of the upper upright rod is connected with the sleeve through threads, the upper end of the lower upright rod is connected with the sleeve, and the lower end of the lower upright rod is connected with the sliding trolley.

According to the technical scheme, the rubber pad is arranged on the cross beam.

According to the technical scheme, in the step 9), the length of the first vertical rod is adjusted through the height adjuster in the process of splicing the pipe joint with the previous pipe joint, so that the first vertical rod enters the previous pipe joint to form a support, the second vertical rod is shortened through height adjustment, the pipe joint is spliced with the previous pipe joint, and then the pipe joint is installed and fixed.

According to the technical scheme, in the step 6) and the step 9), the installation and fixation process of the pipe joint specifically comprises the steps of arranging buttresses at two ends of the bottom of the pipe joint, and grouting concrete between the two buttresses and the bottom of the pipe joint.

According to the technical scheme, the front end and the rear end of the lifting transport vehicle are both connected with the dragging steel ropes, and the lifting transport vehicle can move back and forth in the concrete jacking pipe by dragging the dragging steel ropes.

The invention has the following beneficial effects:

according to the invention, the pipe joints are installed in a narrow space by dragging and lifting the lifting transport vehicle, so that the cost of engineering instruments is reduced, the installation height and the gradient of the pipe joints can be accurately adjusted, the construction quality of pipelines is ensured, the interaction between the pipe joints to be installed and the jacking pipes is reduced, the damage to the jacking pipes and the pipe joints is avoided, the transport vehicle works circularly, two ends of the two transport vehicles can work simultaneously, the installation efficiency is improved, and the construction period is greatly shortened.

Drawings

FIG. 1 is a schematic structural view of a lift truck according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of jacking a pipe section in an embodiment of the present invention;

FIG. 3 is a schematic illustration of the installation of a first pipe section in an embodiment of the invention;

FIG. 4 is a schematic illustration of the transport of a second pipe section in an embodiment of the invention;

FIG. 5 is a schematic illustration of the second pipe section and the first pipe section assembled together in an embodiment of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

in the figure, 11-a pipe jacking working well and 12-a pipe joint receiving platform; 2-concrete top pipe, 301-first pipe joint, 311-first pipe joint buttress, 321-first pipe bottom grouted concrete, 302-second pipe joint, 312-second pipe joint buttress, 322-second pipe bottom grouted concrete, 4-lifting transport vehicle, 411-cross beam, 412-rubber pad, 421-first vertical rod, 422-second vertical rod, 423-third vertical rod, 431-first height adjuster, 432-second height adjuster, 433-third height adjuster, 441-trolley and 451-dragging steel rope.

Detailed Description

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

Referring to fig. 1 to 6, the construction process for installing the inner sleeve steel pipe in the jacking pipe in one embodiment provided by the invention is characterized by comprising the following steps:

1) after construction, the pipe-jacking working well 11 and the concrete pipe jacking 2 are completed, wherein the concrete pipe jacking 2 is horizontally arranged on one side of the pipe-jacking working well 11 and is communicated with the pipe-jacking working well 11;

2) the pipe joint receiving platform 12 is constructed in the pipe-jacking working well 11, the pipe joint receiving platform 12 is arranged at the bottom of the pipe-jacking working well 11, and the height of the top of the pipe joint receiving platform is consistent with that of the bottom of the concrete pipe jacking 2;

3) hoisting the lifting transport vehicle 4 from the outside of the pipe jacking working well 11 to a pipe joint receiving platform 12, and moving the lifting transport vehicle into the concrete pipe jacking 2;

4) hoisting a first pipe joint 301 from the outside of the pipe-jacking working well 11 to a pipe joint receiving platform 12;

5) penetrating the lifting transport vehicle 4 into the first pipe joint 301, and lifting up the first pipe joint 301;

6) the first pipe section 301 is transported into the concrete top pipe 2 through the lifting transport vehicle 4, the first pipe section 301 is installed and fixed, and the lifting transport vehicle 4 withdraws from the first pipe section 301;

7) hoisting the next pipe joint from the outside of the pipe-jacking working well 11 to a pipe joint receiving platform 12;

8) penetrating the lifting transport vehicle 4 into the pipe joint and supporting the pipe joint;

9) the pipe joint is transported into the concrete top pipe 2 through the lifting transport vehicle 4, the pipe joint and the previous pipe joint are spliced, installed and fixed, and the lifting transport vehicle 4 is withdrawn from the pipe joint;

10) and repeating the steps 7) -9) until all the pipe joints are installed and fixed in place in the concrete top pipe 2.

