CN103132539A - Construction method of underground continuous wall connector cutting - Google Patents
Construction method of underground continuous wall connector cutting Download PDFInfo
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- CN103132539A CN103132539A CN2011103937991A CN201110393799A CN103132539A CN 103132539 A CN103132539 A CN 103132539A CN 2011103937991 A CN2011103937991 A CN 2011103937991A CN 201110393799 A CN201110393799 A CN 201110393799A CN 103132539 A CN103132539 A CN 103132539A
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Abstract
The invention relates to a construction method of underground continuous wall connector cutting. The method comprises the steps: 1, dividing floor wall construction slot sections of the connector cutting; 2, carrying out construction on a guide wall; 3, carrying out first-stage construction on the slot sections; 4, carrying out second-stage construction on the slot sections: when the second-stage construction on the slot sections is conducted, setting a guide section on the upper portion, wherein the guide section on the upper portion is achieved through arrangement of inserting boards on two sides when the first-stage construction on the slot section is conducted, the thickness of each inserting board is equal to the thickness of the connector cutting, the length of each inserting board is 6-7m; carrying out direct cutting on the first-stage slot section with concrete cutting strength of 7d-14d by a slot milling machine along the guide direction on the upper portion, carrying out connector cleaning after the second-stage slot section is finished, and painting a wall repeatedly up and down by a steel wire brush. Compared with connector types, including a flexible connector, a rigid connector and a prefabricated connector, of a traditional underground continuous wall, the connector cutting machine method is used for directly cutting concrete which is formed into the slot section by utilization the fact that the slot milling machine has the capacity to directly cutting hard rocks, and an underground continuous wall connector which is good in water stopping effect and compact is formed under the situation that a lock pipe and a connector box are not adopted.
Description
Technical field
The present invention relates to a kind of construction method of underground continuous wall, particularly a kind of the employing for the super dark underground space construction of diaphragm wall of Large Infrastructure Projects construction and city overlapped the job practices of milling joint.
Background technology
Diaphragm wall is to utilize various trench machines, by means of the retaining wall effect of mud, digs out narrow and dark groove underground, and pour into a mould suitable material within it and form have together antiseepage (water), the continuous underground wall body of gear soil and weight-bearing function.
Introduce China from last century, through the development of decades, the Diaphragm Wall of conventional joint form is comparative maturity.1958, at first China water power department built the dam impervious wall at pellet rim of the mouth, Qingdao reservoir with this technology, and up to the present, technique has all successively been used in national most provinces.Diaphragm wall and has replaced a lot of traditional job practicess, and is used to a lot of aspects of Foundation Design.By the many new technologies of application, new equipment and new material, be used as more and more now the part of works or be used as agent structure, last decade more is used in large-scale deep-foundation pit engineering.
Increase in demand along with aspects such as the growing of urban construction and Large Infrastructure Projects construction, construction depth and sealing performance to underground diaphragm wall have proposed more and more higher requirement, but and the joint problem is the key factor of restriction diaphragm wall construction depth and sealing performance always.Compare the traditional jointing form, but the diaphragm wall that adopts cover to mill joint all there is being the breakthrough of matter aspect construction depth and sealing performance.On the one hand, need not to adopt the joint case because cover mills joint, broken through conventional ground wall degree of depth restriction, can construct surpasses the degree of depth of hundred meters.On the other hand, directly cut first phase groove section during due to the second stage of groove section construction, can form fresh, fine and close concrete surface, sealing performance is excellent.Cover mills the employing of technology, can utilize the lifting of the degree of depth that direct meaning is arranged for the underground space.
Summary of the invention
The present invention will provide a kind of diaphragm wall cover to mill joint construction method, but the method can promote the construction depth of diaphragm wall greatly, and realizes the strong protection to surrounding enviroment, has higher economic implications and social effect.
