CN218024848U - Roof wall-attached fixing structure - Google Patents
Roof wall-attached fixing structure Download PDFInfo
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- CN218024848U CN218024848U CN202222327721.6U CN202222327721U CN218024848U CN 218024848 U CN218024848 U CN 218024848U CN 202222327721 U CN202222327721 U CN 202222327721U CN 218024848 U CN218024848 U CN 218024848U
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Abstract
The utility model discloses a roof wall-attached fixing structure, which comprises a pre-buried component, a bracket and a supporting piece; the embedded assembly is arranged at the edge of the roof, the support comprises a cross rod and a first upright post and a second upright post which are oppositely arranged, one end of the first upright post and one end of the second upright post are respectively welded with the embedded assembly, and the cross rod is respectively welded with the other end of the first upright post and the other end of the second upright post; support piece includes the first bracing piece that three slopes set up, second bracing piece and third bracing piece, first bracing piece and second bracing piece parallel arrangement, the both ends of first bracing piece weld with pre-buried subassembly and first stand respectively, the both ends of second bracing piece weld with pre-buried subassembly and second stand respectively, the third bracing piece becomes angle setting with first bracing piece, the one end and the pre-buried subassembly welding of third bracing piece, the one end welding of pre-buried subassembly is kept away from to the other end and the first stand of third bracing piece. The roof wall-attached fixing structure has the advantages of low cost, short installation and application period and good safety.
Description
Technical Field
The utility model relates to a building engineering technical field especially relates to a roofing attaches wall fixed knot and constructs.
Background
The construction elevator is a common man-carrying and cargo-carrying construction machine in building construction, can stop layer by layer in the vertical direction, has two functions of man and cargo, and is widely applied to high-rise building construction sites. Some areas require that the upper portion of the floor where the construction elevator arrives needs to be provided with an attached wall, and because the wall can not be provided above the conventional roof layer, the construction elevator can not reach the roof layer, and according to the traditional construction mode, the roof construction material can only reach the roof layer through tower crane lifting and manual transport, and the transport cost and the construction efficiency are poor. The construction method aims at the construction characteristics of large construction quantity of high-rise buildings, short construction period and the like, and the problem of arrangement of the roof layer construction elevator causes great influence on the engineering.
In the construction process, the prior art has the technical scheme that a reinforced concrete framework is temporarily arranged on a roof as an attachment point, the construction method is high in labor cost and material cost, long in period and incapable of being recycled, the influence of manual factors is considered, and if quality defects occur in the concrete pouring process, the safety and the stability of the wall attached to the construction elevator cannot be guaranteed.
In view of the above, there is a need for a new wall-attaching structure for roof, which solves or at least alleviates the above technical drawbacks.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a roofing attaches wall fixed knot and constructs, aim at solving among the prior art roofing top layer and set up and attach the wall with high costs, cycle length, the relatively poor technical problem of security.
In order to achieve the purpose, the utility model provides a roof wall-attached fixing structure which is used for connecting a tower crane wall-attached frame on the top layer of a building and comprises a pre-buried assembly, a bracket and a supporting piece; the embedded assembly is arranged at the edge of a roof, the support comprises a cross rod and a first upright post and a second upright post which are oppositely arranged, one end of the first upright post and one end of the second upright post are respectively welded with the embedded assembly, and the cross rod is respectively welded with the other end of the first upright post and the other end of the second upright post; the supporting piece comprises three first supporting rods, a second supporting rod and a third supporting rod which are obliquely arranged, the first supporting rods and the second supporting rods are arranged in parallel, two ends of each first supporting rod are welded with the embedded component and the first stand column respectively, two ends of each second supporting rod are welded with the embedded component and the second stand column respectively, the third supporting rod and the first supporting rods are arranged in an angle mode, one end of the third supporting rod is welded with the embedded component, and the other end of the third supporting rod is welded with one end, away from the embedded component, of the first stand column.
In an embodiment, the embedded assembly includes five groups of embedded parts arranged at intervals, and the five groups of embedded parts are respectively welded with the first upright post, the second upright post, the first support rod, the second support rod and the third support rod.
In one embodiment, the embedded parts include a first embedded plate, a connecting rod and a second embedded plate, the first embedded plate is used for being embedded in a concrete layer of the roof, the connecting rod is installed on the first embedded plate and extends upwards, and the other end of the connecting rod is connected with the second embedded plate.
In an embodiment, the second embedded plate is provided with a mounting groove, and an opening of the mounting groove faces upward.
In an embodiment, the second pre-buried plate is a Q235B steel plate.
In one embodiment, the thickness of the second embedded plate is 16 mm-20 mm.
