CN103225511B - Assembled type pipe jacking rear seat of precast concrete - Google Patents
Assembled type pipe jacking rear seat of precast concrete Download PDFInfo
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- CN103225511B CN103225511B CN201310106759.3A CN201310106759A CN103225511B CN 103225511 B CN103225511 B CN 103225511B CN 201310106759 A CN201310106759 A CN 201310106759A CN 103225511 B CN103225511 B CN 103225511B
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Abstract
The invention provides an assembled type pipe jacking rear seat for precast concrete. The pipe jacking rear seat comprises a plurality of concrete precasting modules, wherein each concrete precasting module mainly comprises one or more first modules and one or more second modules, each first module is a precasting module, and each second module is a cast-in-place module or a precasting module. Reinforced concrete is adopted to produce the modules in advance outside a working well, and the modules are hoisted into a pipe jacking working well and assembled in an overlapping manner to form the pipe jacking rear seat used for pipe jacking construction. The assembled type pipe jacking rear seat provided by the invention is suitable for the pipe jacking rear seats of a circular working well which are not in the same axis and require to jack towards two ends of the working well; and meanwhile, the assembled type pipe jacking rear seat of the precast concrete has the effects of reduction of the integral construction period, capability of recycle, low manufacturing cost and easiness in dismounting, and solves the technical problems that the rear seat stability is not high due to the large rear seat jacking force when jacking with long distance and large aperture after the rear seat with a steel structure is adopted, and steel structure assembly is cumbersome and requires a large amount of welding operation.
Description
Technical field
The present invention relates to pipe jacking construction technique field, particularly relate to a kind of precast concrete assembling push pipe back seat.
Background technology
In jacking construction process, act on the work borehole wall and the work borehole wall rear soil body equably in order to the counter-force of each jacking cylinder thrust making dispersion becomes, generally all need to arrange reacting wall, the thrust of jacking oil cylinder is that on the soil body acted on the work borehole wall and the work borehole wall equably by reacting wall after, in well of therefore working well in jacking construction, the setting of back seat is an important step of jacking construction.In existing a lot of actual jacking construction, rule of thumb carry out often arranging and operating, with certain blindness; often there will be problem, remove not easily as construction terminates back seat, back seat assembling trouble; back seat component is unstable easily to be damaged, and causes many unsafe factors to construction.
In jacking construction, the plane of push pipe back seat must with jacking axis perpendicular, the each oil cylinder of such guarantee back seat make a concerted effort to be positioned on the axis of pipeline, eccentric force or eccentric moment can not be produced, in case reversing appears in tube coupling in jacking construction process, there is sizable benefit to the axial line control of the axial line control of jacking construction particularly long-distance pipe-jacking construction.Not on an axis need in the round-seal reservoir of active well two ends jacking, ensure that the axis in two jacking directions all has certain difficulty with its back seat plane being perpendicular, the arrangement requirement for back seat in well is quite high.Not on an axis need all reserve portal to the active well of active well two ends jacking on two jacking directions, ensure axis and its back seat plane being perpendicular in two jacking directions, when a direction jacking wherein, its back seat will inevitably block the portal in another direction.When a direction jacking completes wherein, when starting the jacking in another direction, the back seat blocking another direction removed by needs, if integral cast-in-situ back seat in well, dismounting gets up quite to bother and material can't reuse.
Existing push pipe back seat or adopt steel concrete integral cast-in-situ in well, or adopt assembling in steel work well, these two kinds of modes have certain defect.Steel concrete integral cast-in-situ push pipe back seat in well, could must start to make after active well completes construction, there will be cause integral construction claim for eot and can only once use cannot reuse that cost is high, push pipe jacking construction complete after the dismounting problem such as not easily.The assembling of steel work push pipe back seat is loaded down with trivial details, and have a large amount of weld jobs, when back seat top, power is excessive, and steel work back seat stability does not have concrete back seat strong, is easily knocked over, even causes even more serious consequence.