Further, lift transport vechicle 4 includes crossbeam 411 and three pole setting, and three pole setting is first pole setting 421, second pole setting 422 and third pole setting 423 respectively, and first pole setting 421, second pole setting 422 and third pole setting 423 arrange in proper order in crossbeam 411 bottom along length direction, and the distance between second pole setting 422 and the third pole setting 423 is greater than the length of tube coupling, all is equipped with altitude controller on first pole setting 421, second pole setting 422 and the third pole setting 423, and the bottom of first pole setting 421, second pole setting 422 and third pole setting 423 all is equipped with trolley 441.

Further, the first upright stanchion 421, the second upright stanchion 422 and the third upright stanchion 423 are respectively provided with a first height adjuster 431, a second height adjuster 432 and a third height adjuster 433.

Further, in the above steps 5) and 8), after the lifting transport cart 4 penetrates into the pipe joint, the cross beam 411 is lifted by the height adjuster of the second vertical rod 422 and the third vertical rod 423, so as to support the first pipe joint.

Further, the height adjuster comprises a sleeve, the upright comprises an upper upright and a lower upright, the upper end of the upper upright is connected with the cross beam 411, the lower end of the upper upright is connected with the sleeve through threads, the upper end of the lower upright is connected with the sleeve, and the lower end of the lower upright is connected with the trolley 441; the upright pole is stretched by rotating the sleeve.

Further, a rubber pad 412 is disposed on the cross beam 411.

Further, in the step 9), in the process of splicing the pipe joint with the previous pipe joint, the height adjuster 431 of the first vertical rod 421 is adjusted to enable the first vertical rod to reach a corresponding length, the first vertical rod enters the previous pipe joint to form a support, the second vertical rod 422 is shortened through height adjustment, the pipe joint is spliced with the previous pipe joint, and then the pipe joint is installed and fixed.

Further, in the step 6) and the step 9), the installation and fixation process of the pipe joint specifically includes arranging buttresses at two ends of the bottom of the pipe joint, and grouting concrete between the two buttresses and the bottom of the pipe joint.

Further, the pier at the bottom of the first pipe section 301 is a first pipe section pier 311, the grouted concrete between the two first pipe section piers 311 is first pipe bottom grouted concrete 321, the pier at the bottom of the second pipe section 302 is a second pipe section pier 312, and the grouted concrete between the two second pipe section piers 312 is second pipe bottom grouted concrete 322.

Furthermore, the front end and the rear end of the lifting transport vehicle 4 are both connected with a dragging steel rope, and the lifting transport vehicle 4 can move back and forth in the concrete jacking pipe 2 by dragging the dragging steel rope.

Furthermore, the transport vehicles work circularly, and two ends of the two transport vehicles can work simultaneously, so that the mounting efficiency is improved, and the construction period is greatly shortened.

The working process of the invention is as follows:

the method comprises the following steps: and (3) completing the pipe-jacking working well 11, the receiving well and the reinforced concrete sleeve pipe jacking in sequence, and dismantling and removing the pipe-jacking machine equipment.

Step two: the pipe joints are subjected to the construction of the platform 12.

And filling the pouring pipe joint receiving platform 12 with concrete in the working well, wherein the finished surface elevation of the pipe joint receiving platform 12 is the same as the elevation of the inner bottom of the pipeline of the constructed jacking pipe 2, and the step mainly provides a flat walking surface for the transport vehicle 4, so that the transport vehicle can stably walk after supporting the pipe joint.

