CN102691415B - Bridge embedded part and method for mounting bridge using bridge embedded part - Google Patents
Bridge embedded part and method for mounting bridge using bridge embedded part Download PDFInfo
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- CN102691415B CN102691415B CN201210163726.8A CN201210163726A CN102691415B CN 102691415 B CN102691415 B CN 102691415B CN 201210163726 A CN201210163726 A CN 201210163726A CN 102691415 B CN102691415 B CN 102691415B
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Abstract
The invention relates to a bridge embedded part which comprises four plates. The four plates extend longitudinally and form a rectangular frame. A bridge threaded connecting hole is reserved on at least one plate. A bending part is disposed on the bottom of at least one plate. The bending part transversely extends outwardly. By the aid of the structure, the bending part of the bridge embedded part is fixed onto a construction formwork before hole pouring of the bridge embedded part, the formwork does not need to be removed after concrete pouring, a bridge mounting hole is integrated with the concrete, construction of the bridge mounting hole is facilitated, the inner wall of the bridge mounting hole is neat, and the bridge mounting hole is fine in construction quality.
Description
Technical field
The present invention relates to the apparatus and method that a kind of crane span structure is installed, especially a kind of for having assisted the crane span structure built-in fitting that crane span structure installs in vertical shaft hole and the method for utilizing this crane span structure installation of embedded parts crane span structure.
Background technology
The mounting method of cable testing bridge be mainly divided into along mounting of roof plate, along wall level install, along vertical shaft installation etc.
In engineering house and office main building, every layer is provided with distribution well, and each layer of distribution well location put unification, in distribution well, there are some buses and cable testing bridge, due to limited space in distribution well, and all need through-flooring to lay, conventionally need to adopt the method installing cables crane span structure of installing along vertical shaft.
Existing method is: make after hole reservation mould by bamboo offset plate or woodwork plate, build the rest size reserving hole of adaptation mutually forming with cable testing bridge, and the manual hole reservation mould of removing, and crane span structure is bolted together in reserving hole, mainly comprise following step: determine hole to be provided size → make formwork for placing → concreting → stripping → cleaning hole → erection bridge → crane span structure perforate → crane span structure distribution (i.e. installing wire, cable in crane span structure) according to the size of reserving hole.
Above-mentioned cable testing bridge, along vertical shaft mounting method, mainly has the following disadvantages:
1, use bamboo offset plate or woodwork plate to make hole reservation mould, after concreting, need to remove separately, complex operation and increased construction cost.
2, after crane span structure installs, enter the perforate of crane span structure corresponding site at spool, be convenient to electrical line setting, but workman is cumbersome in the time of operation, easily occurs irregular hole.And the later stage when threading electric wire or cable easily pull open insulated hull at crane span structure perforate position, cause unnecessary doing over again.
Summary of the invention
The technical problem that the present invention solves is to overcome the above-mentioned deficiency of prior art, provide a kind of: easy for installation, speed of application is fast, construction quality is better, and built after concrete without the disposable reserved crane span structure built-in fitting construction method of form removal separately, and one makes, and crane span structure is easy for installation, crane span structure built-in fitting efficiently.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of crane span structure built-in fitting, comprises four plate bodys, and described four plate bodys all longitudinally extend, described four plate bodys enclose formation rectangle frame, on at least one plate body, be provided with crane span structure threaded connection hole, the bottom of at least one plate body is provided with bending, and described bending is along laterally extending laterally.Adopt such structure, crane span structure built-in fitting is before hole is built, be fixed in civil engineering template by the bending that is arranged at bottom, after concreting without remove, with concrete shape all-in-one-piece crane span structure install hole, be convenient to crane span structure the construction of hole is installed, and crane span structure is installed, and hole inner wall shape is regular, construction quality good.
Preferably, in described bending, be vertically arranged with threaded connection hole.Be connected with the bottom thread of civil engineering template by the threaded connection hole in bending, can further ensure the verticality of hole, improve crane span structure installation accuracy and qualification rate.
Preferably, be provided with the entrance hole for cross-under cable therein on a plate body, described entrance hole runs through plate body.Adopt such structure, be conducive to the layout of cable.
Preferably, the inside of described rectangle frame is provided with at least one support bar, and the two ends of described support bar and the inwall of plate body are closely connected.Support bar props up plate body at crane span structure built-in fitting as liner, and can prevent from building time, the distortion of crane span structure built-in fitting, improves construction precision and yield rate.
