CN105672251A - Construction method of underground diaphragm wall trench section for bestriding conventional sewage pipe - Google Patents
Construction method of underground diaphragm wall trench section for bestriding conventional sewage pipe Download PDFInfo
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- CN105672251A CN105672251A CN201610070507.3A CN201610070507A CN105672251A CN 105672251 A CN105672251 A CN 105672251A CN 201610070507 A CN201610070507 A CN 201610070507A CN 105672251 A CN105672251 A CN 105672251A
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- sewer line
- reinforcement cage
- steel reinforcement
- steel
- pulley
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Abstract
The invention provides a construction method of an underground diaphragm wall trench section for bestriding a conventional sewage pipe. The construction method comprises the following steps: first, a guide wall is constructed; second, a pipeline envelope structure is constructed; third, reinforcement cages are manufactured after the construction in the first step and the construction in the second step are completed; fourth, the trench sections are excavated to form trenches; fifth, the reinforcement cages are lifted and lowered; sixth, after the reinforcement cages on the left side and the right side of the sewage pipe are lowered, in order to ensure that the reinforcement cages on the left side and the right side are vertical, the detecting is conducted by using an ultrasonic wave behind I steels on two sides to determine whether the I steels are vertical and the functional reinforcement cages are vertical or not, and then the reinforcement cages are adjusted till the reinforcement cages on the left side and the right side are completely vertical; and seventh, concrete pouring is conducted. The construction method has the advantages that the construction period is shortened greatly, and the engineering efficiency is improved.
Description
Technical field
The present invention relates to the constructional method in a kind of underground structrue engineering technical field, specifically, it relates to a kind of underground continuous wall groove segment constructional method riding existing waste pipe.
Background technology
In underground structrue engineering construction process, it is big that underground diaphragm wall has structural rigidity, and overall performance is good, has the advantages such as good impermeability and weather resistance simultaneously. Thus, in city underground and underground structure manufacture process, underground diaphragm wall is widely used. But, in underground diaphragm wall construction process, often running into geologic condition complexity, underground water comparatively enriches, pass through the problems such as the existing pipeline in underground, the construction of underground diaphragm wall can be caused serious impact by the existence of the existing pipeline in underground.
When underground diaphragm wall runs into existing underground utilities in construction process, usually can adopt the measure cut and change underground utilities, or underground utilities are displaced to the road surface of expansion temporarily, again underground utilities be moved to original position after underground diaphragm wall has been constructed. But, underground diaphragm wall is such as underground sewer in construction process, and when rainy season set, sewer pipeline cannot carry out cutting changing, and this will seriously affect the construction duration of underground diaphragm wall. Thus, the construction technology inventing a kind of underground continuous wall groove segment riding existing waste pipe has very important engineer applied value.
The retrieval of existing technical literature is found, the existing construction about underground diaphragm wall relates generally to constructing device and the method at underground diaphragm wall seam place, the number of applying for a patent: 201410098282.3, application publication number: CN103835316A, patent name: the joint structure of a kind of coercion underground continuous wall and constructional method; Application number: 201310676753.X, application publication number: CN103726513A, patent name: joint waterproof structure of underground diaphragm wall and constructional method; The number of applying for a patent: 200810038277.8, patent publication No.: CN101591909A, patent name: a kind of in urban construction the construction method of underground continuous wall under underground utilities, this patent readme: " it is an advantage of the invention that and need not move underground utilities in the construction of city underground diaphragm wall; save a large amount of human and material resources, financial resources, and do not block traffic." but; the constructional method of the underground diaphragm wall under underground utilities of the present invention; do not consider the impact of construction period rainfall; simultaneously; also not considering the geologic condition on the stratum under underground utilities, the stratum crushing under underground utilities, when geologic condition is bad; can hinder the construction of underground diaphragm wall, causes serious impact to the construction of underground diaphragm wall.