In an embodiment, the first upright column, the second upright column, the cross bar, the first support rod, the second support and the third support rod are all Q235B high-frequency welded square steel tubes.
In one embodiment, the cross-sectional widths of the first upright post, the second upright post, the first support rod, the second support and the third support rod are all 200mm, and the thicknesses of the first upright post, the second upright post, the first support rod, the second support and the third support rod are all 8mm; the cross section width of horizontal pole is 200mm, and thickness is 10mm.
In an embodiment, one side that the support deviates from first bracing piece is the front of support, the front is used for the welding the tower crane attaches the wall frame, the third bracing piece set up in the side of support.
In one embodiment, the angle between the third support bar and the roof is 45 °.
In the technical scheme of the utility model, the roof wall-attached fixing structure comprises a pre-embedded assembly, a bracket and a support piece; the embedded component is arranged at the edge of a roof, the support comprises a cross rod and a first upright column and a second upright column which are oppositely arranged, one end of the first upright column and one end of the second upright column are respectively welded with the embedded component, and the cross rod is respectively welded with the other end of the first upright column and the other end of the second upright column; support piece includes the first bracing piece that three slopes set up, second bracing piece and third bracing piece, first bracing piece and second bracing piece parallel arrangement, the both ends of first bracing piece weld with pre-buried subassembly and first stand respectively, the both ends of second bracing piece weld with pre-buried subassembly and second stand respectively, the third bracing piece becomes angle setting with first bracing piece, the one end and the pre-buried subassembly welding of third bracing piece, the one end welding of pre-buried subassembly is kept away from to the other end and the first stand of third bracing piece. In order to meet the requirement that the wall attaching frame is arranged at the upper part of the stop layer of the construction elevator, a support with reliable stress is designed on the roof as a pulling node of the wall attaching frame on the roof, so that the problem that the construction elevator cannot be lifted to a roof layer in the traditional construction process is solved, and the situations that materials are manually transported to the roof and the traditional reinforced concrete attaching point cannot be recycled are solved; specifically, pre-buried subassembly sets up in the concrete layer in advance, reserve welding position, with first stand, the second stand, horizontal pole and first bracing piece, second bracing piece and third bracing piece weld respectively on pre-buried subassembly, the horizontal pole is as the knot point that draws that attaches the wall frame, first stand and second stand upwards extend, first bracing piece and second bracing piece set up and deviate from attaching wall frame one side (being the back of support) at the horizontal pole, the third bracing piece then sets up the side at the support, play the effect of supporting and stable structure through two stands and three spinal branch vaulting poles, again in the stress analysis model whether firm reliable of analysis structure, demand when ensureing to satisfy the in-service use. The utility model discloses a have the cost lower, the installation drops into the advantage that life cycle is short and the security is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of a roof wall-attached fixing structure, a wall-attached frame and a tower crane in an embodiment of the utility model;
fig. 2 is a top view of the roof wall-attached fixing structure and the construction elevator in the embodiment of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;
FIG. 5 is an enlarged view of portion C of FIG. 3;
FIG. 6 is an enlarged view of portion D of FIG. 4;
fig. 7 is a schematic structural diagram of a second embedded plate according to an embodiment of the present invention.
The reference numbers indicate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two groups, e.g., two groups, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any combination, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a roof wall-attached fixing structure 100, which is used for connecting a wall-attached frame 130 of a tower crane 150 to a top floor 110 of a building, and comprises a pre-buried assembly 1, a bracket 2 and a support member 3; the embedded component 1 is arranged at the edge of a roof, the support 2 comprises a cross rod 21 and two first upright columns 22 and two second upright columns 23 which are oppositely arranged, one ends of the first upright columns 22 and the second upright columns 23 are respectively welded with the embedded component 1, and the cross rod 21 is respectively welded with the other ends of the first upright columns 22 and the second upright columns 23; support piece 3 includes the first bracing piece 31 of three slope settings, second bracing piece 32 and third bracing piece 33, first bracing piece 31 and second bracing piece 32 parallel arrangement, the both ends of first bracing piece 31 weld with pre-buried subassembly 1 and first stand 22 respectively, the both ends of second bracing piece 32 weld with pre-buried subassembly 1 and second stand 23 respectively, third bracing piece 33 and first bracing piece 31 angulation setting, the one end of third bracing piece 33 welds with pre-buried subassembly 1, the other end of third bracing piece 33 and the one end welding that pre-buried subassembly 1 was kept away from to first stand 22.
