CN111535200A - Anti-falling full-hall support structure and construction method - Google Patents
Anti-falling full-hall support structure and construction method Download PDFInfo
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- CN111535200A CN111535200A CN202010471906.7A CN202010471906A CN111535200A CN 111535200 A CN111535200 A CN 111535200A CN 202010471906 A CN202010471906 A CN 202010471906A CN 111535200 A CN111535200 A CN 111535200A
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- door opening
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
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Abstract
The application discloses prevent full hall supporting structure and construction method that fall, including full hall support body, the below of full hall support body is equipped with the collet, the top of full hall support body is equipped with the top and holds in the palm, the top of full hall support body is equipped with cast-in-place roof beam, full hall support body is equipped with the door opening, the door opening both sides are equipped with the stand, the door opening top is equipped with the distribution roof beam, the stand with be equipped with the spandrel girder between the distribution roof beam, the both ends of spandrel girder are equipped with the extension board, are equipped with bar bamboo plywood between the extension board of two adjacent spandrel girders. The invention ensures the stress safety of the structure, and simultaneously, the strip bamboo plywood put on the beam extension board well prevents objects falling from the upper part of the door opening. The effective driving width of the support passing door opening is increased, the support passing door opening is suitable for setting up the large-span passing door opening, the stress system is good, and the construction safety can be guaranteed. Can effectively prevent the loss of life and property caused by falling objects above the passing door opening.
Description
Technical Field
The application relates to the field of bridge engineering construction, in particular to a falling-prevention full-hall support structure and a construction method.
Background
In recent years, with the development of urban bridges, the design functions of modern bridges not only meet the basic requirement of traffic, but also increase the requirements of landscaping and the like, so that more bridges with complex structures and various forms appear. The superstructure of many domestic large and medium-sized bridges has adopted variable cross-section cast-in-place box girders, and the construction methods are different.
The full hall support is the common support form in the engineering construction, in order to satisfy that the existing traffic road is normal current during the construction, need wear cast-in-place roof beam full hall support department under existing traffic and set up the door opening structure, when satisfying on-the-spot normal construction, still need guarantee the safety of passing vehicle and pedestrian.
Patent CN201821224888.7 provides a cast-in-place box girder template support system, specifically indicates to make the bar basis on the ground, then builds bailey frame combination platform or steel-pipe column + bailey frame combination platform, and the bottom sprag that is regarded as the formula scaffold is detained to the bowl. This kind of braced system can reduce the ground treatment area, is particularly suitable for the more complicated region of topography, reduces quantity such as steel pipe, bowl fastener simultaneously, increases the place space, and braced system is more firm, but its current safety problem who does not solve under the door opening passing vehicle and pedestrian.
Disclosure of Invention
The application mainly aims to provide a falling prevention full framing structure and a construction method, which prevent objects falling from the upper part of a door opening.
In order to realize above-mentioned purpose, this application provides a prevent full hall bearing structure that falls, including full hall support body, the below of full hall support body is equipped with the collet, the top of full hall support body is equipped with the jacking, the top of full hall support body is equipped with cast-in-place roof beam, full hall support body is equipped with the door opening, the door opening both sides are equipped with the stand, the door opening top is equipped with the distribution roof beam, the stand with be equipped with the spandrel girder between the distribution roof beam, the both ends of spandrel girder are equipped with the extension board, are equipped with bar bamboo plywood between the extension board of double-phase adjacent spandrel girder.
Preferably, a first cross beam is arranged between the upper part of the distribution beam and the bottom support of the full-hall support body, and a second cross beam is arranged at the top support and the cast-in-place beam.
Preferably, the bearing beam is I45a I-steel, and the first cross beam and the second cross beam are I14I-steel.
Preferably, still include the concrete bar foundation, the below of stand is connected in the concrete bar foundation, be equipped with the bolt in the concrete bar foundation.
Preferably, the flange at the bottom of the upright column is connected with the embedded bolts, the size of the flange is 30cm multiplied by 30cm, and the center distance of the bolts is 60 cm.
Preferably, full hall support body includes vertical support, horizontal support, slant support, vertical support, horizontal support, slant support pass through the connection pad and connect.
