CN105735244B - A kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe - Google Patents

A kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe Download PDF

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Publication number
CN105735244B
CN105735244B CN201610072607.XA CN201610072607A CN105735244B CN 105735244 B CN105735244 B CN 105735244B CN 201610072607 A CN201610072607 A CN 201610072607A CN 105735244 B CN105735244 B CN 105735244B
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steel
bar
sewage conduct
reinforcement cage
pulley
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CN105735244A (en
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吕海敏
沈水龙
刘晓雪
李辉
林梦莹
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Shanghai Jiao Tong University
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Shanghai Jiao Tong University
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18Bulkheads or similar walls made solely of concrete in situ
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/08Sinking workpieces into water or soil inasmuch as not provided for elsewhere
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/06Foundation trenches ditches or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron
    • E02D2300/0032Steel; Iron in sheet form, i.e. bent or deformed plate-material

Abstract

The invention provides a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe, including:The first step, according to excavated completion wall and operation side are led, pipeline building enclosure is set up at the left and right sides of sewage conduct;Second step, the first step construction after the completion of, make steel reinforcement cage;3rd step, the first step and second step construction after the completion of, carry out groove section excavate;4th step, reinforcement cage hoisting and decentralization;5th step, treat the decentralization of sewage conduct both sides steel reinforcement cages after the completion of, detected again after the I-steel of both sides using ultrasonic wave, confirm whether I-steel vertical, and whether function steel reinforcement cage vertical, then adjusts steel reinforcement cage, until steel reinforcement cage is completely vertical;6th step, concrete cast.The present invention adheres to efficient, economic, environmentally friendly principle in whole work progress, substantially reduces the construction period, improves engineering efficiency.

Description

A kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe
Technical field
The present invention relates to a kind of design and construction method in underground structrue engineering technical field, in particular it relates to which one kind is ridden Across the underground continuous wall groove segment design and construction method of existing sewage pipe.
Background technology
In underground structrue engineering work progress, diaphram wall has the rigidity of structure big, and overall performance is good, has simultaneously The advantages of good impermeability and durability.Thus, in city underground and underground structure building course, diaphram wall It is widely used.But, complex geologic conditions are often run into during construction of diaphragm wall, underground water is more It is abundant, the problems such as passing through the existing pipeline in underground.The presence of the existing pipeline in underground can cause serious shadow to the construction of diaphram wall Ring.
When diaphram wall runs into existing underground utilities in work progress, it will usually change arranging for underground utilities using cutting Apply, or underground utilities temporary shift to the road surface expanded is treated that underground utilities are moved into original again after the completion of construction of diaphragm wall Position.But, diaphram wall in work progress such as underground sewer, when rainy season set, sewer line will be unable into Row, which is cut, to be changed, and this will have a strong impact on the construction period of diaphram wall.Thus, invent a kind of underground for riding existing sewage pipe and connect The construction technology of continuous wall chase section has highly important engineering application value.
Retrieval to existing technical literature finds that it is continuous that the existing construction about diaphram wall relates generally to underground The constructing device and method of wall seam crossing, the number of applying for a patent:201410098282.3, application publication number:CN103835316A, specially Sharp title:The joint design and construction method of a kind of coercion underground continuous wall;Application number:201310676753.X, Shen Qing Publication Number:CN103726513A, patent name:Joint waterproof structure of underground diaphragm wall and construction method;The number of applying for a patent: 200810038277.8, patent publication No.:CN101591909A, patent name:One kind is in urban construction under underground utilities Construction method of underground continuous wall, the patent readme:" it is an advantage of the invention that without removing in the construction of Urban Underground diaphragm wall Underground utilities are moved, substantial amounts of human and material resources, financial resources, and without prejudice to traffic is saved." however, described in it in underground utilities Under diaphram wall construction method, do not account for the influence of construction period rainfall, meanwhile, do not account for buried pipe yet The geological conditions on the stratum under line, the stratum crushing under underground utilities when geological conditions is bad, is possible to meeting in work progress Existing underground utilities are damaged, so as to hinder the construction of diaphram wall, the construction to diaphram wall causes serious shadow Ring.