Summary of the invention
For Problems existing and defect when passing through underground utilities in existing underground diaphragm wall construction process, the present invention proposes a kind of underground continuous wall groove segment constructional method riding existing waste pipe, and described constructional method comprises the following steps:
The first step, the construction leading wall;
1) centered by sewer line, U-shaped stretching steel plate water-seal pile operation side is excavated out;
2) cuttage steel plate water-stopping stake;
3), after steel sheet pile completes, interval arranges horizontal joist steel and supports, and after completing support, is excavated to below at the bottom of sewer line, forms guide groove;
4), after guide groove completes, complete this successively by normal C type construction of guide wall order and lead wall residue construction.
2nd step, pipeline building enclosure are constructed:
1) pipeline enclosure device is set up at sewer line left and right sides place, in ground sewage pipeline both sides, two stationary bearings are installed, adopt double steel bar mesh sheet from the bottom of waste pipe pipe wrap up, upwards and weld with top two stationary bearing, jointly build, it is ensured that sewer line firm;
2) on the right side of sewer line, hanging wheel device is set up;
3rd step, after the first step and the 2nd step have been constructed, make Steel Reinforcement Cage;
4th step, groove section milling slot;
5th step, reinforcement cage hoisting with transfer;
6th step, after sewer line left and right sides Steel Reinforcement Cage has been transferred, vertical for guaranteeing left and right sides Steel Reinforcement Cage, ultrasonic wave is used again to detect after the joist steel of both sides, confirm that whether joist steel is vertical and whether function Steel Reinforcement Cage is vertical, then Steel Reinforcement Cage is adjusted, until left and right sides Steel Reinforcement Cage is completely vertical;
7th step, concrete depositing.
Preferably, the 1 of 2nd step) in, described pipeline enclosure device comprises fixing chain bar, pulley steel plate integration module and double layer bar module, it connects pass: fixedly mount pulley steel plate integration module respectively in the left and right sides of sewer line, fixing chain bar module integrated with the pulley steel plate connecting the sewer line left and right sides is welded to connect, and double layer bar module is by model calling integrated with pulley steel plate after sewer line parcel.
More preferably, described fixing chain bar is a steel pipe, and its length is: sewer line diameter+2 × (150～200) mm.
More preferably, described pulley steel plate integration module is made up of pulley, straight grappling reinforcing bar and reinforcing mat link steel plate, wherein: pulley walked around by straight grappling reinforcing bar, straight grappling reinforcing bar two ends reserve the center weld that identical length and reinforcing mat link steel plate, and the geometric centre that two welds and reinforcing mat link steel plate is point-blank; On the center line of reinforcing mat link steel plate, apart from reinforcing mat link steel plate end, equidistant leaves two cogongrass heads;
Described straight grappling reinforcing bar is Φ 20 reinforcing bar, and its length is 120mm;
Described reinforcing mat link steel plate is the steel plate that 20～40mm is thick, and its length is the width of the rectangular double-layer reinforcing mat in double layer bar module, width is 30～50mm.
More preferably, described double layer bar module is by 2 rectangular double-layer reinforcing mats and 1 arc-shaped double-layer reinforcing mat, wherein: 2 rectangular double-layer reinforcing mats are installed on the left and right sides of sewer line respectively, the two ends of arc-shaped double-layer reinforcing mat are welded with 2 rectangular double-layer reinforcing mats respectively, sewer line is wrapped up, there are two nuts the end of rectangular double-layer reinforcing mat, and the cogongrass head position that nut location links steel plate with reinforcing mat is corresponding;The distance of the rectangular double-layer reinforcing mat distance sewer line of the waste pipe left and right sides is 150～200mm, and the distance bottom arc-shaped double-layer reinforcing mat distance sewer line is 500mm;
The length of described rectangular double-layer reinforcing mat be sewer line buried depth+sewer line radius+500mm, width depending on construction operation in the face of the range of influence of sewer line is determined;
The radius of described arc-shaped double-layer reinforcing mat is: sewer line radius+(150～200) mm.