Preferably, the quantity of described support bar is two, and the two ends of the described two support bars respectively plate body relative with two of rectangle frame connect.By prop up plate body with support bar in crane span structure built-in fitting, can prevent from building time, the distortion of crane span structure built-in fitting, improves construction precision and yield rate.
A method of utilizing above-mentioned crane span structure installation of embedded parts crane span structure, comprises the following steps:
A, making crane span structure built-in fitting:
B, crane span structure built-in fitting location and installation: pass threaded connection hole with bolt crane span structure built-in fitting and cast-in-place structural template are fixed;
C, concreting; At the peripheral concreting of crane span structure built-in fitting, and form reserving hole herein;
D, connection crane span structure and crane span structure built-in fitting: pass crane span structure threaded connection hole with bolt crane span structure built-in fitting and crane span structure are fixed.
Adopt such method, construction technology is easy, progress is fast, reserving hole disposal molding gets final product erection bridge, reduce the past when adopting plank Mold Making reserved opening, that the operations such as form removal cause is artificial, material and the loss in man-hour, and can cut off concrete by crane span structure built-in fitting, make hole there is the more regular inwall of shape, construction quality is better, can avoid follow-up threading time, electric wire or cable scratch at hole inwall, and without manually picking separately the mouth that burrows, reduce labour intensity, and improved efficiency of construction after concrete is fixed.
Preferably, before described step c, two support bars are set in the inside of crane span structure built-in fitting, the two ends of the two support bars respectively plate body relative with two of rectangle frame connect.
As preferably, in above-mentioned crane span structure built-in fitting, on described crane span structure threaded connection hole, be provided with seal, described seal and crane span structure threaded connection hole removably connect.Adopt such structure, before building, crane span structure threaded connection hole is crammed, can avoid concrete to pour into crane span structure threaded connection hole, be convenient to follow-up being threaded, improve and connect precision and joint efficiency; Before building, entrance hole is crammed, can be avoided spillage, make that the inner duct of entrance hole is level and smooth, burr is few, inner spool is difficult for scratching when mobile.
Preferably, described seal comprises filler and sealing adhesive plaster, and described filler is arranged in crane span structure threaded connection hole, and described fluid sealant cloth is arranged at the both sides of crane span structure threaded connection hole.Before building, crane span structure threaded connection hole is crammed and sealed, can avoid concrete to pour into crane span structure threaded connection hole, be convenient to follow-up being threaded, improve and connect precision and joint efficiency; Before building, entrance hole is crammed and sealed, can avoid spillage, make that the inner duct of entrance hole is level and smooth, burr is few, inner spool is difficult for scratching when mobile.
A method of utilizing above-mentioned crane span structure installation of embedded parts crane span structure, comprises the following steps:
A, making crane span structure built-in fitting;
B, crane span structure built-in fitting location and installation: pass threaded connection hole with bolt crane span structure built-in fitting and cast-in-place structural template are fixed;
C, cram crane span structure threaded connection hole with filler, and seal at the two ends of crane span structure threaded connection hole sticking cloth.
D, concreting;
E, cleaning filler and sealing adhesive plaster;
F, connection crane span structure and crane span structure built-in fitting: pass crane span structure threaded connection hole with bolt crane span structure built-in fitting and crane span structure are fixed.
Adopt such method, before building, crane span structure threaded connection hole is crammed and sealed, can avoid concrete to pour into crane span structure threaded connection hole, be convenient to follow-up being threaded, improve and connect precision and joint efficiency; Before building, entrance hole is crammed and sealed, can avoid spillage, make that the inner duct of entrance hole is level and smooth, burr is few, inner spool is difficult for scratching when mobile.
Preferably, after step f, in crane span structure built-in fitting, fire barrier is installed, and at the upper filling fire prevention calking of fire barrier, fire prevention calking is positioned at the At The Height of crane span structure built-in fitting inside, cast-in-place structural template.In crane span structure built-in fitting, set up one deck fireproof partition similar to cast-in-place structural template thickness.
Compared with prior art, beneficial effect of the present invention is as follows:
1, while adopting above-mentioned crane span structure installation of embedded parts crane span structure, construction technology is easy, progress is fast, reserving hole disposal molding gets final product erection bridge, reduce the past when adopting plank Mold Making reserved opening, that the operations such as form removal cause is artificial, material and the loss in man-hour, after concrete is fixed, without manually picking separately the mouth that burrows, reduces labour intensity, and improved efficiency of construction;
2, construction quality is better, cuts off concrete by crane span structure built-in fitting, makes hole have the more regular inwall of shape, and can avoid follow-up threading time, electric wire or cable scratch at hole inwall.