The content of the invention
The problem of existing during for passing through underground utilities during existing construction of diaphragm wall and defect, the present invention are proposed A kind of underground continuous wall groove segment design and construction method that existing sewage pipe is ridden in rainy season set, in construction of diaphragm wall mistake Existing sewage pipe is protected not to be destroyed in journey, the influence for not influenceing rainy season set to cause construction,
The present invention is realized by following scheme:
It is a kind of ride existing sewage pipe underground continuous wall groove segment design and construction method, the design and construction method include with Lower step:
The first step, according to excavated completion wall and operation side are led, set up at the left and right sides of sewage conduct Pipeline building enclosure, wherein pipeline building enclosure include pipeline enclosure device and hanging wheel device, and the pipeline enclosure device is used for Sewage conduct is protected not to be destroyed in diaphram wall decentralization process, the hanging wheel device is used to ensure the reinforcing bar with pulley Cage can be transferred vertically;
1) pipeline enclosure device is set up in the sewage conduct left and right sides:Two, which are installed, in ground sewage pipeline both sides fixes branch Seat, is wrapped up using double steel bar mesh sheet from sewage conduct bottom, is welded, is poured jointly with the hold-down support of top two upwards, it is ensured that Sewage conduct it is firm;
2) hanging wheel device is set up on the right side of sewage conduct;
Second step, the first step construction after the completion of, make steel reinforcement cage:Steel reinforcement cage should in manufacturing process medial end portions and junction block Certain space is left, the position of conduit is reserved at the intensive position of reinforcing bar;Steel reinforcement cage form uses L-type steel reinforcement cage, in L-type Hangs muscle is left in the end of steel reinforcement cage, and a steel reinforcement cage pulley is installed at the turning point of L-type steel reinforcement cage, and correction steel wire passes through steel reinforcement cage Pulley is corrected to the position of steel reinforcement cage;
3rd step, the first step and second step construction after the completion of, the sewage conduct left and right sides carry out groove section excavate formed Groove:
1) first grab, position is close on the left of sewage conduct, apart from 150~200mm on the left of sewage conduct;
2) second grab, position is close on the right side of sewage conduct, apart from 150~200mm on the right side of sewage conduct;
3) use long-armed digging machine, the dregs below sewage conduct dug out, above sewage conduct the soil body after both sides soil is dug out, Utilize the gravity of itself and rain drop erosion effect free-falling;Steel is installed additional in the bucket body opposite direction with the bucket of long-armed digging machine Plate, makes bucket body to inclination under sewage conduct, the stand out between chute forming machine bucket body and bucket body upper end steel wire rope is recycled, to sewage pipe Road side is translated, and the dregs below pipeline is dug out;
4) chute forming machine is moved to first and grabs position, below the opposite side of sewage conduct, translated to sewage conduct, by sewage Remaining dregs is grabbed only below pipeline;
4th step, reinforcement cage hoisting and decentralization
1) steel reinforcement cage decentralization on the left of sewage conduct:Suspension centre is arranged in and is biased against sewage conduct side by steel reinforcement cage when transferring;When When one jiao of steel reinforcement cage transfers to bottom land, sewage conduct is bypassed below sewage conduct opposite side with correction steel wire, makes it from sewage Give steel reinforcement cage one lateral pull by hanging wheel device on the right side of pipeline, it is ensured that steel reinforcement cage is vertically transferred to immediately below sewage conduct, And slurries are maintained at below sewage conduct in decentralization process bracket groove;
2) after the decentralization in place of left side steel reinforcement cage, detected using ultrasonic wave after the I-steel of left side whether confirm I-steel Vertically, and whether steel reinforcement cage is vertical, steel reinforcement cage is then adjusted, until steel reinforcement cage is completely vertical;
3) confirm that left side steel reinforcement cage vertically after decentralization, removes the hanging wheel device on the right side of sewage conduct, will be left on hanging wheel device The correction steel wire winding of side steel reinforcement cage is on the steel reinforcement cage pulley of right side steel reinforcement cage, under being carried out to steel reinforcement cage on the right side of sewage conduct Put, when one jiao of steel reinforcement cage transfers to bottom land, the hangs muscle of adjustment steel reinforcement cage end and the correction steel wire for bypassing steel reinforcement cage pulley, really Right side steel reinforcement cage is protected vertically to transfer;
4) confirm that right side steel reinforcement cage vertically after decentralization, in the sewage conduct left and right sides, passes through steel reinforcement cage pulley and correction steel Silk pulls left and right sides steel reinforcement cage, makes the linking of both sides steel reinforcement cages, it is allowed to joint gap be 300mm;
5th step, treat the decentralization of sewage conduct both sides steel reinforcement cages after the completion of, to ensure that steel reinforcement cage is vertical, using ultrasonic wave two Detected again after the I-steel of side, confirm whether the position of I-steel and steel reinforcement cage is vertical, then adjust steel reinforcement cage, until reinforcing bar Cage is completely vertical;
6th step, concreting.