For achieving the above object, technical scheme of the present invention is:
A kind of diaphragm wall cover mills joint construction method, it is characterized in that, comprising:
1) divide cover and mill joint ground wall construction groove section
Cover is milled joint ground wall be divided into first phase groove section and the second stage of groove section, and the space, wherein, the angle groove section is set to first phase groove section;
2) construction of guide wall
Before construction of diaphragm wall, wall is led in first construction, is used for location and guiding, and what cover milled joint ground wall leads wall thickness than the large 40mm ~ 60mm of ground wall thickness of diaphragm wall;
3) first phase groove section construction
First phase groove section when construction, carry out that groove section termination perpendicular direction degree is controlled and reinforcing cage is spacing; It is definite that termination perpendicular direction degree index is milled thickness according to the second stage of groove section cover, adopts the mode of following the tracks of detection to control; First phase groove section reinforcing cage is spacing to be realized by the mode that limited block is set on reinforcing cage;
4) the second stage of groove section construction
When the second phase, the groove section was constructed, carry out top guide section setting, when the top guide section is constructed by first phase groove section, both sides arrange plate and realize, plate thickness equals cover and mills thickness, plate length 6m ~ 7m, directly cut with the first phase groove section that slotter is 7d ~ 14d along the top guide section to concrete cut intensity, carry out the joint cleaning after the second stage of groove section is completed, adopt wire brush repeatedly to brush up and down wall.
First phase groove section width 6400mm ~ 7200mm, the second stage of groove section width 2800mm, cover mills the overlapping 200mm ~ 300mm of joint location.
Limited block adopts pvc pipe to be processed into, and colligation is in the reinforcing cage end, and with the long limited block of colligation 500mm in every 2500mm scope, it is selected that the limited block caliber mills thickness according to cover: when thickness of cutting was 200mm, the limited block caliber was got 300mm; When thickness of cutting was 300mm, the limited block caliber was got 400mm.
The invention has the beneficial effects as follows:
The joint form of the present invention and traditional diaphragm wall: flexible joint, rigid joint and preparation joint are compared, it is that the ability of utilizing slotter can directly cut hard rock is directly cut the concrete of grooving section that cover mills the joint engineering method, in the situation that do not adopt locking notch pipe, joint case to form good, the fine and close underground continuous wall connector of sealing.
Cover mills joint ground wall and is divided into two kinds, the first phase groove section of constructing in advance, the then the second stage of groove sections of insertion in the middle of two first phase groove sections.
Contrast other traditional type joint, it is as follows that cover mills the joint main advantage:
1. do not need other corollary equipment in the construction, as crane, trivial mouthful of pipe etc.
2. can save the Master Costs such as expensive i iron or steel plate, reinforcing cage weight saving, can adopt the less crane of tonnage simultaneously, reduces construction cost and be beneficial to building site moving-wire arrangement.
3. no matter first phase or the second stage of groove excavate or during fluid concrete, all without digging in advance the district, and can pour at full speed without circumferential motion problem, guarantee joint quality and working security.
4. the concrete that when excavating the second stage of groove, Double-wheel milling cover mill off both sides first phase groove has hardened.Fresh and coarse concrete surface forms the good concrete jacket of watertightness and mills joint when the second stage of groove of cast.
Cover mills that but joint ground wall is large due to its construction depth, ground adaptability is wide, under Urban Underground construction and various environment the Large Infrastructure Projects construction aspect have a wide range of applications.
Description of drawings
Fig. 1 is that cover mills connector slot section segmentation schematic diagram;
Fig. 2 is first phase groove section trenching construction figure;
Fig. 3 is that first phase groove section is transferred reinforcing cage and concrete construction figure;
Fig. 4 is the second stage of groove section trenching construction figure;
Fig. 5 is that the second stage of groove section is transferred reinforcing cage and concrete construction figure;
Fig. 6 is the limited block scheme of installation;
Fig. 7 is guiding board plug structure front view;
Fig. 8 is the upward view of Fig. 7;
Fig. 9 is guiding board plug structure sectional elevation.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Diaphragm wall cover of the present invention mills joint construction method, comprising:
1) divide cover and mill joint ground wall chase section
Cover is milled joint ground wall be divided into first phase groove section 1 and the second stage of groove section 1, space; First phase groove section 1 width 6400mm ~ 7200mm, the second stage of groove section 2 width 2800mm, the overlapping 3(Fig. 3 of joint location) cut thickness for 200mm ~ 300mm(overlaps milling).The angle groove section should be set to first phase groove section.Referring to Fig. 1, cover mills connector slot section Division range design.