Step three: manufacturing, installing and debugging a transport vehicle;

the transport vehicle is made of steel members, and the transport vehicle beam 411 and the three vertical rods 421-423 are fixed by bolts, so that later-stage disassembly is facilitated; the top of the transport vehicle beam 411 is provided with a rubber pad 412; the transport vehicle upright posts 421-423 are provided with height regulators 431-433, and the lengths of different upright posts can be respectively adjusted; the bottom of the upright post is supported by a pulley trolley 441;

the steel member model is determined according to the maximum weight of the pipe joints conveyed by the transport vehicle, the transport vehicle 4 is integrally firm and durable, the upper connecting plate and the lower connecting plate are convenient to mount and dismount, and the wheels of the sliding plate trolley 441 roll stably.

Step four: the first pipe joint 301 is hoisted, transported and installed;

the first pipe joint 301 is stably placed on the pipe joint receiving platform 12 by using hoisting equipment; the height adjusters 431 to 433 of the descending vertical rods provide traction force by the dragging steel ropes 451 to enable the transport cart 4 to pass through the first pipe joint 301, and the pulley trolleys on the second vertical rod 422 and the third vertical rod 423 are respectively positioned on the pipe joint receiving platform 12 on the outer sides of the two ends of the first pipe joint 301.

Height adjusters 432 and 433 on the lifting upright poles 422 and 423 are adjusted to jack the first pipe joint 301 up to leave the ground;

traction force is provided by the dragging steel rope 451 to enable the transport vehicle to slowly run to a specified installation position in the top pipe 2;

adjusting the height regulators 432 and 433 of the upright rods of the transport vehicle 4 again according to the requirements of pipeline design files to enable the elevation and the gradient of the first pipe joint 301 to meet the technical requirements; a buttress 311 is arranged at the bottom of the first pipe joint 301, and poured concrete 321 is used as a first pipe joint foundation;

step five: hoisting, transporting and installing the second pipe joint 302;

height adjusters 432 and 433 on the lifting vertical rods 422 and 423, and the first pipe joint 301 is supported and stabilized by the buttress 311;

the second pipe joint 302 is stably placed on the pipe joint receiving platform 12 by using hoisting equipment; traction provided by the towing ropes 451 causes the vehicle 4 to pass through the second pipe section 302; height adjusters 432 and 433 on the lifting vertical rods 422 and 423 are adjusted to jack the second pipe joint 302 up to leave the ground; the traction force provided by the dragging steel rope 451 enables the transport vehicle to slowly run to be close to the first pipe joint 301;

the height adjuster 431 of the lifting upright 421 is adjusted to make the trolley 441 higher than the bottom of the first pipe joint 301, and the dragging steel rope 451 drags the transport cart 4 to make the trolley 441 enter the first pipe joint 301; the height adjuster 431 on the vertical rod 421 is adjusted and lowered to fall in the first pipe joint, and the second pipe joint is supported by the vertical rods 421 and 423;

similarly, according to the requirements of pipeline design files, the height adjuster 431 on the upright 421 and the height adjuster 433 on the long upright 423 of the transport vehicle 4 are adjusted to make the elevation and the gradient of the second pipe joint 302 meet the technical requirements; the bottom of the first pipe section 302 is provided with a pier 312, and poured concrete 322 is used as the foundation of the second pipe section 302;

step six: connecting and repairing the first pipe joint and the second pipe joint;

step seven: hoisting, transporting and installing a third pipe joint; … … and so on until all pipe joints are installed.

According to the construction method of the casing pipe joint, the pipe joint is transported by the special transport vehicle instead of the conventional mode of transporting by the pipe jacking machine, so that the working time of the pipe jacking machine can be greatly shortened, and the equipment cost is reduced; the steel pipe is suspended in the air by the trolley in the whole process, so that the sleeve and the steel pipe are prevented from being damaged, and the service lives of the sleeve and the pipe joint are prolonged; through measuring the unwrapping wire and adjusting the travelling bogie height, adjustment tube coupling installation elevation, slope and concentricity, control tube coupling installation quality that can be more accurate.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.