Preferably, the step 1 of the first step) in, the pipeline enclosure device includes the integrated mould of fixed chain bar, pulley steel plate Block and double layer bar module, wherein:Pulley steel plate integrated module is fixedly mounted respectively in the left and right sides of sewage conduct, Gu Determine chain bar and the pulley steel plate integrated module of the sewage conduct left and right sides is welded to connect, double layer bar module is by sewage conduct It is connected after parcel with pulley steel plate integrated module.
It is highly preferred that the fixed chain bar is a steel pipe, the length of steel pipe is:L1=D+2 × (150~200) mm, D For sewage conduct diameter (mm);Steel pipe it is a diameter of:d0=20mm.
It is highly preferred that the double layer bar module includes two panels rectangular double-layer bar-mat reinforcement and a piece of arc-shaped double-layer reinforcing bar Net, wherein:Two panels rectangular double-layer bar-mat reinforcement is respectively arranged in the left and right sides of sewage conduct, the two ends point of arc-shaped double-layer bar-mat reinforcement Do not welded with two panels rectangular double-layer bar-mat reinforcement, sewage conduct is wrapped up;Two are provided with the end of rectangular double-layer bar-mat reinforcement Nut;It is 150~200mm that the two panels rectangular double-layer bar-mat reinforcement of the sewage conduct left and right sides, which is installed on, apart from sewage conduct distance, Distance of the arc-shaped double-layer bar-mat reinforcement apart from sewage conduct bottom is 500mm.
It is highly preferred that the width of the rectangular double-layer bar-mat reinforcement is L2, L2The influence model of sewage conduct is faced depending on construction operation Enclose determination;
The length L of the rectangular double-layer bar-mat reinforcement3Meet formula:Wherein:H is sewage conduct Buried depth (mm), D is sewage conduct diameter (mm);
The thickness of the rectangular double-layer bar-mat reinforcement is d1, d1Generally take 20~40mm.
It is highly preferred that the radius R of the arc-shaped double-layer bar-mat reinforcement meets formula:Wherein D For sewage conduct diameter (mm);
The arc length of the arc-shaped double-layer bar-mat reinforcement is the length L of fixed chain bar1
It is highly preferred that the pulley steel plate integrated module links steel plate and cogongrass head by pulley, straight grappling reinforcing bar, bar-mat reinforcement Composition, wherein:Straight grappling reinforcing bar bypasses pulley, and the two ends of straight grappling reinforcing bar reserve identical length and link steel plate with bar-mat reinforcement Center weld, and two pads link the geometric center of steel plate point-blank with bar-mat reinforcement;And in bar-mat reinforcement link Steel plate end equidistant is connect on the center line of steel plate, apart from reinforcing bar network chain and leaves two cogongrass heads, cogongrass head position and rectangular double-layer steel The nut location of muscle net end is corresponding.
It is highly preferred that the straight grappling reinforcing bar is the reinforcing bars of Φ 20, its length m meets formula:M=d2+ 20 (mm), wherein d2 The thickness of steel plate, d are linked for bar-mat reinforcement2Usually 20~40 (mm).
It is highly preferred that the thickness of the bar-mat reinforcement link steel plate is d2, d2Usually 20~40 (mm);
The length of the bar-mat reinforcement link steel plate is the width L of rectangular double-layer bar-mat reinforcement2(mm);
The width of bar-mat reinforcement link steel plate is
Preferably, the deadweight F of the pipeline enclosure device meets formula:
F=α (V1+V2+V3) (kg),
In formula:α is the calculated theoretical density (kg/m of steel3), α is usually 7~8kg/m3
V1For the volume (m of fixed chain bar3), V1Formula is calculated as below in satisfaction:
V2For the volume (m of double layer bar module3), V2Formula is calculated as below in satisfaction:
V3For the volume (m of pulley steel plate integrated module3), V3Formula is calculated as below in satisfaction:
It is highly preferred that the deadweight of the pipeline enclosure device
In formula:G is the deadweight (kg) of the pipeline overlying soil body, γIt is flatFor the average severe (kN/m of the pipeline overlying soil body3), h is Sewage conduct buried depth (mm);As F≤G, pipeline building enclosure meets design requirement.
Preferably, the step 2 of the first step) in, the hanging wheel device includes pulley module, balance module and steel wire rope, its In:Pulley module is made up of pulley grappling reinforcing bar and hanging wheel pulley, and steel wire rope one end is connected with balance module, pulley grappling reinforcing bar It is connected after bypassing hanging wheel pulley with balance module.
Preferably, in the 6th step, the strength grade of concrete is C30, and the ratio of mud is not less than 0.6;The concrete is poured Using the method laterally poured when building, for sewage conduct both sides steel reinforcement cage seam crossing casting concrete, for sewage conduct bottom In the range of portion at casting concrete to arc-shaped double-layer bar-mat reinforcement.