2) cover mills the joint construction process
Cover mills that joint ground wall is divided into first phase groove section 1 and the second stage of groove section 2 is successively constructed, the first phase groove section 1 of constructing in advance, the second stage of groove section 2 of rear construction.Before 2 constructions of second phase groove section, must guarantee that bilateral first phase groove section 1 all constructed complete.Referring to Fig. 2 to Fig. 5, the Specific construction flow process is:
(1) first phase groove section 1 grooving (Fig. 2)
(2) first phase groove section 1 is transferred reinforcing cage and concreting (Fig. 3)
(3) the second stage of groove section 2 trenching constructions, fresh concrete during construction, that first phase groove section 1 joint is outer machines away, and forms fresh, fine and close ground wall joint (Fig. 4)
(4) the second stage of groove section 2 is transferred reinforcing cage and concreting (Fig. 5)
3) first phase groove section reinforcing cage stop 4
For guaranteeing that the second stage of groove section 2 cuts smoothly, first phase groove section 1 reinforcing bar must accurately be laid and be reliably spacing.First phase groove section 1 reinforcing cage is spacing to be realized by the mode that limited block 4 is set on reinforcing cage 5, as shown in Figure 6.Limited block 4 should adopt pvc pipe to be processed into, and colligation is advisable with the long limited block of colligation 500mm in every 2500mm scope in reinforcing cage 5 ends.It is selected that limited block 4 calibers mill thickness according to cover.When thickness of cutting was 200mm, limited block 4 diameters should be got 300mm; When thickness of cutting was 300mm, limited block 4 diameters should be got 400mm; Other are analogized.Fig. 6 limited block installation drawing of taking part in building
4) guiding plate (Fig. 7 to Fig. 9)
During 1 concrete casting of first phase groove section, need respectively to arrange in both sides a joint baffle, concrete casting is completed also and is extracted joint baffle out after initial set, opens to mill for the second stage of groove section to form guiding and spacing.The guiding plate adopts Plate Welding to be processed into, and plate thickness equals cover and mills thickness, plate length 6m ~ 7m.。
5) cover mills the joint optimized cutting time
After bilateral first phase groove section 1 placing of concrete, should reasonably carry out joint cutting construction in the time.According to the concrete strength increasing law, first phase groove section 1 concrete optimized cutting intensity is 7d ~ 14d, and the second stage of groove section 2 of construction is the most economical, efficient within this time period.
Claims (3)
1. a diaphragm wall cover mills joint construction method, it is characterized in that, comprising:
1) divide cover and mill joint ground wall construction groove section
Cover is milled joint ground wall be divided into first phase groove section (1) and the second stage of groove section (2), and the space, wherein, the angle groove section is set to first phase groove section (1);
2) construction of guide wall
Before construction of diaphragm wall, wall is led in first construction, is used for location and guiding, and what cover milled joint ground wall leads wall thickness than the large 40mm ~ 60mm of ground wall thickness of diaphragm wall;
3) first phase groove section (1) construction
First phase groove section (1) when construction, carry out that groove section termination perpendicular direction degree is controlled and reinforcing cage is spacing; It is definite that termination perpendicular direction degree index is milled thickness according to the second stage of groove section (2) cover, adopts the mode of following the tracks of detection to control; First phase groove section reinforcing cage is spacing to be realized by the mode that limited block (4) is set on reinforcing cage (5);
4) the second stage of groove section (2) construction
During second phase groove section (2) construction, carry out top guide section setting, when the top guide section is constructed by first phase groove section (1), both sides arrange plate and realize, plate thickness equals cover and mills thickness, plate length 6m ~ 7m, directly cut with the first phase groove section (1) that slotter is 7d ~ 14d along the top guide section to concrete cut intensity, carry out the joint cleaning after the second stage of groove section (2) is completed, adopt wire brush repeatedly to brush up and down wall.
2. diaphragm wall cover according to claim 1 mills joint construction method, it is characterized in that: described first phase groove section (1) width is 6400mm ~ 7200mm, and the second stage of groove section (2) width is 2800mm, and cover mills joint location overlapping (3) and is 200mm ~ 300mm.