Summary of the invention
The invention discloses a kind of precast concrete assembling push pipe back seat, the present invention adopt Prefabricated block technology solution never on an axis need to the problem of jacking construction difficulty in the active well of active well two ends jacking.
The invention provides a kind of precast concrete assembling push pipe back seat, described precast concrete assembling push pipe back seat comprises at least one first module and at least one the second module, described second module installation is on the borehole wall, described first module is placed near described second module and supports push pipe, wherein, described first module is Prefabricated block, and described second module is cast-in-place module or Prefabricated block.
In some embodiments, the material of described first module and described second module is steel concrete.
In some embodiments, described first module is formed by stacking by some templates.
In some embodiments, the limit of the support push pipe of described template is all vertical with push pipe jacking direction.
In some embodiments, described template surface is smooth.
In some embodiments, jacking construction is crossed the middle borehole wall and is provided with reserved portal, and described second module installation is in described reserved portal surrounding, and portal is reserved in not shutoff.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
1) the present invention adopts steel concrete back seat stability strong, is not easily knocked over;
2) be convenient to installing/dismounting between each module of the present invention, and the conversion of the geomery of each module easily;
3) the present invention adopts multiple module flat moulded prefabricated to form, and each module can reuse;
4) the present invention adopts Prefabricated block, is just made by back seat before construction, thus shortens the duration;
5) precast concrete assembling push pipe back seat provided by the invention, can conveniently apply to not need jacking construction in the active well of active well two ends jacking on an axis.
Accompanying drawing explanation
By reference to the accompanying drawings, by hereafter state detailed description, more clearly can understand above-mentioned and other feature and advantage of the present invention, wherein:
Fig. 1 is back seat layout schematic diagram;
Fig. 2 is back seat plan view;
Fig. 3 is back seat sectional view;
Symbol description:
1-first Prefabricated block
2-second Prefabricated block
Cast-in-place or the Prefabricated block of 3-the 3rd
Cast-in-place or the Prefabricated block of 4-the 4th
Cast-in-place or the Prefabricated block of 5-the 5th.
Detailed description of the invention
See the accompanying drawing that the embodiment of the present invention is shown, hereafter in more detail the present invention will be described.But the present invention can realize in many different forms, and should not be construed as by the restriction in the embodiment of this proposition.On the contrary, it is abundant and complete open in order to reach for proposing these embodiments, and makes those skilled in the art understand scope of the present invention completely.In these accompanying drawings, for clarity sake, may be exaggerated size and the relative size in layer and region.
Description 1-3, describes the embodiment of a kind of precast concrete assembling push pipe back seat provided by the invention in detail.Precast concrete assembling push pipe back seat comprises one or more first module and one or more second module, second module installation is on the borehole wall, first module is placed near the second module and is supported push pipe, wherein, first module is Prefabricated block, and the second module is cast-in-place module or Prefabricated block.
Shown in figure 1, for the present invention applies to not need the jacking construction process schematic to the jacking of active well two ends point-blank, portal need be reserved on the push pipe jacking direction of the borehole wall in work progress, on each jacking direction, need two push pipes in the present embodiment, in figure, dotted line represents push pipe.In the present embodiment, precast concrete assembling push pipe back seat comprises the first module and the second module, wherein, first module comprises the first Prefabricated block 1 and the second Prefabricated block 2, second module and comprises the 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5.Wherein, 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 are arranged at the surrounding of reserved portal on the borehole wall, first Prefabricated block 1 and the second Prefabricated block 2 near the 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 place, and the first Prefabricated block 1 and the second Prefabricated block 2 and the 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th contact edge that is cast-in-place or Prefabricated block 5 cooperatively interact.