The present invention compared with prior art, has the advantages that;
Present invention efficiently solves during rainy season construction, constructional difficulties asks at diaphram wall chance sewer line Topic, efficient, economic, environmentally friendly principle is adhered in whole work progress, the construction period is substantially reduced, and improves engineering effect Rate.
Brief description of the drawings
By reading with reference to the following drawings to riding the underground continuous wall groove segment constructing device design method of existing sewage pipe The detailed description that embodiment is made, other features, objects and advantages of the invention will become more apparent upon:
Fig. 1 is the sewage pipe line distribution figure that one embodiment of the invention is related to;
Fig. 2 is one embodiment of the invention pipeline enclosure device schematic diagram;
Fig. 3 is one embodiment of the invention pulley steel plate integrated module left profile schematic diagram;
Fig. 4 is one embodiment of the invention pulley steel plate integrated module top view;
Fig. 5 is one embodiment of the invention rectangular double-layer bar-mat reinforcement left profile schematic diagram;
Fig. 6 is to grab groove schematic diagram below one embodiment of the invention pipeline;
Fig. 7-a and Fig. 7-b are that one embodiment of the invention steel reinforcement cage transfers schematic diagram;
Fig. 8 is one embodiment of the invention steel reinforcement cage position view;
In figure:
1 is fixed chain bar, and 2-1 is pulley, and 2-2 is straight grappling reinforcing bar, and 2-3 is that bar-mat reinforcement links steel plate, and 2-4 is cogongrass head, 3-1 is bar-mat reinforcement chain connected nut, and 3-2 is rectangular double-layer bar-mat reinforcement, and 3-3 is arc-shaped double-layer bar-mat reinforcement, and 4 be hangs muscle, and 5 be steel reinforcement cage Pulley, 6 be correction steel wire, and 7-1 is pulley grappling reinforcing bar, and 7-2 is hanging wheel pulley, and 8 be balance module, and 9 be steel wire rope.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection domain.
By taking certain subway line as an example, involved sewage conduct is single a length of 2m, diameter 1.65m, is buried in underground About 6m depths, the average severe of the overlying soil body obtained by field test is γIt is flat.The presence influence 4-73 width ground-connecting-walls of the sewage conduct Construction.Sewage pipe line distribution figure is as shown in Figure 1.
One kind rides the constructing device design method of the underground continuous wall groove segment of existing sewage pipe in rainy season set, has The design and construction method of body comprises the following steps:
The first step, according to excavated completion wall and operation side are led, set up at the left and right sides of sewage conduct Pipeline building enclosure, wherein pipeline building enclosure include pipeline enclosure device and hanging wheel device, and pipeline enclosure device is used to protect Pipeline is not destroyed in ground-connecting-wall decentralization process, and hanging wheel device is used to ensure that the steel reinforcement cage with pulley can be transferred vertically:
1) pipeline enclosure device is set up in the sewage pipe left and right sides
Two hold-down supports are installed in ground sewage pipeline both sides, wrapped up using double steel bar mesh sheet from sewage conduct bottom, Weld, pour jointly upwards and with the hold-down support of top two, it is ensured that sewage conduct it is firm.
As shown in Fig. 2 as a preferred embodiment, the pipeline enclosure device includes:Fixed chain bar 1, pulley steel plate Integrated module and double layer bar module, its annexation is:Pulley is fixedly mounted respectively in the left and right sides of sewage conduct Steel plate integrated module, fixed chain bar 1 carries out welding company with being connected the pulley steel plate integrated module of the sewage conduct left and right sides Connect, double layer bar module is connected after sewage conduct is wrapped up with pulley steel plate integrated module.
As shown in Fig. 2 as a preferred embodiment, the fixed chain bar 1 is a steel pipe, length of steel pipe is:L1=D + 2 × 200=2050 (mm).
As a preferred embodiment, the double layer bar module is by bar-mat reinforcement chain connected nut 3-1, two panels rectangular double-layer Bar-mat reinforcement 3-2 and a piece of arc-shaped double-layer bar-mat reinforcement 3-3 compositions, wherein:Two bar-mat reinforcement chain connected nut 3-1 are arranged at rectangular double-layer Bar-mat reinforcement 3-2 end, and the cogongrass head 2-4 positions that its position is linked with bar-mat reinforcement on steel plate 2-3 are corresponding;Arc-shaped double-layer steel Muscle net 3-3 two ends are welded with two panels rectangular double-layer bar-mat reinforcement 3-2 respectively, and sewage conduct is wrapped up.Sewage conduct or so The two panels rectangular double-layer bar-mat reinforcement 3-2 of both sides apart from sewage conduct distance be 150~200mm, arc-shaped double-layer bar-mat reinforcement 3-3 away from From with a distance from sewage conduct bottom be 500mm.
