CN102235096A - Construction method for adding back shore through carrying out unilateral unloading on steel truss roof - Google Patents
Construction method for adding back shore through carrying out unilateral unloading on steel truss roof Download PDFInfo
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- CN102235096A CN102235096A CN 201010153633 CN201010153633A CN102235096A CN 102235096 A CN102235096 A CN 102235096A CN 201010153633 CN201010153633 CN 201010153633 CN 201010153633 A CN201010153633 A CN 201010153633A CN 102235096 A CN102235096 A CN 102235096A
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- steel truss
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Abstract
The invention discloses a construction method for adding a back shore through carrying out unilateral unloading on a steel truss roof. The method comprises the following steps: 1, determining the positions of supports required to be performed unloading through calculation, and determining the unloading value of each support required to be unloaded, then selecting the type of a jack corresponding to each support according to the obtained unloading values; 2, placing the jacks in right positions, carrying out pre-top construction on each jack, and respectively setting a back shore structure at the position of each gusset plate of a lower chord of a steel truss; 3, carrying out cutting on each support so as to separate the support, then carrying out jacking on the jacks so as to transfer the load of the steel truss to the back shore structure; and 4, after carrying out reinforcement construction on the steel truss, resetting each support, and removing the back shore structure. In the invention, the stress on an original steel truss roof is released in the mode of carrying out unilateral unloading on the steel truss roof, and the occurrence of adverse deformation of the steel truss roof subjected to unilateral unloading is avoided through the added back shore structure so as to realize the high-altitude former-address reinforcement of the steel truss roof, thereby effectively reducing the site and mechanical requirements of reinforcement construction on construction sites.
Description
Technical field
This patent relates to the job practices that a kind of former address in the construction of steel truss roofing strengthening reconstruction reinforces.
Background technology
At present, the transformation of old building has been become an important developing direction of urban renewal and architectural development.Along with the original factory resettlement of urban central zone, the transformation of the old industrial premises of urban central zone has also been become the urban architecture development, realize the emphasis that green building and green construction require.
The transformation of the steel truss roofing of the large span of old industrial premises is the key and the key link of whole old factory rehabilitation often.Because the steel roofing span of mill construction is big, Heavy Weight, its rebuilding construction often need with its remove reinforce again to the ground after again assembly unit hang oneself, such job practices often needs large-area construction plant and large-scale construction machinery to cooperate, working procedure is loaded down with trivial details, and security control requires high.
In sum, how to provide a kind of former address that can realize roofing to reinforce, and the monolateral off-load of steel truss roofing that can its distortion of better controlled to add the job practices of shoring be the technical problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of monolateral off-load of steel truss roofing to add the job practices of shoring, the former address that can realize roofing reinforces, and can better controlled its distortion, reduced the difficulty and the cost of steel roofing strengthening construction, improved safety of construction simultaneously.
To achieve the above object, the present invention adopts following technical scheme:
A kind of monolateral off-load of steel truss roofing adds the job practices of shoring, and comprises the steps:
Step 2, the in place and pre-top application worker of each jack of each jack, and each gusset plate position of the lower chord of steel truss is provided with respectively shores structure;
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, in the described step 2, in place and the pre-top application worker of each jack of described each jack is meant at the bearing position of needs unloading corresponding jack is installed, and makes each jack contact fully with the lower chord of steel truss.
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, the installation site of the jack of each bearing needs to determine according to the form of the position of each bearing and relevant steel truss, and must make jack be positioned at the main stressed steel truss of next-door neighbour's bearing lower chord under.
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, in the described step 2, the described structure of shoring is connected to form by four steel pipe lattice columns, described lower end of shoring structure is arranged at and respectively strides the bottom base face, described upper end of shoring structure is installed with a steel plate, stays a slit between described steel plate and the corresponding gusset plate.
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, and described each four steel pipe lattice column shoring in the structure surround a regular prism, and four steel pipe lattice columns reinforce the connection to horizon bar by four in length and breadth every a segment distance from bottom to up.
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, and adjacent described shoring between the structure connects by horizontal brace rod.
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, the concrete following steps that adopt of described step 3:
A. push up in advance under the cooperation of support at jack, each bearing is carried out cutting and separating;
B. carry out the jack jacking, the jacking amount of jack is carried out pre-control;
C. after the unloading of monolateral bearing, jack jacking, clog in the slit between steel plate and the steel truss lower-chord panel point plate with flitch, and to the steel pipe lattice column that each gusset plate position of roof truss lower edge has set carry out final shore fixing, with the steel truss Load Transfer to shoring on the structure.
Monolateral off-load at above-mentioned steel truss roofing adds in the job practices of shoring, and among the described step a, described each bearing is carried out cutting and separating is to adopt cutting mechanics to carry out each bearing is cut along the embedded part face.