Concrete, in jacking construction process must to both direction jacking time, the borehole wall of active well all can reserve portal on two jacking directions.3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 can jacking construction cross Cheng Qian well outer prefabricated after hang in active well and assemble, then the surrounding of reserved portal on the borehole wall is arranged at, about the 3rd, cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th shape that is cast-in-place or Prefabricated block 5 are determined according to the borehole wall and reserved portal, guarantee is arranged at the surrounding of reserved portal and does not block portal, does not limit herein; Certainly, 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 also can be directly cast-in-place in jacking construction process, now can be merged into an integral module directly cast-in-place on the borehole wall for the 3rd cast-in-place or Prefabricated block, the 4th cast-in-place or Prefabricated block and the 5th cast-in-place or Prefabricated block, and the position that this integral module reserves portal at the borehole wall is provided with hole through walls.Do not limit about the number of modules included by the second module and its production method in the present embodiment, determine as the case may be.
In the present embodiment, cross Cheng Qian or simultaneously at underground construction, outside well, make the first Prefabricated block 1 and the second Prefabricated block 2.As shown in Figure 3, first Prefabricated block 1 comprises the consistent section mould plate of some shape sizes, second Prefabricated block 2 comprises two consistent section mould plates of some shape sizes, the shape of one section mould plate and two section mould plates is determined according to the angle in push pipe two jacking direction and borehole wall situation, ensure the first Prefabricated block 1 and the second Prefabricated block 2, while or Prefabricated block 3 cast-in-place with the 3rd, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 while contact and coordinate, reduces gap as far as possible; First Prefabricated block 1 and the second Prefabricated block 2 support push pipe while near second module place time, all ensure vertical with push pipe jacking direction.Namely as shown in Figure 1, when the borehole wall jacking in the left side of the borehole wall and to the right of each module installation, the limit that one section mould plate supports push pipe with two section mould plates is all vertical with push pipe jacking direction, when the borehole wall jacking in the right side of the borehole wall and to the left of each module installation, the limit that a section mould plate supports push pipes with two section mould plates is all vertical with push pipe jacking direction.
In the present embodiment, a section mould plate and two section mould plates will ensure surfacing in prefabrication process, and each template can be stacked when hanging in and assembling in well neatly.The thickness of one section mould plate and two section mould plates does not limit herein, but will ensure that driving can easily lift a section mould plate and two section mould plates.
In jacking construction, each module assembled process is as follows:
First Prefabricated block 1 and the second Prefabricated block 2 are built outside well, the 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 is outer prefabricated or directly cast-in-place good in well at well.After each module making is good, first cast-in-place by the 3rd or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 are hung in well by driving, and attach it to borehole wall side and reserve around portal; Hang in well by the some section mould plates included by the first Prefabricated block 1 and the second Prefabricated block 2 and two section mould plates by driving again, by each section mould plate and two section mould plates, near the 3rd, cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 are stacked together successively; Inevitable first Prefabricated block 1 and the second Prefabricated block 2 and the 3rd cast-in-place or Prefabricated block 3, between the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5, certain space can be there is, a small amount of concrete can be filled in space, tamp levelling, certainly also by other measures, do not limit herein.Namely whole push pipe back seat is constituted after first Prefabricated block 1, second Prefabricated block 2, the 3rd cast-in-place or Prefabricated block 3, the 4th cast-in-place or Prefabricated block 4 and the 5th cast-in-place or Prefabricated block 5 install.After the party's jacking construction upwards completes, each module hoisting turn-over is re-assemblied as back seat during another direction jacking.The present invention is under intensity and rigidity meet the prerequisite of construction requirement, prefabricated forming is carried out by after push pipe back seat modularization, make to be convenient between each module install, remove, the shape size of each module also can be determined according to situations such as concrete construction directions, and change shape, size are easy; And push pipe back seat provided by the invention is reusable, cheap; Push pipe back seat ability concrete for making provided by the invention forms, stronger relative to steel work.
Certainly, the present invention not only applies to point-blank not need to the jacking of active well two ends and is in the jacking construction process of two-tube jacking, above embodiment is only citing, same precast concrete assembling push pipe back seat provided by the invention is also used in two construction directions point-blank, also be applicable to, in a series of jacking construction cases such as the work progress of single tube jacking, not limit herein.