Preferably, the 2 of 2nd step) in, described hanging wheel device is made up of pulley module, balance module and wireline, wherein: pulley module is made up of pulley grappling reinforcing bar and hanging wheel pulley, wireline one end and balance module are by being welded to connect, and pulley grappling reinforcing bar is welded to connect with balance module after walking around hanging wheel pulley.
Preferably, in the 3rd step, described Steel Reinforcement Cage leaves the space of 150～200mm at making processes medial end portions and joint pipe, reserves the position of conduit at the position that reinforcing bar is intensive;
Described Steel Reinforcement Cage form adopts L-type Steel Reinforcement Cage, leaves in the end of L-type Steel Reinforcement Cage and hangs muscle, installs a pulley at the weight break point place of L-type Steel Reinforcement Cage, and the position of Steel Reinforcement Cage is corrected by correction steel wire by pulley.
Preferably, in the 4th step, comprise the steps:
1) first grabbing, position is close on the left of sewer line, 150～200mm on the left of distance sewer line;
2) the 2nd grabbing, position is close on the right side of sewer line, 150～200mm on the right side of distance sewer line;
3) with long-armed digging machine, the dregs below sewer line is dug out; Above sewer line, the soil body is after both sides soil digs out, and utilizes himself gravity and rainwater souring free-falling; Adding cartridge plate at the bucket body reverse direction digging bucket with long-armed digging machine, bucket body is had a down dip to sewer line, the width between recycling chute forming machine bucket body and bucket body upper end wireline is poor, to the translation of sewer line side, is dug out by the dregs below sewer line;
4) chute forming machine shifting is grabbed position to first, from another side-lower of sewer line, to sewer line translation, dregs remaining below sewer line is grabbed only.
Preferably, in the 5th step, comprise the steps:
1) on the left of sewer line, Steel Reinforcement Cage is transferred: will hang when Steel Reinforcement Cage is transferred and a little be arranged in partially by sewer line side; When Steel Reinforcement Cage one jiao transfers to bottom land, sewer line is walked around from another side-lower of sewer line with correction steel wire, make its on the right side of sewer line by hanging wheel device to Steel Reinforcement Cage lateral pull, ensure that Steel Reinforcement Cage is vertically transferred to immediately below sewer line, and in process middle slot, slurries remain on below sewer line below Steel Reinforcement Cage;
2) after left side Steel Reinforcement Cage is transferred and put in place, it may also be useful to ultrasonic wave detects after the joist steel of left side, confirm that whether joist steel is vertical and whether function Steel Reinforcement Cage is vertical, then adjust Steel Reinforcement Cage, until Steel Reinforcement Cage is completely vertical;
3) after confirming that left side Steel Reinforcement Cage is vertically transferred, remove the hanging wheel device on the right side of sewer line, the correction steel wire of hanging wheel device upper left side Steel Reinforcement Cage is wound on the pulley of right side Steel Reinforcement Cage, Steel Reinforcement Cage on the right side of sewer line is transferred, when Steel Reinforcement Cage one jiao transfers to bottom land, adjust hanging muscle and walking around the correction steel wire of pulley and hanging wheel pulley of Steel Reinforcement Cage end, it is ensured that right side Steel Reinforcement Cage is vertically transferred;
4) after confirming that right side Steel Reinforcement Cage is vertically transferred, in the sewer line left and right sides, pulling left and right sides Steel Reinforcement Cage by pulley and correction steel wire, both sides Steel Reinforcement Cage is connected, the joint gap of permission is 300mm.
Preferably, in the 7th step, adopt the method laterally built during described concrete placement, for Steel Reinforcement Cage seam place, sewer line both sides casting concrete, for casting concrete in sewer line bottom range to arc-shaped double-layer reinforcing mat place;
Described strength grade of concrete is C30, and water cement ratio is not less than 0.6.
The present invention compared with prior art, has following useful effect:
The method of the invention efficiently solves during rainy season construction, and the problem of sewer pipeline place constructional difficulties met by underground diaphragm wall, act on the principle of efficient, economy, environmental protection, substantially reduce the construction duration in whole construction process, it is to increase engineering efficiency.