Add in the job practices of shoring in monolateral off-load, among the described step a, each bearing is carried out cutting and separating adopt gas cutting to separate at above-mentioned steel truss roofing.
The monolateral off-load of above-mentioned steel truss roofing adds in the job practices of shoring, among the described step b, the jacking amount of jack is carried out the jacking amount that pre-control needs to determine in advance each jack, definite actual result of this jacking amount in strict accordance with the steel truss detection, and the mechanical characteristic of steel truss, in conjunction with the operating mode design of jack-up construction, definite by calculating.
Beneficial effect of the present invention is as follows:
The monolateral off-load of steel work roofing of the present invention adds the reinforced construction method of shoring, employing discharges the stress of original steel truss roofing to the mode of the monolateral off-load of steel truss roofing, and avoid the unfavorable distortion that roofing occurs after the monolateral off-load by the structure of shoring that increases, thereby, the former address, high-altitude that can realize the steel truss roofing reinforces, effectively reduce place and the mechanical requirement of strengthening construction, simultaneously, can guarantee the strengthening construction process safe the job site.
Description of drawings
The monolateral off-load of steel truss roofing of the present invention adds the job practices of shoring and is provided by following embodiment and accompanying drawing.
Fig. 1 is the overall structure schematic diagram of the monolateral off-load of steel truss roofing of the present invention when adding the construction method step 2 of shoring;
Fig. 2 is a jack structural representation in place in the step 2 of the present invention;
Fig. 3 is that the present invention shores the spread out cooperation schematic diagram of frame of structure and steel;
Fig. 4 is the structural representation after bearing resets in the step 4 of the present invention.
Among the figure, 1-steel truss, 11-lower chord, 2-shore structure, 3-jack, 4-bottom base face, 21-steel pipe lattice column, 22-in length and breadth to horizon bar, 23-steel plate, 5-flitch, 6-bearing, the old base-plate of 61-, 61 '-Xin base-plate, 62-embedded part face (being line of cut, cut surface), 7-concrete, 8-nut.
The specific embodiment
Below will add the job practices of shoring to the monolateral off-load of steel truss roofing of the present invention is described in further detail.
Below with reference to accompanying drawings the present invention is described in more detail, has wherein represented the preferred embodiments of the present invention, should be appreciated that those skilled in the art can revise the present invention described here and still realize advantageous effects of the present invention.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as limitation of the present invention.
For clear, whole features of practical embodiments are not described.In the following description, be not described in detail known function and structure, because they can make the present invention because unnecessary details and confusion.Will be understood that in the exploitation of any practical embodiments, must make a large amount of implementation details, for example, change into another embodiment by an embodiment according to relevant system or relevant commercial restriction to realize developer's specific objective.In addition, will be understood that this development may be complicated and time-consuming, but only be routine work to those skilled in the art.
For purpose of the present invention, feature are become apparent, the specific embodiment of the present invention is further described below in conjunction with accompanying drawing.It should be noted that accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the purpose of the aid illustration embodiment of the invention lucidly.
The monolateral off-load of this steel truss roofing adds the job practices of shoring, and sees also Fig. 1-Fig. 4, comprises the steps:
Step 2, each jack 3 in place and each jack 3 pre-top application worker, and lower chord 11 each gusset plate positions of steel truss 1 are provided with respectively shores structure 2.
See also Fig. 1 and Fig. 2, described each jack 3 in place being meant at bearing 6 positions of needs unloading are installed corresponding jack 3.The installation site of the jack 3 of each bearing 6 needs to determine according to the form of the position of each bearing 6 and relevant steel truss 1, must make jack 3 be positioned at the main stressed steel truss 1 of next-door neighbour's bearing 6 lower chord 11 under, so, jack 3 can better replace the spread out gravity of frame 1 of seat supports steel.Described each jack 3 pre-top application worker are meant and make each jack 3 contact fully with the lower chord 11 of steel truss 1.
See also Fig. 3, the described structure 2 of shoring is connected to form by four steel pipe lattice columns 21, described lower end of shoring structure 2 is arranged at and respectively strides bottom base face 4, and described upper end of shoring structure 2 is installed with a steel plate 23, stays a slit between described steel plate 23 and the corresponding gusset plate.Described each four steel pipe lattice column 21 shoring in the structure 2 surround a regular prism, and four steel pipe lattice columns 21 reinforce the connection to horizon bar 22 by four in length and breadth every a segment distance from bottom to up.