Brief description of the drawings
Fig. 1 is construction method flow chart of the present invention;
Fig. 2 is the connection diagram of crane span structure built-in fitting in the present invention;
Fig. 3 is the structural representation of crane span structure built-in fitting in the present invention;
Fig. 4 is the front view of crane span structure built-in fitting in the present invention.
Fig. 5 is the lateral view of crane span structure built-in fitting in the present invention;
Fig. 6 is the structural representation of fire barrier in the present invention.
Wherein Reference numeral is as follows: crane span structure-1; Plate body-2; Bending-3; Threaded connection hole-4; Crane span structure threaded connection hole-5; Cast-in-place structural template-6; Entrance hole-7; Fire barrier-8; Fire prevention calking-9; Cable-10; Winding displacement hole-11.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Embodiments of the present invention are not limited to following examples, within the various variations of making under the prerequisite that does not depart from aim of the present invention all belong to protection scope of the present invention.
embodiment 1
As shown in Figure 1 to Figure 3, the present embodiment crane span structure built-in fitting comprises four plate bodys 2, four plate bodys 2 all longitudinally extend, described four plate bodys 2 enclose formation rectangle frame, four plate bodys 2 be mutually alternately connected to form square-section, the frame shaped body that stretches longitudinally, be the hollow cavity of rectangle at rectangle frame middle part, the support shape adaptation of the cavity shape of rectangle frame and crane span structure 1.
In the present embodiment, four plate bodys 2 link together by the mode of welding, in all the other embodiments, also can adopt snapping or the mode that is threaded is fixed.
On a plate body 2, be provided with crane span structure threaded connection hole 5 therein, be provided with bending 3 in the bottom of two opposed plate bodys 2, bending 3 is along laterally extending laterally, form wing limit, in two bendings 3, be all vertically arranged with threaded connection hole 4, be threaded connection hole 4 bending 3 is connected with the bottom thread of civil engineering template, realize the fixing of crane span structure built-in fitting.
In the time of subsequent installation, can be directly between crane span structure threaded connection hole 5 and the screwed hole on crane span structure 1 erection bolt be fixed.
On a pair of non-conterminous two plate bodys 2, be provided with several crane span structure threaded connection holes 5 therein, the quantity of crane span structure threaded connection hole 5 and position and to be arranged at quantity and the position of the installing hole on the support of crane span structure 1 mutually adaptive, in the time of subsequent installation, can be directly between crane span structure threaded connection hole 5 and the installing hole on crane span structure 1 erection bolt be fixed.On a plate body 2, be provided with the entrance hole 7 for cross-under cable 10 therein, described entrance hole 7 runs through plate body 2.
In all the other embodiments, also can only on a plate body 2, crane span structure threaded connection hole 5 be set.
In the manufacturing process of crane span structure built-in fitting, determined in advance size and bore size and the quantity of built-in fitting according to the size of cast-in-place structural template 6 thickness, crane span structure 1, spool model, ensure disposable reserved the putting in place of built-in fitting.
A method of utilizing the present embodiment crane span structure installation of embedded parts crane span structure, comprises the following steps:
A, making crane span structure built-in fitting:
B, crane span structure built-in fitting location and installation: pass threaded connection hole 4 with bolt crane span structure built-in fitting and cast-in-place structural template 6 are fixed;
Refer to Fig. 2 and Fig. 4, the interior erection bolt of threaded connection hole 4 in each bending 3, is fixedly connected with crane span structure built-in fitting with cast-in-place structural template 6.Before installation in position, first hang the method for vertical line by perforate, guarantee the installation verticality of crane span structure built-in fitting.
Behind location, spool can be penetrated in crane span structure built-in fitting; On one of them plate body 2 of crane span structure built-in fitting, offer entrance hole 7, cable 10, spool penetrate to crane span structure built-in fitting by entrance hole 7;
C, concreting;
Concreting, forms the pre-buried hole of crane span structure.After concreting completes, crane span structure built-in fitting is not removed, and fixes the connector of crane span structure as subsequent installation, has reduced the operation of making, stripping in standard practice, and has promoted regularity and the fineness of hole, improves crane span structure positioning precision.