Preferably, the bottom support and the top support are both provided with threads for adjustment.
The application also provides a construction method of the anti-falling all-round support structure, which comprises the following steps:
s1, directly pouring a concrete strip foundation with the thickness of 60cm and the width of 60cm on the surface of a road paved with asphalt or cement, wherein in order to ensure the integral stress of the box girder, the length of the concrete strip foundation is 1.5m on each side of the width of a top plate of a cast-in-place girder, and the foundation pouring construction is carried out after the bearing capacity of the foundation meets 200 Kpa; bolts are embedded in the corresponding positions of the center line of the concrete strip foundation, and the four bolts are arranged in a square shape and are connected with a flange plate at the bottom of the upright post;
s2, erecting a full hall support body and a door opening, wherein the full hall support body is constructed by connecting a vertical support, a transverse support and an oblique support through a connecting disc, the vertical support and the transverse support are made of phi 60 multiplied by 3.2mm steel pipes, the door opening is constructed by adopting an upright post and a distribution beam, the upright post is made of phi 220 multiplied by 6mm steel pipes, the distribution beam is made of I45a I-steel, the bearing beam is made of I45a I-steel, and the first cross beam and the second cross beam are made of double-spliced I14I-steel;
s3, putting the bamboo plywood strips on the extension plates of the bearing beams, and using the method to fully distribute the bamboo plywood on the bearing beams of the whole door opening.
Preferably, the method further comprises a step S4 of verifying the safety of the anti-falling full hall support structure by using finite element software to perform modeling analysis.
Preferably, in step S4, the software used is midas software, the structures are simulated by using space beam units, the door opening is calculated according to a distance greater than 6m, the pressure load is applied by using a uniform load, and the simulation is performed by using fixed constraints.
The beneficial effect of this application is: the invention ensures the stress safety of the structure, and simultaneously, the strip bamboo plywood put on the beam extension board well prevents objects falling from the upper part of the door opening. The effective driving width of the support passing door opening is increased, the support passing door opening is suitable for setting up the large-span passing door opening, the stress system is good, and the construction safety can be guaranteed. Can effectively prevent the loss of life and property caused by falling objects above the passing door opening.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is an enlarged view of portion C of FIG. 1;
FIG. 5 is a schematic view of a strip placement configuration;
FIG. 6 is a side view of the present invention;
FIG. 7 is an enlarged view of portion D of FIG. 6;
fig. 8 is a schematic structural view of a concrete strip foundation.
1-upright column, 2-vertical bracket, 3-transverse bracket, 4-oblique bracket, 5-cast-in-place beam, 6-distribution beam, 7-connecting disc, 8-bottom support, 9-bearing beam, 10-first cross beam, 11-concrete strip foundation, 12-second cross beam, 13-top support, 14-strip bamboo plywood, 15-bolt and 91-extension plate.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 8, this application provides a prevent full hall supporting structure that falls, including full hall support body, the below of full hall support body is equipped with collet 8, the top of full hall support body is equipped with top support 13, the top of full hall support body is equipped with cast-in-place roof beam 5, full hall support body is equipped with the door opening, the door opening both sides are equipped with stand 1, the door opening top is equipped with distribution roof beam 6, stand 1 with be equipped with spandrel girder 9 between the distribution roof beam 6, the both ends of spandrel girder 9 are equipped with extension board 91, are equipped with bar bamboo plywood 14 between the extension board 91 of two adjacent spandrel girders 9.
A first cross beam 10 is arranged between the upper part of the distribution beam 6 and the bottom support of the full support body, and a second cross beam 12 is arranged at the top support 13 and the cast-in-place beam 5.
The bearing beam 9 is I45a I-shaped steel, and the first cross beam 10 and the second cross beam 12 are I14I-shaped steel.
Still include concrete strip foundation 11, the below of stand 1 is connected in the concrete strip foundation 11, be equipped with bolt 15 in the concrete strip foundation 11.
The flange at the bottom of the upright post 1 is connected with the embedded bolts 15, the size of the flange is 30cm multiplied by 30cm, and the center distance of the bolts is 60 cm.