Wherein, the described concrete structure of shoring structure 2 is as follows, please continue to consult Fig. 3: adopt 4 steel pipe lattice columns 21 that are processed into by the steel pipe of 48mm (length) * 3.5mm (diameter) at steel truss 1 lower chord 11 each gusset plate positions, mutual spacing 150mm, scaffolding height is upwards set up to the following 5cm of roof truss lower-chord panel point plate (being that the slit is 5cm) by respectively striding bottom base face 4.Four steel pipe lattice column 21 bottoms 200mm that makes progress establishes in length and breadth to horizon bar 22 (also claiming in length and breadth to the bar of sweeping the floor), and this is established in length and breadth to horizon bar 22 to the bar of the sweeping the floor step pitch control 1500mm that makes progress in length and breadth.Describedly surround square to horizon bar 22 in length and breadth, be used to connect this four steel pipe lattice columns 21.Described top (i.e. upper end) of shoring structure 2 is provided with 250mm (length) * 250mm (width) steel plate 23.In the present embodiment, the upper end of described four steel pipe lattice columns 21 and this steel plate 23 weld together.Described steel plate 23 is as the strong point of steel truss load.In the present embodiment, reserve the space (slit) of 5cm between described steel plate 23 and the corresponding gusset plate.
Preferably, in order to guarantee to shore the resistance to overturning of structure, adjacent described shoring can be passed through horizontal brace rod (meaning not shown in the figures) connection between the structure 2.In the present embodiment, adjacently describedly shore that step pitch is provided with the horizontal brace rod reinforcement by connection for 1.8 meters between the structure 2.
A. under the cooperation of jack 3 pre-top supports, each bearing 6 is carried out cutting and separating;
Among the described step a, see also Fig. 3, described each bearing 6 is carried out cutting and separating is to adopt cutting mechanics along embedded part face 62 (being cut surface, the junction of promptly old base-plate 61 and bearing 6) each bearing 6 to be cut.In the present embodiment, cutting and separating adopts the gas cutting separate mode.
B. carry out jack 3 jackings, the jacking amount of jack 3 is carried out pre-control;
Consider that the steel of reinforcing after the finishing frame that spreads out may produce certain deformation or disturbs down, carries out pre-control so tackle the jacking amount of jack 3.Described jacking amount to jack 3 is carried out the jacking amount that pre-control needs to determine in advance each jack 3, the actual result that definite need of this jacking amount detect in strict accordance with steel truss 1, and the mechanical characteristic of steel truss 1, and in conjunction with the design of the operating mode of jack-up construction, definite by calculating.
C. after 6 unloadings of monolateral bearing, jack 3 jackings, clog the steel plate 23 of shoring structure 2 and the slit chock off between the steel truss 1 lower-chord panel point plate with flitch 5, and to the steel pipe lattice column 21 that each gusset plate position of roof truss lower edge has set carry out final shore fixing, with steel truss 1 Load Transfer to shoring on the structure 2.This step c can consult Fig. 4, and Fig. 4 shows and shores the spread out cooperation schematic diagram of frame of structure and steel.
The monolateral off-load of steel work roofing of the present invention adds the reinforced construction method of shoring, employing discharges the stress of original steel truss roofing to the mode of the monolateral off-load of steel truss roofing, and avoid the unfavorable distortion that roofing occurs after the monolateral off-load by the structure of shoring that increases, thereby, the former address, high-altitude that can realize the steel truss roofing reinforces, effectively reduce place and the mechanical requirement of strengthening construction, simultaneously, can guarantee the strengthening construction process safe the job site.In a word, the inventive method is simple, cost is low, is convenient to promote.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Thereby reduced under the prerequisite to the surrounding enviroment influence, reduced the operating cost that pumped well draws water.
Claims (10)
1. the monolateral off-load of a steel truss roofing adds the job practices of shoring, and it is characterized in that, comprises the steps:
Step 1 by calculating definite support position that need unload, is determined the off-load numerical value of each bearing that need unload simultaneously, selects the model of the pairing jack of each bearing in view of the above;
Step 2, the in place and pre-top application worker of each jack of each jack, and each gusset plate position of the lower chord of steel truss is provided with respectively shores structure;
Step 3 is carried out cutting and separating with each bearing, carries out the jack jacking, with the steel truss Load Transfer to shoring on the structure;
Step 4 is carried out strengthening construction to steel truss, when steel truss carries out each bearing being resetted after strengthening construction finishes, removes and shores structure.
2. the monolateral off-load of steel truss roofing as claimed in claim 1 adds the job practices of shoring, it is characterized in that, in the described step 2, in place and the pre-top application worker of each jack of described each jack is meant at the bearing position of needs unloading corresponding jack is installed, and makes each jack contact fully with the lower chord of steel truss.
3. the monolateral off-load of steel truss roofing as claimed in claim 1 adds the job practices of shoring, it is characterized in that, the installation site of the jack of each bearing needs to determine according to the form of the position of each bearing and relevant steel truss, and must make jack be positioned at the main stressed steel truss of next-door neighbour's bearing lower chord under.