D, connection crane span structure 1 and crane span structure built-in fitting: pass crane span structure threaded connection hole 5 with bolt crane span structure built-in fitting and crane span structure 1 are fixed;
Crane span structure 1 is packed in hole, on the support of crane span structure 1, be provided with installation screwed hole, pass by bolt after the support and crane span structure threaded connection hole 5 of crane span structure 1, crane span structure 1 and crane span structure built-in fitting and concrete hole are fixed;
If if the curtailment of its support when erection bridge 1 can adopt lengthening brace tabular, that two ends are provided with screwed hole to lengthen connection, guarantee that the crane span structure 1 of levels vertical shaft all can be installed and fix.
After crane span structure 1 installation in position, the cable 10 that is positioned at crane span structure built-in fitting inside is entered to crane span structure 1.
Adopt the method erection bridge 1 of the present embodiment, construction technology is easy, progress is fast, after reserving hole disposal molding, get final product direct erection bridge 1, reduce the past when adopting plank Mold Making reserved opening, that the operations such as form removal cause is artificial, material and the loss in man-hour, and can cut off concrete by crane span structure built-in fitting, make hole there is the more regular inwall of shape, fixed later without manually picking separately the mouth that burrows at concrete, reduce labour intensity, construction quality is better, and can avoid follow-up threading time, electric wire or cable scratch at hole inwall.
In all the other embodiments, crane span structure built-in fitting can adopt remaining structure and cast-in-place structural template 6 to reinforce the connection, for example, can indirectly connect crane span structure built-in fitting and cast-in-place structural template 6 by suspension bracket.
In addition, in all the other embodiments, the quantity that is arranged at the threaded connection hole 4 in bending 3 also one, three or more, all can play a part the bottom stable connection of crane span structure built-in fitting and cast-in-place structural template 6, the quantity of threaded connection hole 4 can increase and decrease according to the actual conditions of construction.
embodiment 2
Refer to Fig. 2 to Fig. 4, in the present embodiment crane span structure built-in fitting, the inside of described rectangle frame is provided with support bar, the inwall of the two ends of described support bar and plate body 2 is closely connected, the quantity of described support bar is two, the two ends of the two support bars respectively plate body 2 relative with two of rectangle frame connect, and two non-conterminous plate bodys 2 are shored and propped, in the criss-cross structure of shoring of the inner formation of crane span structure built-in fitting, in order to support crane span structure built-in fitting, while preventing from building, the distortion of crane span structure built-in fitting, improves construction precision and yield rate.
All the other structures refer to embodiment 1.
A method of utilizing the present embodiment crane span structure installation of embedded parts crane span structure, comprises the following steps:
A, making crane span structure built-in fitting:
B, crane span structure built-in fitting location and installation: pass threaded connection hole 4 with bolt the cast-in-place structural template in crane span structure built-in fitting and distribution wellhole hole 6 is fixed; Again cable 10 is penetrated in crane span structure built-in fitting;
C, two support bars are set in the inside of crane span structure built-in fitting, the two ends of the two support bars respectively plate body 2 relative with two of rectangle frame connect.
D, concreting;
E, connection crane span structure 1 and crane span structure built-in fitting: pass crane span structure threaded connection hole 5 with bolt crane span structure built-in fitting and crane span structure 1 are fixed, and crane span structure 1 is carried out to distribution, at the interior installing wire of crane span structure 1, cable.
All the other steps in the method for employing the present embodiment crane span structure installation of embedded parts crane span structure refer to embodiment 1.
embodiment 3
As shown in Figures 1 to 4, in the present embodiment crane span structure built-in fitting, on described crane span structure threaded connection hole 5, be provided with seal, described seal and crane span structure threaded connection hole 5 removably connect.By crane span structure threaded connection hole 5 being crammed before building, avoid concrete to pour into crane span structure threaded connection hole 5, be convenient to follow-up being threaded, improve and connect precision and joint efficiency; Described seal comprises filler and sealing adhesive plaster, and described filler is arranged in crane span structure threaded connection hole 5, and described fluid sealant cloth is arranged at the both sides of crane span structure threaded connection hole 5.