In sum, the invention provides a kind of precast concrete assembling push pipe back seat, push pipe back seat is made up of several concrete prefabricated module, mainly comprise one or more first module and one or more second module, first module is Prefabricated block, and the second module is cast-in-place module or Prefabricated block.Adopt steel concrete each module to be made in advance outward at active well, lift overlap in upper pipe working well assemble namely can be used as push pipe back seat use carry out push pipe jacking construction.The present invention be applicable to not on an axis need to the round-seal reservoir push pipe back seat of active well two ends jacking, precast concrete assembling push pipe back seat provided by the invention have shorten the overall duration, can reuse, cost is low, the readily removable effect removed, and solve adopt steel work back seat when long-distance large-caliber jacking its back seat top power greatly thus cause back seat stability not high, and the technical problem of a large amount of weld job of loaded down with trivial details needs assembled by steel work.
Because those skilled in the art should be understood that the present invention can not depart from the spirit or scope of the present invention with many other concrete forms realizations.Although describe embodiments of the invention, the present invention should be understood and should not be restricted to these embodiments, within the spirit and scope of the invention that those skilled in the art can define as appended claims, make change and amendment.
Claims (6)
1. a precast concrete assembling push pipe back seat, it is characterized in that, described precast concrete assembling push pipe back seat comprises at least one first module and at least one the second module, described second module installation is on the borehole wall, described first module is placed near described second module and supports push pipe, wherein, described first module is Prefabricated block, and described second module is cast-in-place module or Prefabricated block.
2. precast concrete assembling push pipe back seat according to claim 1, is characterized in that, the material of described first module and described second module is steel concrete.
3. precast concrete assembling push pipe back seat according to claim 1 and 2, it is characterized in that, described first module is formed by stacking by some templates.
4. precast concrete assembling push pipe back seat according to claim 3, is characterized in that, the limit of the support push pipe of described template is all vertical with push pipe jacking direction.
5. precast concrete assembling push pipe back seat according to claim 4, it is characterized in that, described template surface is smooth.
6. precast concrete assembling push pipe back seat according to claim 1, it is characterized in that, jacking construction is crossed the middle borehole wall and is provided with reserved portal, and described second module installation is in described reserved portal surrounding, and portal is reserved in not shutoff.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310106759.3A CN103225511B (en) | 2013-03-29 | 2013-03-29 | Assembled type pipe jacking rear seat of precast concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310106759.3A CN103225511B (en) | 2013-03-29 | 2013-03-29 | Assembled type pipe jacking rear seat of precast concrete |
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| CN103225511B true CN103225511B (en) | 2015-05-13 |
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| CN103640088B (en) * | 2013-12-16 | 2016-04-27 | 上海市基础工程集团有限公司 | The pulping device of extra long distance super large caliber concrete ceiling coil anti-drag mud and method |
| CN104632230B (en) * | 2014-12-31 | 2017-01-18 | 上海市机械施工集团有限公司 | Rectangular pipe jacking machine outgoing construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3817004A1 (en) * | 1988-05-19 | 1989-11-30 | Dyckerhoff & Widmann Ag | Device for use in the jacking of a construction body through an earth dam or the like |
| CN100501124C (en) * | 2006-09-04 | 2009-06-17 | 上海隧道工程股份有限公司 | Construction method for tunnel contact passage in shield section of underground railway |
| CN202082490U (en) * | 2011-06-01 | 2011-12-21 | 浙江九峰建设有限公司 | Reverse push bench |
| CN102313078B (en) * | 2011-08-25 | 2012-11-14 | 上海城建市政工程（集团）有限公司 | Construction method for curve steel pipe jacking |
| CN202302301U (en) * | 2011-09-26 | 2012-07-04 | 中国石油天然气集团公司 | Steel pipe cap used for top pipe in silty sand district |
| CN102777189B (en) * | 2012-08-09 | 2015-09-16 | 中铁城建集团北京工程有限公司 | A kind of ultra-long tube curtain non-relay jacking construction device and method |
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