Accompanying drawing explanation
By reading with reference to the detailed description that the underground continuous wall groove segment constructional method embodiment riding existing waste pipe is done by the following drawings, the other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the waste pipe line distribution figure that one embodiment of the invention relates to;
Fig. 2 is one embodiment of the invention pipeline enclosure device and hanging wheel device schematic diagram;
Fig. 3 is one embodiment of the invention pulley steel plate integration left diagrammatic cross-section of module;
Fig. 4 is one embodiment of the invention left diagrammatic cross-section of rectangle reinforcing mat;
Fig. 5 is one embodiment of the invention fabrication of reinforcing cage schematic diagram;
Fig. 6 grabs groove schematic diagram below one embodiment of the invention pipeline;
Fig. 7-a and Fig. 7-b is 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 fixing chain bar, and 2-1 is pulley, and 2-2 is straight grappling reinforcing bar, 2-3 is reinforcing mat link steel plate, and 2-4 is cogongrass head, and 3-1 is reinforcing mat chain connected nut, 3-2 is rectangular double-layer reinforcing mat, and 3-3 is arc-shaped double-layer reinforcing mat, and 4 for hanging muscle, 5 is Steel Reinforcement Cage pulley, 6 is correction steel wire, and 7-1 is pulley grappling steel wire, and 7-2 is hanging wheel pulley, 8 is balance module, and 9 is wireline.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail. The technician contributing to this area is understood the present invention by following examples further, but does not limit the present invention in any form. It should be appreciated that to those skilled in the art, without departing from the inventive concept of the premise, it is also possible to make some distortion and improvement. These all belong to protection scope of the present invention.
For certain subway line, sewer line involved in the present embodiment is 2m, diameter 1.65m for single root length, buries and is about 6m depths in underground, and the existence of this sewer line affects the construction of 4-73 width ground-connecting-wall. Sewer line distribution plan is as shown in Figure 1.
Ride a constructional method for the underground continuous wall groove segment of existing waste pipe when rainy season set, specifically it be implemented as follows:
The first step, the construction leading wall, concrete:
1) the U-shaped stretching steel plate water-seal pile operation side that to excavate out the 4m*9m degree of depth centered by sewer line be 1m;
2) cuttage stake footpath is 400mm steel sheet pile, and the degree of depth is 12m, and scope is 4m*9m;
3), after steel sheet pile completes, degree of depth 1m position establish horizontal 200mm joist steel to support together according at interval of 1.5m, after completing support, it may also be useful to long-armed digging machine is excavated to the place of 1m below at the bottom of sewer line, is as the criterion with undisturbed soil;
4), after guide groove completes, complete this successively by normal C type construction of guide wall order and lead wall residue construction.
2nd step, pipeline building enclosure construction (pipe-line maintenance structure comprises pipe-line maintenance device and hanging wheel device) are concrete:
1) pipeline enclosure device is set up at sewer line left and right sides place, in ground sewage pipeline both sides, two stationary bearings are installed, adopt double steel bar mesh sheet from the bottom of waste pipe pipe wrap up, upwards and weld with top two stationary bearing, jointly build, it is ensured that sewer line firm;
As shown in Figure 2, as an optimal way, described pipeline enclosure device comprises fixing chain bar 1, pulley steel plate integration module and double layer bar module, it connects pass: fixedly mount pulley steel plate integration module respectively in the left and right sides of sewer line, fixing chain bar 1 module integrated with the pulley steel plate of the sewer line left and right sides is welded to connect, and double layer bar module is by model calling integrated with pulley steel plate after sewer line parcel.
As shown in Figure 2, described fixing chain bar 1 is a steel pipe, and steel pipe length is: sewer line diameter+2 × (150～200) mm.