As a preferred embodiment, the width of the rectangular double-layer bar-mat reinforcement 3-2 is L2, L is taken in the present embodiment2=D= 1650 (mm), length isThickness d1=30 (mm).
As a preferred embodiment, the radius of the arc-shaped double-layer bar-mat reinforcement 3-3 isArc The length L of a length of fixed chain bar 11=2050 (mm).
As shown in Figure 3, Figure 4, the pulley steel plate integrated module is by pulley 2-1, straight grappling reinforcing bar 2-2, reinforcing bar network chain Steel plate 2-3 and cogongrass head 2-4 compositions are connect, wherein:Straight grappling reinforcing bar 2-2 bypasses pulley 2-1, its two ends reserve identical length with Bar-mat reinforcement link steel plate 2-3 center weld, two pads link steel plate 2-3 geometric center in straight line with bar-mat reinforcement On;On the center line that bar-mat reinforcement links steel plate 2-3, connect steel plate 2-3 ends equidistant apart from reinforcing bar network chain and leave two cogongrass heads 2-4。
As a preferred embodiment, the straight grappling reinforcing bar 2-2 is the reinforcing bars of Φ 20, and its length is m=d2+ 20=20+ 20=40 (mm).
As a preferred embodiment, the thickness of the bar-mat reinforcement link steel plate 2-3 is d2, 20mm is used in the present embodiment Thick steel plate, its length is rectangular double-layer bar-mat reinforcement 3-2 width L2=1650 (mm), width is
In the present embodiment, the deadweight F of the pipeline enclosure device meets formula:
F=α (V1+V2+V3) (kg),
In formula:Calculated theoretical density (the kg/m of α-steel3), α=7.8 (kg/m in the present embodiment3);
V1Volume (the m of-fixation chain bar 13), calculation formula is as follows:
V2Volume (the m of-double layer bar module3), calculation formula is as follows:
V3Volume (the m of-pulley steel plate integrated module3), calculation formula is as follows:
Obtain the deadweight F of the pipeline enclosure device:
F=α (V1+V2+V3)=7.8 × (0.001+0.394+0.03)=3.315 (kg)
The pipeline overlying soil body is conducted oneself with dignity:G=102 (γIt is flat·h)(kg)
During F≤G, pipeline building enclosure meets design requirement.
2) hanging wheel device is set up on the right side of sewage pipe.
As shown in Fig. 2, Fig. 7-a, the hanging wheel device is made up of pulley module, balance module 8 and steel wire rope 9, pulley mould Block is made up of pulley grappling reinforcing bar 7-1 and hanging wheel pulley 7-2, and one end of steel wire rope 9, by being welded to connect, is slided with balance module 8 Wheel grappling reinforcing bar 7-1 bypasses hanging wheel pulley 7-2 and is welded to connect with balance module 8.
As a preferred embodiment, the pulley grappling reinforcing bar 7-1 is the reinforcing bars of Φ 20, and its length is 120mm.
As a preferred embodiment, the balance module 8 is a rectangular steel plates, using Q235 steel, its a length of 300mm, A width of 200mm, thickness are 100mm.
As a preferred embodiment, the length of steel wire rope 9 is 5.2m, 6 × 19+1 of model, and (wherein 6 representatives are coiled into The number of share of stock of steel wire rope, 19 represent it is per share in steel wire number, 1 represent in the middle of hemp core);As shown in Figure 2.
After the completion of second step, first step construction, steel reinforcement cage is made:
The steel reinforcement cage should leave 150~200mm space in manufacturing process medial end portions and junction block, intensive in reinforcing bar Position reserves the position of conduit;The steel reinforcement cage form uses L-type steel reinforcement cage, and hangs muscle 4 is left in the end of L-type steel reinforcement cage, One steel reinforcement cage pulley 5 is installed at the turning point of L-type steel reinforcement cage, correction steel wire 6 can be to steel reinforcement cage by steel reinforcement cage pulley 5 Position is corrected, as shown in Figure 5.