The full hall support body includes vertical support 2, horizontal support 3, slant support 4, vertical support 2, horizontal support 3, slant support 4 pass through connection pad 7 and connect.
The bottom support 8 and the top support 13 are both provided with threads for adjustment.
The application also provides a construction method of the anti-falling all-round support structure, which comprises the following steps:
s1, directly pouring a concrete strip foundation with the thickness of 60cm and the width of 60cm on the surface of a road paved with asphalt or cement, wherein in order to ensure the integral stress of the box girder, the length of the concrete strip foundation is 1.5m on each side of the width of a top plate of a cast-in-place girder, and the foundation pouring construction is carried out after the bearing capacity of the foundation meets 200 Kpa; bolts are embedded in the corresponding positions of the center line of the concrete strip foundation, and the four bolts are arranged in a square shape and are connected with a flange plate at the bottom of the upright post;
s2, erecting a full hall support body and a door opening, wherein the full hall support body is constructed by connecting a vertical support, a transverse support and an oblique support through a connecting disc, the vertical support and the transverse support are made of phi 60 multiplied by 3.2mm steel pipes, the door opening is constructed by adopting an upright post and a distribution beam, the upright post is made of phi 220 multiplied by 6mm steel pipes, the distribution beam is made of I45a I-steel, the bearing beam is made of I45a I-steel, and the first cross beam and the second cross beam are made of double-spliced I14I-steel;
s3, putting the bamboo plywood strips on the extension plates of the bearing beams, and using the method to fully distribute the bamboo plywood on the bearing beams of the whole door opening.
And S4, carrying out modeling analysis by using finite element software, and verifying the safety of the anti-falling full hall bracket structure.
In step S4, the adopted software is midas software, the structures are simulated by using the space beam unit, the door opening is calculated according to a distance greater than 6m, the pressure load is applied by uniformly distributing the load, and the simulation is performed by using the fixed constraint.
The upright post of the door opening adopts a steel pipe with the diameter of 220 × 6mm, and the maximum stress of the supporting steel pipe is 58.1 MPa-sigma obtained by the analysis of midas softwaremax＝58.1MPa<[σ]The strength of the steel pipe was found to satisfy the requirement, 250 MPa. Under the combined action of load, the maximum displacement of the upright column is 1.12mm < L/400 (4000 mm/400) which is 10mm, and the rigidity of the steel pipe can meet the requirement according to the technical specification of highway, bridge and culvert construction (JTG/T F50-2011).
The first beam adopts double-spliced I14I-shaped steel, and the maximum stress of the first beam under the action of the worst load combination is 19.5 MPa. Sigmamax＝19.5<[σ]The strength of the double I14I-steel can meet the requirement when the pressure is 250 MPa. The maximum displacement of the double-spliced I14I-shaped steel under the action of the worst load combination is as follows:
1.4mm<L/400mm＝17000/400＝42.5mm，
according to the regulations of highway bridge and culvert construction technical specification (JTG/TF50-2011), the I14I-shaped steel meets the requirements on rigidity.
The maximum stress of the full-scale support body under the worst load combined action is 108.3MPa, and the maximum displacement of the full-scale support body under the worst load combined action is as follows:
2.1mm<L/400mm＝17000/400＝42.5mm，
according to the regulations of highway bridge and culvert construction technical specification (JTG/TF50-2011), the rigidity of the full framing support body meets the requirements.
The vertical support is a phi 60 × 3.2.2 mm steel pipe with a cross-sectional area A of 570.73mm2120Mpa < 250Mpa & gt, K250/120 & gt 2.08 & gt, F/a & 68530/570.73 & gt, safety factor K & gt, 250/120 & gt, 2.08 & lt>1.3 the strength of the known vertical support meets the requirement; i-0.183 m lambda-3/0.183-16.31<100, looking up the road and bridge construction calculation manual attached table 3-26: psi 0.958, F/psi A < [ sigma ]]＝946/(0.985*16328)*1000＝66.52Mpa<300Mpa, the stability of the known vertical support meets the requirement.