Simultaneously, on entrance hole 7, be provided with seal, described seal and entrance hole 7 removably connect, and seal comprises filler and sealing adhesive plaster, described filler is arranged in crane span structure threaded connection hole 5, and described fluid sealant cloth is arranged at the both sides of crane span structure threaded connection hole 5.Before building, entrance hole 7 is crammed and sealed, can avoid spillage, make that the inner duct of entrance hole 7 is level and smooth, burr is few, inner spool is difficult for scratching when mobile.
In all the other embodiments, the seal being arranged in crane span structure threaded connection hole 5 or entrance hole 7 can be also to have double-screw bolt or the bolt suitable with crane span structure threaded connection hole 5 internal threads, fills sealing before concreting; Or fill in the mode of foam stuffing, and can play equally the effect of spillage while preventing concreting, just repeat no more at this.
A method of utilizing the present embodiment crane span structure installation of embedded parts crane span structure, comprises the following steps:
A, making crane span structure built-in fitting;
B, crane span structure built-in fitting location and installation: pass threaded connection hole 4 with bolt crane span structure built-in fitting and cast-in-place structural template 6 are fixed, cast-in-place structural template 6 is floor, crane span structure built-in fitting is fixed on behind the bottom of floor with bolt, then cable 10 is penetrated in crane span structure built-in fitting;
C, cram crane span structure threaded connection hole 5 with filler, and seal at the two ends of crane span structure threaded connection hole 5 sticking cloth.
D, concreting;
E, cleaning filler and sealing adhesive plaster;
F, connection crane span structure 1 and crane span structure built-in fitting: crane span structure built-in fitting and crane span structure 1 are fixed through crane span structure threaded connection hole 5 with bolt, finally carried out crane span structure 1 distribution, at the interior installing wire of crane span structure 1, cable.
G, as shown in Figure 5, fire barrier 8 is installed in crane span structure built-in fitting, the quantity of fire barrier 8 is two, on in the inner chamber of crane span structure built-in fitting, lower each fire barrier 8 that arranges, one of them fire barrier 8 is arranged in the inner chamber of crane span structure built-in fitting bottom, fire barrier 8 is secured by bolts in the inside of crane span structure built-in fitting, play the effect of carrying fire prevention calking 9 weight, upper surface at this fire barrier 8 is filled the fire prevention calking 9 roughly the same with cast-in-place structural template 6 thickness, another fire barrier 8 is fixed on crane span structure built-in fitting inside with identical connected mode, and maintain an equal level with the apical side height of cast-in-place structural template 6, can make structure more attractive in appearance, avoid other people to dismantle.
The connected mode of fire barrier 8 and crane span structure built-in fitting inwall, is not limited to bolt and connects, and also can, using inside the sidewall of crane span structure built-in fitting bending or installation angle steel etc. as support, all can play the effect of fixing fire barrier 8.
After filling completes, fire prevention calking 9 is positioned at the At The Height of crane span structure built-in fitting inside, cast-in-place structural template 6, form fireproof partition, crane span structure built-in fitting interior fire protection performance better, more safe and reliable.
As shown in Figure 6, a side of fire barrier 8 is provided with several winding displacement holes 11 to the structure of fire barrier 8, by the winding displacement hole 11 on fire barrier 8, the vertical cable 10 in crane span structure built-in fitting is pressed to the inwall of crane span structure built-in fitting, plays the effect of winding displacement.
Adopt such method, before building, crane span structure threaded connection hole 5 is crammed and sealed, can avoid concrete to pour into crane span structure threaded connection hole 5, be convenient to follow-up being threaded, improve and connect precision and joint efficiency;
Separately, also can adopt and cram the method that sealing crane span structure threaded connection hole 5 is identical before building, entrance hole 7 is crammed and sealed, can avoid spillage, make that the inner duct of entrance hole 7 is level and smooth, burr is few, inner spool is difficult for scratching when mobile.
Disposable reserved crane span structure built-in fitting construction method described in employing the present embodiment detects construction quality after constructing, and the statistical conditions of the disposable reserved crane span structure hole installation and measuring point of hoistway are as shown in table 1:
Table 1: the disposable reserved crane span structure hole installation and measuring point qualification rate statistical form of hoistway
All the other steps in the method for employing the present embodiment crane span structure installation of embedded parts crane span structure refer to embodiment 1.
By reference to the accompanying drawings embodiments of the invention are described in detail above; but the present invention is not limited to above-described embodiment; in the ken possessing those of ordinary skill in the art, can also make various variations, within these variations all belong to protection scope of the present invention.