As shown in Figure 3, described pulley steel plate integration module is made up of pulley 2-1, straight grappling reinforcing bar 2-2, reinforcing mat link steel plate 2-3, cogongrass head 2-4, wherein: straight grappling reinforcing bar 2-2 walks around pulley 2-1, straight grappling reinforcing bar 2-2 two ends reserve the center weld that identical length and reinforcing mat link steel plate 2-3, and the geometric centre that two welds and reinforcing mat link steel plate 2-3 is point-blank; On the center line of reinforcing mat link steel plate 2-3, apart from reinforcing mat link steel plate 2-3 end, equidistant leaves two cogongrass head 2-4.
As an optimal way, described straight grappling reinforcing bar 2-2 is Φ 20 reinforcing bar, and its length is 120mm; Described reinforcing mat link steel plate 2-3 is the steel plate that 20～40mm is thick, and its length is the width of rectangular double-layer reinforcing mat 3-2, width is 30～50mm.
As shown in Figure 2, Figure 4 shows, as an optimal way, described double layer bar module 3 is made up of reinforcing mat chain connected nut 3-1,2 rectangular double-layers reinforcing mat 3-2 and 1 arc-shaped double-layer reinforcing mat 3-3, wherein: 2 rectangular double-layer reinforcing mat 3-2 are installed on the left and right sides of sewer line respectively, the two ends of arc-shaped double-layer reinforcing mat 3-3 are welded with 2 rectangular double-layer reinforcing mat 3-2 respectively, are wrapped up by sewer line; Two reinforcing mat chain connected nut 3-1 are had, and link the position of steel plate cogongrass head 2-4 with reinforcing mat corresponding in the position of reinforcing mat chain connected nut 3-1 in the end of rectangular double-layer reinforcing mat 3-2; The distance of the rectangular double-layer reinforcing mat 3-2 distance sewer line of the sewer line left and right sides is 150～200mm, and the distance bottom arc-shaped double-layer reinforcing mat 3-3 distance sewer line is 500mm; The length of rectangular double-layer reinforcing mat 3-2 is 5.2m, width is 1.8m, and the radius of arc-shaped double-layer reinforcing mat 3-3 is 975mm.
2) on the right side of sewer line, hanging wheel device is set up:
As shown in Figure 2, as an optimal way, described hanging wheel device is made up of pulley module, balance module 8 and wireline 9, wherein: pulley module is made up of pulley grappling reinforcing bar 7-1 and hanging wheel pulley 7-2, one end of wireline 9 and balance module 8 are by being welded to connect, and pulley grappling reinforcing bar 7-1 walks around hanging wheel pulley 7-2 and balance module 8 is welded to connect.
As an optimal way, described pulley grappling reinforcing bar 7-1 is Φ 20 reinforcing bar, and its length is 120mm.
As an optimal way, described balance module 8 is a rectangular steel plates, adopts Q235 steel, its long for 300mm, width be 200mm, thick be 100mm.
As an optimal way, the length of described wireline 9 is 5.2m, model be 6 × 19+1 (wherein 6 represent around become wireline number of share of stock, 19 represent per share in steel wire number, 1 represents centre hemp core).
After 3rd step, the first step and the 2nd step have been constructed, make Steel Reinforcement Cage:
Described Steel Reinforcement Cage should leave the space of 150～200mm at making processes medial end portions and joint pipe, reserves the position of conduit at the position that reinforcing bar is intensive;Described Steel Reinforcement Cage form adopts L-type Steel Reinforcement Cage, and L-type Steel Reinforcement Cage end is left and hung muscle 4, installs a Steel Reinforcement Cage pulley 5 at the weight break point place of L-type Steel Reinforcement Cage, and the position of Steel Reinforcement Cage can be corrected by correction steel wire 6 by Steel Reinforcement Cage pulley 5, as shown in Figure 5.