After the completion of 3rd step, the first step and second step construction, groove section milling slot is carried out, specifically:
1) first grab (see Fig. 6), position is close on the left of sewage conduct, apart from 150~200mm on the left of sewage conduct, first Width is grabbed for 2.8m, depth is grabbed to -43.21m;
2) second grab (see Fig. 6), position is close on the right side of sewage conduct, apart from 150~200mm on the right side of sewage conduct, second Width is grabbed for 2.8m, depth is grabbed to -43.21m;
3) dregs below sewage conduct is dug out with long-armed digging machine, depth is dug to -13m;The soil body is treated above sewage conduct After both sides soil is dug out, free-falling is acted on using the gravity of its own and rain drop erosion;In the bucket body with the bucket of long-armed digging machine Opposite direction installs steel plate additional, makes bucket body to inclination under sewage conduct, recycles between chute forming machine bucket body and bucket body upper end steel wire rope Stand out, about 50cm, translate to sewage conduct side, continue below and grab to from -43.21m downwards from sewage conduct;
4) chute forming machine is moved to first and grabs position, with same principle below the opposite side of sewage conduct, to sewage conduct Translation, remaining dregs below sewage conduct is grabbed only, until -43.21m places.
4th step, reinforcement cage hoisting and decentralization, specifically:
1) steel reinforcement cage decentralization on the left of sewage conduct
Suspension centre is arranged in and is biased against sewage conduct side by steel reinforcement cage when transferring;When one jiao of steel reinforcement cage transfers to bottom land, use Correction steel wire 6 bypasses sewage conduct below sewage conduct opposite side, makes it on the right side of sewage conduct by hanging wheel pulley 7-2, Give steel reinforcement cage one lateral pull, it is ensured that steel reinforcement cage is vertically transferred to immediately below sewage conduct, and steel reinforcement cage is in decentralization process bracket groove Interior slurries should be maintained at below sewage conduct, as shown in Fig. 7-a;
2) after the decentralization in place of left side steel reinforcement cage, detected using ultrasonic wave after the I-steel of left side whether confirm I-steel Vertically, and whether steel reinforcement cage is vertical, steel reinforcement cage is then adjusted, until steel reinforcement cage is completely vertical;
3) confirm that left side steel reinforcement cage vertically after decentralization, removes the hanging wheel device on the right side of sewage conduct, will be left on hanging wheel device The correction steel wire 6 of side steel reinforcement cage is wound on the steel reinforcement cage pulley 5 on right side, and steel reinforcement cage on the right side of sewage conduct is transferred;When When one jiao of steel reinforcement cage transfers to bottom land, the hangs muscle 4 of adjustment steel reinforcement cage end and the correction steel wire 6 for bypassing steel reinforcement cage pulley 5, it is ensured that Right side steel reinforcement cage is vertically transferred, as shown in Fig. 7-b;
4) confirm that right side steel reinforcement cage vertically after decentralization, in the sewage conduct left and right sides, passes through steel reinforcement cage pulley 5 and correction steel Silk 6 pulls left and right sides steel reinforcement cages, makes the linking of both sides steel reinforcement cages, it is allowed to joint gap be 300mm, as shown in Figure 8.
5th step, treat the decentralization of sewage conduct both sides steel reinforcement cages after the completion of, to ensure that steel reinforcement cage is vertical, using ultrasonic wave two Detected again after the I-steel of side, confirm whether I-steel is vertical, and whether steel reinforcement cage is vertical, then adjusts steel reinforcement cage, until Steel reinforcement cage is completely vertical.
6th step, concrete cast:
Strength grade of concrete is C30, and the ratio of mud is not less than 0.6;It is right using the method laterally poured during concreting In sewage pipe both sides steel reinforcement cage seam crossing casting concrete, for casting concrete in sewage pipe bottom range to arc-shaped double-layer steel At muscle net.
Further,, can be with the above-described embodiments after the 6th step as a preferred embodiment:Reinforcing bar cage location After confirmation, as needed, the fixation chain bar 1 and pulley 2-1 of pipe-line maintenance device can be removed optionally.Then concrete is carried out again Cast.
The implementation that the underground continuous wall groove segment design and construction method for riding existing sewage pipe is given in above-described embodiment is thin Section, is efficiently solved during rainy season construction, the problem of diaphram wall meets constructional difficulties at sewer line, is entirely being constructed During adhere to efficient, economic, environmentally friendly principle, substantially reduce the construction period, improve engineering efficiency.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring the substantive content of the present invention.