3. diaphragm wall cover according to claim 1 mills joint construction method, it is characterized in that: described limited block (4) adopts pvc pipe to be processed into, colligation is in reinforcing cage (5) end, with the long limited block (4) of colligation 500mm in every 2500mm scope, it is selected that limited block (4) caliber mills thickness according to cover: when thickness of cutting was 200mm, limited block (4) caliber was got 300mm; When thickness of cutting was 300mm, limited block (4) caliber was got 400mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103937991A CN103132539A (en) | 2011-12-02 | 2011-12-02 | Construction method of underground continuous wall connector cutting |
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| CN2011103937991A CN103132539A (en) | 2011-12-02 | 2011-12-02 | Construction method of underground continuous wall connector cutting |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343533A (en) * | 2013-07-02 | 2013-10-09 | 上海市基础工程集团有限公司 | Inserting plate device for underground continuous wall sleeve milling construction |
| CN103898901A (en) * | 2014-04-22 | 2014-07-02 | 上海市基础工程集团有限公司 | Mill wall reinforcing cage positioner |
| CN105220696A (en) * | 2015-09-08 | 2016-01-06 | 上海市基础工程集团有限公司 | Rotating-milling formula deep-layer stirring construction method of enclosure structure |
| CN105625299A (en) * | 2016-03-16 | 2016-06-01 | 中冶集团武汉勘察研究院有限公司 | Wallboard type novel underground continuous wall and construction method thereof |
| CN105625298A (en) * | 2016-03-16 | 2016-06-01 | 中冶集团武汉勘察研究院有限公司 | Underground continuous wall structure adopting glass fiber bar lapping and milling and construction method for underground continuous wall structure |
| CN110042876A (en) * | 2019-04-25 | 2019-07-23 | 浙江易通基础工程有限公司 | The grab bucket of chute forming machine and the method for utilizing the grab bucket Construction Anti-seepage wall |
| CN111042100A (en) * | 2019-12-30 | 2020-04-21 | 广州地铁设计研究院股份有限公司 | Method for assembling prefabricated underground continuous wall |
| CN113668505A (en) * | 2021-08-26 | 2021-11-19 | 上海市基础工程集团有限公司 | Inserting plate device for guiding and installing PVC (polyvinyl chloride) pipes |
| CN118257250A (en) * | 2024-03-28 | 2024-06-28 | 浙江省地矿建设有限公司 | Construction method for double-wheel stirring green construction of prefabricated underground continuous wall |
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| JP2000240076A (en) * | 1999-02-18 | 2000-09-05 | Taisei Corp | How to fix precast concrete formwork to underground concrete wall |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343533A (en) * | 2013-07-02 | 2013-10-09 | 上海市基础工程集团有限公司 | Inserting plate device for underground continuous wall sleeve milling construction |
| CN103898901A (en) * | 2014-04-22 | 2014-07-02 | 上海市基础工程集团有限公司 | Mill wall reinforcing cage positioner |
| CN103898901B (en) * | 2014-04-22 | 2016-01-20 | 上海市基础工程集团有限公司 | Cover milling ground wall reinforcing cage locator |
| CN105220696A (en) * | 2015-09-08 | 2016-01-06 | 上海市基础工程集团有限公司 | Rotating-milling formula deep-layer stirring construction method of enclosure structure |
| CN105625298B (en) * | 2016-03-16 | 2017-09-15 | 中冶集团武汉勘察研究院有限公司 | Using the continuous underground wall structure and its construction method of glass fiber-reinforced polymer lap joint sleeve milling |
| CN105625298A (en) * | 2016-03-16 | 2016-06-01 | 中冶集团武汉勘察研究院有限公司 | Underground continuous wall structure adopting glass fiber bar lapping and milling and construction method for underground continuous wall structure |
| CN105625299A (en) * | 2016-03-16 | 2016-06-01 | 中冶集团武汉勘察研究院有限公司 | Wallboard type novel underground continuous wall and construction method thereof |
| CN110042876A (en) * | 2019-04-25 | 2019-07-23 | 浙江易通基础工程有限公司 | The grab bucket of chute forming machine and the method for utilizing the grab bucket Construction Anti-seepage wall |
| CN110042876B (en) * | 2019-04-25 | 2021-06-08 | 浙江易通特种基础工程股份有限公司 | Method for constructing impervious wall by using grab bucket of trenching machine |
| CN111042100A (en) * | 2019-12-30 | 2020-04-21 | 广州地铁设计研究院股份有限公司 | Method for assembling prefabricated underground continuous wall |
| CN111042100B (en) * | 2019-12-30 | 2022-04-29 | 广州地铁设计研究院股份有限公司 | Method for assembling prefabricated underground continuous wall |
| CN113668505A (en) * | 2021-08-26 | 2021-11-19 | 上海市基础工程集团有限公司 | Inserting plate device for guiding and installing PVC (polyvinyl chloride) pipes |
| CN113668505B (en) * | 2021-08-26 | 2022-08-30 | 上海市基础工程集团有限公司 | Inserting plate device for guiding and installing PVC (polyvinyl chloride) pipes |
| CN118257250A (en) * | 2024-03-28 | 2024-06-28 | 浙江省地矿建设有限公司 | Construction method for double-wheel stirring green construction of prefabricated underground continuous wall |
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Application publication date: 20130605 |