4th step, groove section milling slot, concrete:
1) first grabbing (see Fig. 6), position is close on the left of sewer line, 150～200mm on the left of distance sewer line, and first to grab width be 2.8m, and the degree of depth is grabbed to-43.21m;
2) the 2nd grabbing (see Fig. 6), position is close on the right side of sewer line, 150～200mm on the right side of distance sewer line, and the 2nd to grab width be 2.8m, and the degree of depth is grabbed to-43.21m;
3) being dug out by the dregs below sewer line with long-armed digging machine, the degree of depth is dug to-13m; Above sewer line, the soil body is after both sides soil digs out, and utilizes himself gravity and rainwater souring free-falling; Cartridge plate is added at the bucket body reverse direction digging bucket with long-armed digging machine, bucket body is had a down dip to sewer line, and the width between recycling chute forming machine bucket body and bucket body upper end wireline is poor, about 50cm, to the translation of sewer line side, from continuing below sewer line to grab downwards to-43.21m;
4) chute forming machine shifting is grabbed position to first, with same principle from another side-lower of sewer line, to sewer line translation, dregs remaining below sewer line is grabbed only, until-43.21m place.
4th step, reinforcement cage hoisting with transfer, concrete:
1) on the left of sewer line, Steel Reinforcement Cage is transferred
To hang when Steel Reinforcement Cage is transferred and a little be arranged in partially by sewer line side; When Steel Reinforcement Cage one jiao transfers to bottom land, sewer line is walked around from another side-lower of sewer line with correction steel wire 6, make its on the right side of sewer line by hanging wheel pulley 7-2 to Steel Reinforcement Cage lateral pull, ensure that Steel Reinforcement Cage is vertically transferred to immediately below sewer line, and slurries should remain on below sewer line in Steel Reinforcement Cage decentralization process middle slot, as shown in Fig. 7-a;
2) after left side Steel Reinforcement Cage is transferred and put in place, it may also be useful to ultrasonic wave detects after the joist steel of left side, confirm that whether joist steel is vertical, and whether function Steel Reinforcement Cage is vertical, then adjusts Steel Reinforcement Cage, until Steel Reinforcement Cage is completely vertical;
3) after confirming that left side Steel Reinforcement Cage is vertically transferred, remove the hanging wheel device on the right side of sewer line, the correction steel wire 6 of hanging wheel device upper left side Steel Reinforcement Cage is wound on the Steel Reinforcement Cage pulley 5 on right side, Steel Reinforcement Cage on the right side of sewer line is transferred, when Steel Reinforcement Cage one jiao transfers to bottom land, adjust hanging muscle 4 and walking around Steel Reinforcement Cage pulley 5 and the correction steel wire 6 of hanging wheel pulley 7-2 of Steel Reinforcement Cage end, it is ensured that right side Steel Reinforcement Cage is vertically transferred, as shown in Fig. 7-b;
4) after confirming that right side Steel Reinforcement Cage is vertically transferred, in the sewer line left and right sides, pulling left and right sides Steel Reinforcement Cage by Steel Reinforcement Cage pulley 5 and correction steel wire 6, both sides Steel Reinforcement Cage is connected, the joint gap of permission is 300mm, as shown in Figure 8.
6th step, after sewer line both sides Steel Reinforcement Cage has been transferred, for guaranteeing that Steel Reinforcement Cage is vertical, it may also be useful to ultrasonic wave again detects after the joist steel of both sides, confirm that whether joist steel is vertical, and whether function Steel Reinforcement Cage is vertical, then adjust Steel Reinforcement Cage, until Steel Reinforcement Cage is completely vertical.
7th step, concrete depositing:
Strength grade of concrete is C30, and water cement ratio is not less than 0.6; The method laterally built is adopted, for Steel Reinforcement Cage seam place, sewer line both sides casting concrete, for casting concrete in sewer line bottom range to arc-shaped double-layer reinforcing mat place during concrete placement.
Further, as an optimal way, after above-mentioned 6th step, it is possible to: after Steel Reinforcement Cage position confirms, as required, the fixing chain bar 1 of pipe-line maintenance device and pulley 2-1 can optionally remove. And then carry out concrete depositing.
Above-described embodiment gives the enforcement details of the constructional method of the underground continuous wall groove segment riding existing waste pipe, efficiently solve during rainy season construction, the problem of sewer pipeline place constructional difficulties met by underground diaphragm wall, whole construction process acts on the principle of efficient, economy, environmental protection, substantially reduce the construction duration, it is to increase engineering efficiency.