Claims (5)
1. a crane span structure built-in fitting, it is characterized in that: comprise four plate bodys (2), described four plate bodys (2) all longitudinally extend, described four plate bodys (2) enclose formation rectangle frame, on at least one plate body (2), be provided with crane span structure threaded connection hole (5), the bottom of at least one plate body (2) is provided with bending (3), described bending (3) is along laterally extending laterally, in described bending (3), be vertically arranged with threaded connection hole (4), on a plate body (2), be provided with therein the entrance hole (7) for cross-under cable (10), described entrance hole (7) runs through plate body (2).
2. crane span structure built-in fitting according to claim 1, is characterized in that: the inside of described rectangle frame is provided with at least one support bar, the inwall of the two ends of described support bar and plate body (2) is closely connected.
3. crane span structure built-in fitting according to claim 1 and 2, is characterized in that: on described crane span structure threaded connection hole (5), be provided with seal, described seal and crane span structure threaded connection hole (5) removably connect.
4. crane span structure built-in fitting according to claim 3, is characterized in that: described seal comprises filler and sealing adhesive plaster, and described filler is arranged in crane span structure threaded connection hole (5), and described fluid sealant cloth is arranged at the both sides of crane span structure threaded connection hole (5).
5. a method of utilizing crane span structure installation of embedded parts crane span structure as claimed in claim 1 or 2, is characterized in that, comprises the following steps:
A, making crane span structure built-in fitting;
B, crane span structure built-in fitting location and installation: pass threaded connection hole (4) with bolt crane span structure built-in fitting and cast-in-place structural template (6) are fixed;
C, concreting;
D, connection crane span structure (1) and crane span structure built-in fitting: pass crane span structure threaded connection hole (5) with bolt crane span structure built-in fitting and crane span structure (8) are fixed
;
Before described step c, two support bars are set in the inside of crane span structure built-in fitting, the two ends of the two support bars respectively plate body (2) relative with two of rectangle frame connect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067383.4A CN103806651B (en) | 2012-05-24 | 2012-05-24 | A kind of method utilizing crane span structure installation of embedded parts crane span structure |
| CN201210163726.8A CN102691415B (en) | 2012-05-24 | 2012-05-24 | Bridge embedded part and method for mounting bridge using bridge embedded part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210163726.8A CN102691415B (en) | 2012-05-24 | 2012-05-24 | Bridge embedded part and method for mounting bridge using bridge embedded part |
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| CN201410067383.4A Division CN103806651B (en) | 2012-05-24 | 2012-05-24 | A kind of method utilizing crane span structure installation of embedded parts crane span structure |
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| Publication Number | Publication Date |
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| CN102691415A CN102691415A (en) | 2012-09-26 |
| CN102691415B true CN102691415B (en) | 2014-09-24 |
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| CN201410067383.4A Active CN103806651B (en) | 2012-05-24 | 2012-05-24 | A kind of method utilizing crane span structure installation of embedded parts crane span structure |
| CN201210163726.8A Active CN102691415B (en) | 2012-05-24 | 2012-05-24 | Bridge embedded part and method for mounting bridge using bridge embedded part |
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| CN107268991A (en) * | 2017-08-18 | 2017-10-20 | 中国水利水电第六工程局有限公司 | A kind of electrically pre-buried pipeline goes out clear-water concrete built-in fitting and its construction method |
| CN107989201A (en) * | 2017-11-29 | 2018-05-04 | 北京城建北方设备安装有限责任公司 | Finished product crane span structure built-in fitting |
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| CN201292665Y (en) * | 2008-11-10 | 2009-08-19 | 郑州市第一建筑工程集团有限公司 | Concrete floor pre-arranged hole apparatus |
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| CN201473892U (en) * | 2009-09-08 | 2010-05-19 | 中铁九局集团有限公司 | Supporting device for pouring of concrete of No.0 block of continuous beam cantilever |
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| CN201292667Y (en) * | 2008-10-17 | 2009-08-19 | 中国建筑第六工程局有限公司 | Composite mould for pre-arranged hole for installation work pipe |
| CN201292665Y (en) * | 2008-11-10 | 2009-08-19 | 郑州市第一建筑工程集团有限公司 | Concrete floor pre-arranged hole apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103806651A (en) | 2014-05-21 |
| CN103806651B (en) | 2015-10-07 |
| CN102691415A (en) | 2012-09-26 |
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