Through calculation and checking, the door opening structure and the disk buckle type full hall bracket are safe and reliable under the given load condition, and all stress indexes meet the relevant standard requirements. The door opening structure and the disc buckle type full framing erection process are executed strictly according to a scheme, and the distance between the distribution beams is controlled. And during construction, the deformation of the door opening structure is closely observed, and if the deformation is too large, the construction is stopped in time, so that the safety is ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a prevent falling full hall supporting structure, a serial communication port, including full hall support body, the below of full hall support body is equipped with the collet, the top of full hall support body is equipped with the jacking, the top of full hall support body is equipped with cast-in-place roof beam, full hall support body is equipped with the door opening, the door opening both sides are equipped with the stand, the door opening top is equipped with the distribution roof beam, the stand with be equipped with the spandrel girder between the distribution roof beam, the both ends of spandrel girder are equipped with the extension board, are equipped with bar bamboo plywood between the extension board of double-phase adjacent spandrel girder.
2. The structure of claim 1, wherein a first beam is disposed above the distribution beam and between the bottom supports of the body of the hall frame, and a second beam is disposed between the top support and the cast-in-place beam.
3. The structure of claim 2, wherein the load-bearing beam is I45a I-beam, and the first and second beams are I14I-beam.
4. A fall arrest full hall supporting structure according to claim 1, further comprising a concrete strip foundation in which the lower part of the upright is connected, the concrete strip foundation being provided with bolts.
5. A fall arrest full hall supporting structure according to claim 4, in which flanges at the base of the uprights are connected to pre-embedded bolts, the flanges being 30cm x 30cm in size and the bolts being spaced 60cm apart on centre.
6. The structure of claim 1, wherein the body comprises a vertical support, a horizontal support, and a diagonal support, and the vertical support, the horizontal support, and the diagonal support are connected by connecting discs.
7. A fall arrest catwalk support structure according to any one of claims 1 to 6, wherein the base and the top mount are each provided with screw threads for adjustment.
8. A construction method of a fall-preventing full-hall support structure is characterized by comprising the following steps:
s1, directly pouring a concrete strip foundation with the thickness of 60cm and the width of 60cm on the surface of a road paved with asphalt or cement, wherein in order to ensure the integral stress of the box girder, the length of the concrete strip foundation is 1.5m on each side of the width of a top plate of a cast-in-place girder, and the foundation pouring construction is carried out after the bearing capacity of the foundation meets 200 Kpa; bolts are embedded in the corresponding positions of the center line of the concrete strip foundation, and the four bolts are arranged in a square shape and are connected with a flange plate at the bottom of the upright post;
s2, erecting a full hall support body and a door opening, wherein the full hall support body is constructed by connecting a vertical support, a transverse support and an oblique support through a connecting disc, the vertical support and the transverse support are made of phi 60 multiplied by 3.2mm steel pipes, the door opening is constructed by adopting an upright post and a distribution beam, the upright post is made of phi 220 multiplied by 6mm steel pipes, the distribution beam is made of I45a I-steel, the bearing beam is made of I45a I-steel, and the first cross beam and the second cross beam are made of double-spliced I14I-steel;
s3, putting the bamboo plywood strips on the extension plates of the bearing beams, and using the method to fully distribute the bamboo plywood on the bearing beams of the whole door opening.
9. The method of claim 8, further comprising step S4 of verifying the safety of the structure by modeling analysis using finite element software.
10. The method of claim 9, wherein in step S4, the software is midas software, the structures are simulated by using space beam units, the door opening is calculated to be greater than 6m, the pressure load is applied by using a uniform load, and the simulation is performed by using fixed constraints.
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| CN202010471906.7A CN111535200A (en) | 2020-05-28 | 2020-05-28 | Anti-falling full-hall support structure and construction method |
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| CN202010471906.7A CN111535200A (en) | 2020-05-28 | 2020-05-28 | Anti-falling full-hall support structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144655A (en) * | 2020-10-23 | 2020-12-29 | 中建一局集团建设发展有限公司 | Steel structure traveling protection channel system in building and construction method thereof |
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2020
- 2020-05-28 CN CN202010471906.7A patent/CN111535200A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144655A (en) * | 2020-10-23 | 2020-12-29 | 中建一局集团建设发展有限公司 | Steel structure traveling protection channel system in building and construction method thereof |
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