Claims (10)

1. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe, it is characterised in that methods described includes Following steps:
The first step, according to excavated completion wall and operation side are led, pipeline is set up at the left and right sides of sewage conduct Building enclosure, wherein pipeline building enclosure include pipeline enclosure device and hanging wheel device, and the pipeline enclosure device is used to protect Sewage conduct is not destroyed in diaphram wall decentralization process, and the hanging wheel device is used to ensure the steel reinforcement cage energy with pulley Enough vertical decentralizations;
1) pipeline enclosure device is set up in the sewage conduct left and right sides:Two hold-down supports are installed in ground sewage pipeline both sides, adopted Wrapped up with double steel bar mesh sheet from sewage conduct bottom, weld, pour jointly, it is ensured that sewage pipe with the hold-down support of top two upwards Road it is firm;
2) hanging wheel device is set up on the right side of sewage conduct;
Second step, the first step construction after the completion of, make steel reinforcement cage:Steel reinforcement cage should leave in manufacturing process medial end portions with junction block Certain space, the position of conduit is reserved at the intensive position of reinforcing bar;Steel reinforcement cage form uses L-type steel reinforcement cage, in L-type steel muscle Hangs muscle is left in the end of cage, and a steel reinforcement cage pulley is installed at the turning point of L-type steel reinforcement cage, and correction steel wire passes through steel reinforcement cage pulley The position of steel reinforcement cage is corrected;
3rd step, the first step and second step construction after the completion of, the sewage conduct left and right sides carry out groove section excavate forms groove:
1) first grab, position is close on the left of sewage conduct, apart from 150~200mm on the left of sewage conduct;
2) second grab, position is close on the right side of sewage conduct, apart from 150~200mm on the right side of sewage conduct;
3) long-armed digging machine is used, the dregs below sewage conduct is dug out, the soil body is utilized after both sides soil is dug out above sewage conduct The gravity of itself and rain drop erosion effect free-falling;Steel plate is installed additional in the bucket body opposite direction with the bucket of long-armed digging machine, is made Bucket body recycles the stand out between chute forming machine bucket body and bucket body upper end steel wire rope, to sewage conduct one to inclination under sewage conduct Side is translated, and the dregs below pipeline is dug out;
4) chute forming machine is moved to first and grabs position, below the opposite side of sewage conduct, translated to sewage conduct, by sewage conduct The remaining dregs in lower section is grabbed only;
4th step, reinforcement cage hoisting and decentralization
1) steel reinforcement cage decentralization on the left of sewage conduct:Suspension centre is arranged in and is biased against sewage conduct side by steel reinforcement cage when transferring;Work as reinforcing bar When one jiao of cage transfers to bottom land, sewage conduct is bypassed below sewage conduct opposite side with correction steel wire, makes it from sewage conduct Right side gives steel reinforcement cage one lateral pull by hanging wheel device, it is ensured that steel reinforcement cage is vertically transferred to immediately below sewage conduct, and Slurries are maintained at below sewage conduct in decentralization process bracket groove;
2) after the decentralization in place of left side steel reinforcement cage, detected using ultrasonic wave after the I-steel of left side, confirm whether I-steel is vertical, And whether steel reinforcement cage is vertical, then adjusts steel reinforcement cage, until steel reinforcement cage is completely vertical;
3) confirm that left side steel reinforcement cage vertically after decentralization, removes the hanging wheel device on the right side of sewage conduct, by hanging wheel device upper left side steel The correction steel wire winding of muscle cage is transferred on the steel reinforcement cage pulley of right side steel reinforcement cage to steel reinforcement cage on the right side of sewage conduct, when When one jiao of steel reinforcement cage transfers to bottom land, the hangs muscle of adjustment steel reinforcement cage end and the correction steel wire for bypassing steel reinforcement cage pulley, it is ensured that right Side steel reinforcement cage is vertically transferred;
4) confirm that right side steel reinforcement cage vertically after decentralization, in the sewage conduct left and right sides, is drawn by steel reinforcement cage pulley and correction steel wire Dynamic left and right sides steel reinforcement cage, makes both sides steel reinforcement cage linking, it is allowed to joint gap be 300mm;
5th step, treat the decentralization of sewage conduct both sides steel reinforcement cages after the completion of, to ensure that steel reinforcement cage is vertical, using ultrasonic wave in both sides work Detected again after word steel, confirm whether the position of I-steel and steel reinforcement cage is vertical, then adjust steel reinforcement cage, until steel reinforcement cage is complete It is complete vertical;
6th step, concrete cast.
2. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 1, it is special Levy and be, the step 1 of the first step) in, the pipeline enclosure device includes fixed chain bar, pulley steel plate integrated module and bilayer Bar-mat reinforcement module, wherein:Be fixedly mounted pulley steel plate integrated module respectively in the left and right sides of sewage conduct, fixed chain bar with The pulley steel plate integrated module of the sewage conduct left and right sides is welded to connect, double layer bar module sewage conduct is wrapped up after with Pulley steel plate integrated module is connected.
3. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 2, it is special Levy and be, the double layer bar module includes two panels rectangular double-layer bar-mat reinforcement and a piece of arc-shaped double-layer bar-mat reinforcement, wherein:Two panels Rectangular double-layer bar-mat reinforcement is respectively arranged in the left and right sides of sewage conduct, the two ends of arc-shaped double-layer bar-mat reinforcement respectively with two panels rectangle Double layer bar is welded, and sewage conduct is wrapped up;In the end of rectangular double-layer bar-mat reinforcement provided with two nuts.
4. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 3, it is special Levy and be, the pulley steel plate integrated module links steel plate by pulley, straight grappling reinforcing bar, bar-mat reinforcement and cogongrass head is constituted, wherein: Straight grappling reinforcing bar bypasses pulley, and the two ends of straight grappling reinforcing bar reserve the center weldering that identical length links steel plate with bar-mat reinforcement Connect, and two pads link the geometric center of steel plate point-blank with bar-mat reinforcement;And in bar-mat reinforcement link steel plate Steel plate end equidistant is connect on line, apart from reinforcing bar network chain and leaves two cogongrass heads, cogongrass head position and rectangular double-layer bar-mat reinforcement end Nut location it is corresponding.
5. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 3, it is special Levy and be:The width of the rectangular double-layer bar-mat reinforcement is L2, L2Coverage according to construction operation in face of sewage conduct is determined; The length L of the rectangular double-layer bar-mat reinforcement3Meet formula:Wherein:H is sewage conduct buried depth, mm; D is sewage conduct diameter, mm;The thickness of the rectangular double-layer bar-mat reinforcement is d1, d1Take 20~40mm;
The radius R of the arc-shaped double-layer bar-mat reinforcement meets formula:Wherein D is that sewage conduct is straight Footpath, mm;The arc length of the arc-shaped double-layer bar-mat reinforcement is the length L of fixed chain bar1
The fixed chain bar is a steel pipe, and the length of steel pipe is:L1=D+2 × (150~200) mm, D are sewage conduct diameter, mm;Steel pipe it is a diameter of:d0=20mm.
6. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 4, it is special Levy and be, the straight grappling reinforcing bar, its length m meets formula:M=d2+ 20, mm;Wherein d2The thickness of steel plate is linked for bar-mat reinforcement Degree, d2For 20~40mm;
The thickness of the bar-mat reinforcement link steel plate is d2, d2For 20~40, mm;The length of the bar-mat reinforcement link steel plate is rectangle The width L of double layer bar2, mm;The width of bar-mat reinforcement link steel plate is
7. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 3, it is special Levy and be, the deadweight F of the pipeline enclosure device meets formula:
F=α (V1+V2+V3),
In formula:α is the calculated theoretical density of steel, kg/m3, α is 7~8kg/m3
V1For the volume m of fixed chain bar3, V1Formula is calculated as below in satisfaction:
V2For the volume m of double layer bar module3, V2Formula is calculated as below in satisfaction:
V3For the volume m of pulley steel plate integrated module3, V3Formula is calculated as below in satisfaction:
Wherein:The length L of fixed chain bar1, the width L of rectangular double-layer bar-mat reinforcement2, the length L of rectangular double-layer bar-mat reinforcement3, arc pair The radius R of layer bar-mat reinforcement, the diameter d of fixed chain bar0, the thickness of rectangular double-layer bar-mat reinforcement is d1, the thickness of bar-mat reinforcement link steel plate Spend d2
8. a kind of underground continuous wall groove segment design and construction method for riding existing sewage pipe according to claim 7, it is special Levy and be, the deadweight of the pipeline enclosure device
In formula:G is the deadweight of the pipeline overlying soil body, kg;γIt is flatFor the average severe of the pipeline overlying soil body, kN/m3;H is sewage pipe Road buried depth, mm;As F≤G, pipeline building enclosure meets design requirement.
9. a kind of underground continuous wall groove segment design and construction side for riding existing sewage pipe according to claim any one of 1-8 Method, it is characterised in that the step 2 of the first step) in, the hanging wheel device includes pulley module, balance module and steel wire rope, its In:Pulley module is made up of pulley grappling reinforcing bar and hanging wheel pulley, and steel wire rope one end is connected with balance module, pulley grappling reinforcing bar It is connected after bypassing hanging wheel pulley with balance module.
10. a kind of underground continuous wall groove segment design and construction for riding existing sewage pipe according to claim any one of 3-8 Method, it is characterised in that in the 6th step, using the method laterally poured during the concreting, for sewage conduct both sides Steel reinforcement cage seam crossing casting concrete, at casting concrete in sewage conduct bottom range to arc-shaped double-layer bar-mat reinforcement;Institute Strength grade of concrete is stated for C30, the ratio of mud is not less than 0.6.
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