4. the monolateral off-load of steel truss roofing as claimed in claim 1 adds the job practices of shoring, it is characterized in that, in the described step 2, the described structure of shoring is connected to form by four steel pipe lattice columns, described lower end of shoring structure is arranged at and respectively strides the bottom base face, described upper end of shoring structure is installed with a steel plate, stays a slit between described steel plate and the corresponding gusset plate.
5. the monolateral off-load of steel truss roofing as claimed in claim 4 adds the job practices of shoring, it is characterized in that, described each four steel pipe lattice column shoring in the structure surround a regular prism, and four steel pipe lattice columns reinforce the connection to horizon bar by four in length and breadth every a segment distance from bottom to up.
6. the monolateral off-load of steel truss roofing as claimed in claim 4 adds the job practices of shoring, and it is characterized in that, adjacent described shoring between the structure connects by horizontal brace rod.
7. the monolateral off-load of steel truss roofing as claimed in claim 4 adds the job practices of shoring, it is characterized in that,
The concrete following steps that adopt of described step 3:
A. push up in advance under the cooperation of support at jack, each bearing is carried out cutting and separating;
B. carry out the jack jacking, the jacking amount of jack is carried out pre-control;
C. after the unloading of monolateral bearing, jack jacking, clog in the slit between steel plate and the steel truss lower-chord panel point plate with flitch, and to the steel pipe lattice column that each gusset plate position of roof truss lower edge has set carry out final shore fixing, with the steel truss Load Transfer to shoring on the structure.
8. the monolateral off-load of steel truss roofing as claimed in claim 7 adds the job practices of shoring, and it is characterized in that, among the described step a, described each bearing is carried out cutting and separating is to adopt cutting mechanics to carry out each bearing is cut along the embedded part face.
9. the monolateral off-load of steel truss roofing as claimed in claim 7 adds the job practices of shoring, and it is characterized in that, among the described step a, each bearing is carried out cutting and separating adopt gas cutting to separate.
10. the monolateral off-load of steel truss roofing as claimed in claim 7 adds the job practices of shoring, it is characterized in that, among the described step b, the jacking amount of jack is carried out the jacking amount that pre-control needs to determine in advance each jack, definite actual result that detects according to steel truss of this jacking amount, and the mechanical characteristic of steel truss, in conjunction with the operating mode design of jack-up construction, definite by calculating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153633 CN102235096A (en) | 2010-04-22 | 2010-04-22 | Construction method for adding back shore through carrying out unilateral unloading on steel truss roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153633 CN102235096A (en) | 2010-04-22 | 2010-04-22 | Construction method for adding back shore through carrying out unilateral unloading on steel truss roof |
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| CN102235096A true CN102235096A (en) | 2011-11-09 |
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| CN 201010153633 Pending CN102235096A (en) | 2010-04-22 | 2010-04-22 | Construction method for adding back shore through carrying out unilateral unloading on steel truss roof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452333A (en) * | 2013-09-23 | 2013-12-18 | 山东双得利建设科技有限公司 | Device and method for unloading chord members of grid structures |
| CN105064720A (en) * | 2015-07-21 | 2015-11-18 | 中铁城建集团南昌建设有限公司 | Self-supporting steel bar truss floor support plate support structure |
| CN106285028A (en) * | 2015-05-28 | 2017-01-04 | 中国二十冶集团有限公司 | Reinforcement of factory building construction method in long-span heavy type crane girder based on BIM technology dismounting |
| CN114182978A (en) * | 2021-12-20 | 2022-03-15 | 云南大学 | Construction method and equipment for building steel structure roof collapse jacking repair |
-
2010
- 2010-04-22 CN CN 201010153633 patent/CN102235096A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452333A (en) * | 2013-09-23 | 2013-12-18 | 山东双得利建设科技有限公司 | Device and method for unloading chord members of grid structures |
| CN103452333B (en) * | 2013-09-23 | 2015-08-19 | 山东双得利建设科技有限公司 | Space truss structure chord member emptier and discharging method |
| CN106285028A (en) * | 2015-05-28 | 2017-01-04 | 中国二十冶集团有限公司 | Reinforcement of factory building construction method in long-span heavy type crane girder based on BIM technology dismounting |
| CN105064720A (en) * | 2015-07-21 | 2015-11-18 | 中铁城建集团南昌建设有限公司 | Self-supporting steel bar truss floor support plate support structure |
| CN105064720B (en) * | 2015-07-21 | 2017-05-17 | 中铁城建集团南昌建设有限公司 | Self-supporting steel bar truss floor support plate support structure |
| CN114182978A (en) * | 2021-12-20 | 2022-03-15 | 云南大学 | Construction method and equipment for building steel structure roof collapse jacking repair |
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Application publication date: 20111109 |