Above specific embodiments of the invention are described. It is understood that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect the flesh and blood of the present invention.
Claims (10)
1. one kind rides the underground continuous wall groove segment constructional method of existing waste pipe, it is characterised in that, described constructional method comprises the following steps:
The first step, the construction leading wall:
1) centered by sewer line, U-shaped stretching steel plate water-seal pile operation side is excavated out;
2) cuttage steel plate water-stopping stake;
3), after steel sheet pile completes, interval arranges horizontal joist steel and supports, and after completing support, is excavated to below at the bottom of sewer line, forms guide groove;
4), after guide groove completes, complete this successively by normal C type construction of guide wall order and lead wall residue construction;
2nd step, pipeline building enclosure are constructed:
1) pipeline enclosure device is set up at sewer line left and right sides place, in ground sewage pipeline both sides, two stationary bearings are installed, adopt double steel bar mesh sheet to wrap up from the bottom of waste pipe pipe, upwards weld with top two stationary bearing, jointly build, it is ensured that sewer line firm; Described pipeline enclosure device is not destroyed in ground-connecting-wall decentralization process for the protection of sewer line;
2) on the right side of sewer line, set up hanging wheel device, described hanging wheel device for guaranteeing the Steel Reinforcement Cage with pulley can vertically transfer;
3rd step, after the first step and the 2nd step have been constructed, make Steel Reinforcement Cage;
4th step, at sewer line left and right sides groove section milling slot;
5th step, adopt hanging wheel device by reinforcement cage hoisting and transfer to the bottom land of the sewer line left and right sides of the 4th step;
6th step, after sewer line left and right sides Steel Reinforcement Cage has been transferred, vertical for guaranteeing left and right sides Steel Reinforcement Cage, ultrasonic wave is used again to detect after the joist steel of both sides, confirm that whether joist steel is vertical and whether function Steel Reinforcement Cage is vertical, then Steel Reinforcement Cage is adjusted, until left and right sides Steel Reinforcement Cage is completely vertical;
7th step, concrete depositing.
2. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to claim 1, it is characterized in that, the 1 of 2nd step) in, described pipeline enclosure device comprises fixing chain bar, pulley steel plate integration module and double layer bar module, pulley steel plate integration module is fixedly mounted respectively in the left and right sides of sewer line, fixing chain bar module integrated with the pulley steel plate connecting the sewer line left and right sides is welded to connect, and double layer bar module is by model calling integrated with pulley steel plate after sewer line parcel.
3. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to claim 2, it is characterized in that, described pulley steel plate integration module is made up of pulley, straight grappling reinforcing bar and reinforcing mat link steel plate, wherein: pulley walked around by straight grappling reinforcing bar, straight grappling reinforcing bar two ends reserve the center weld that identical length and reinforcing mat link steel plate, and the geometric centre that two welds and reinforcing mat link steel plate is point-blank;On the center line of reinforcing mat link steel plate, apart from reinforcing mat link steel plate end, equidistant leaves two cogongrass heads.
4. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to claim 2, it is characterized in that, described double layer bar module is by 2 rectangular double-layer reinforcing mats and 1 arc-shaped double-layer reinforcing mat, wherein: 2 rectangular double-layer reinforcing mats are installed on the left and right sides of sewer line respectively, the two ends of arc-shaped double-layer reinforcing mat are welded with 2 rectangular double-layer reinforcing mats respectively, sewer line is wrapped up, there are two nuts the end of rectangular double-layer reinforcing mat, and the cogongrass head position that nut location links steel plate with reinforcing mat is corresponding.
5. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to claim 4, it is characterised in that, the radius of described arc-shaped double-layer reinforcing mat is: pipeline radius+(150～200) mm; The distance of waste pipe left and right sides rectangle reinforcing mat distance waste pipe is 150～200mm, and the distance bottom arch steel net distance sewer line is 500mm.
6. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to claim 1, it is characterized in that, the 2 of 2nd step) in, described hanging wheel device is made up of pulley module, balance module and wireline, wherein: pulley module is made up of pulley grappling reinforcing bar and hanging wheel pulley, wireline one end is connected with balance module, and pulley grappling reinforcing bar is connected with balance module after walking around hanging wheel pulley.
7. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to the arbitrary item of claim 1-6, it is characterized in that, in 3rd step, described Steel Reinforcement Cage leaves the space of 150～200mm at making processes medial end portions and joint pipe, reserves the position of conduit at the position that reinforcing bar is intensive;
Described Steel Reinforcement Cage form adopts L-type Steel Reinforcement Cage, leaves in the end of L-type Steel Reinforcement Cage and hangs muscle, installs a pulley at the weight break point place of L-type Steel Reinforcement Cage, and the position of Steel Reinforcement Cage is corrected by correction steel wire by pulley.
8. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to the arbitrary item of claim 1-6, it is characterised in that, in the 4th step, comprise the steps:
1) first grabbing, position is close on the left of sewer line, 150～200mm on the left of distance sewer line;
2) the 2nd grabbing, position is close on the right side of sewer line, 150～200mm on the right side of distance sewer line;
3) with long-armed digging machine, the dregs below sewer line is dug out; Above sewer line, the soil body is after both sides soil digs out, and utilizes himself gravity and rainwater souring free-falling; Adding cartridge plate at the bucket body reverse direction digging bucket with long-armed digging machine, bucket body is had a down dip to sewer line, the width between recycling chute forming machine bucket body and bucket body upper end wireline is poor, to the translation of sewer line side, is dug out by the dregs below sewer line;
4) chute forming machine shifting is grabbed position to first, from another side-lower of sewer line, to sewer line translation, dregs remaining below sewer line is grabbed only.
9. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to the arbitrary item of claim 1-6, it is characterised in that, in the 5th step, comprise the steps:
1) on the left of sewer line, Steel Reinforcement Cage is transferred: will hang when Steel Reinforcement Cage is transferred and a little be arranged in partially by sewer line side; When Steel Reinforcement Cage one jiao transfers to bottom land, sewer line is walked around from another side-lower of sewer line with correction steel wire, make its on the right side of sewer line by hanging wheel device to Steel Reinforcement Cage lateral pull, ensure that Steel Reinforcement Cage is vertically transferred to immediately below sewer line, and slurries remain on below sewer line in Steel Reinforcement Cage decentralization process middle slot;
2) after left side Steel Reinforcement Cage is transferred and put in place, it may also be useful to ultrasonic wave detects after the joist steel of left side, confirm that whether joist steel is vertical and whether function Steel Reinforcement Cage is vertical, then adjust Steel Reinforcement Cage, until Steel Reinforcement Cage is completely vertical;
3) after confirming that left side Steel Reinforcement Cage is vertically transferred, remove the hanging wheel device on the right side of sewer line, the correction steel wire of hanging wheel device upper left side Steel Reinforcement Cage is wound on the pulley of right side Steel Reinforcement Cage, Steel Reinforcement Cage on the right side of sewer line is transferred, when Steel Reinforcement Cage one jiao transfers to bottom land, adjust hanging muscle and walking around the correction steel wire of pulley and hanging wheel pulley of Steel Reinforcement Cage end, it is ensured that right side Steel Reinforcement Cage is vertically transferred;
4) after confirming that right side Steel Reinforcement Cage is vertically transferred, in the sewer line left and right sides, pulling left and right sides Steel Reinforcement Cage by pulley and correction steel wire, both sides Steel Reinforcement Cage is connected, the joint gap of permission is 300mm.
10. a kind of underground continuous wall groove segment constructional method riding existing waste pipe according to the arbitrary item of claim 1-6, it is characterized in that, in 7th step, the method laterally built is adopted during described concrete placement, for Steel Reinforcement Cage seam place, sewer line both sides casting concrete, for casting concrete in sewer line bottom range to double layer bar module place; Described strength grade of concrete is C30, and water cement ratio is not less than 0.6.
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