In the embodiment, in order to meet the requirement that the wall attaching frame 130 is arranged at the upper part of the stop layer of the construction lifter 120, the support 2 with reliable stress is designed on the roof as the pulling node of the wall attaching frame 130 on the roof, so that the problem that the construction lifter 120 cannot be lifted to the roof layer in the traditional construction process is solved, and the problems that the materials are manually transported to the roof and the traditional reinforced concrete attaching point cannot be recycled are solved; specifically, the embedded component 1 is arranged in the concrete layer 140, a welding position is reserved, the first upright post 22, the second upright post 23, the cross rod 21 and the first supporting rod 31 are respectively welded on the embedded component 1, the cross rod 21 serves as a pulling node of the wall attaching frame 130, the first upright post 22 and the second upright post 23 extend upwards, the first supporting rod 31 and the second supporting rod 32 are arranged on one side of the cross rod 21, which deviates from the wall attaching frame 130 (namely, the back of the support 2), the third supporting rod 33 is arranged on the side face of the support 2, the functions of supporting and stabilizing a structure are achieved through the two upright posts and the three supporting rods, whether an analysis structure is firm and reliable in a stress analysis model is judged, and the requirement for practical use is met. The embodiment has the advantages of low cost, short installation and application period and good safety.
In a specific embodiment, after the material and size installation positions are determined, steel frame design (structural calculation, model calculation, floor punching calculation and steel structure section checking calculation), steel frame pre-embedded plate positioning and steel frame welding are carried out; the specific calculation process is as follows (the following values are selected according to the actual construction conditions, the utility model discloses do not specifically limit this, only as a representative embodiment):
the force F of the wall-attached frame acting on the building is calculated as follows:
f = L60/(B2.05) =3270 × 60/(1430 × 2.05) =66.93kN, the bias is preserved in both tie points exerting a horizontal force of 66.93kN, and considering both directions of tension and compression; the maximum stress ratio of each upright post, each support rod and each cross rod is 0.73 according to the calculation result of the model, and the requirements are met.
(1) And (3) floor punching calculation:
area A of the bottom surface of the die-cut broken cone b ＝(h c +2h 0 )(b c +2h 0 )＝(0.39+2*0.103)*(0.39+2*0.103)＝0.3552m 2
Local load design value F l ＝N-q·A b ＝190-0*0.3552＝190kN
Calculating the perimeter u of the cross section m ＝2(h c +b c +2h 0 )＝2*(390+390+2*103)＝1972mm
Influence coefficient eta of action area shape 1
β s ＝h c /b c =390/390=1 < 2, take beta s ＝2
η 1 ＝0.4+1.2/β s ＝0.4+1.2/2＝1
Calculating the influence coefficient eta of the ratio of the section perimeter to the effective height of the plate section 2
η 2 ＝0.5+α s ·h 0 /4u m ＝0.5+40*103/(4*1972)＝1.022
Influence coefficient η = Min { η [ ] 1 ,η 2 }＝Min{1,1.022}＝1
The plate without stirrup or bent steel bar has the following bearing capacity by punching according to the following regulations:
Fl≤0.7β h ·f t ·η·u m ·h 0 (concrete canonical formula 6.5.1-1)
R＝0.7β h ·f t ·η·u m ·h 0 ＝0.7*1*1433*1*1.972*0.103
The =203.7kN is not less than Fl =190kN, and the requirements are met;
(2) And (3) checking the sectional dimension of the local compression area:
local pressure area A l
A l ＝ab＝390×390＝152100mm 2
Calculating the base area A b
According to article 6.6.2 of the concrete Specification, A b ＝A l ＝152100mm 2
Coefficient of strength improvement beta l
β l ＝√(A b /A l )＝√(152100/152100)＝1.00
Influence coefficient omega of load distribution
According to appendix D.5 of concrete Specification, ω =1 when the load on the local compression surface is uniformly distributed
ωβ l f cc A l ＝1.00×1.00×14.30×0.85×152100＝1848.78kN
Fl =190.00kN is not more than 1848.78kN, and the requirements are met;
since the partial conservation acts on the framework by 2 times F, the framework has larger margin.
In an embodiment, the embedded assembly 1 includes five groups of embedded parts 10 arranged at intervals, the five groups of embedded parts 10 are respectively welded with the first upright column 22, the second upright column 23, the first supporting rod 31, the second supporting rod 32 and the third supporting rod 33, and the five groups of embedded parts 10 respectively arranged in the concrete layer 140 have less manufacturing materials, are convenient to install and are independent of each other.
Specifically, referring to fig. 5, the embedment 10 includes a first embedment plate 11, a connecting rod 12, and a second embedment plate 13, the first embedment plate 11 is for being buried in a concrete layer 140 of a roof, the connecting rod 12 is mounted to the first embedment plate 11 and extends upward, and the other end of the connecting rod 12 is connected to the second embedment plate 13. The embedding of the embedded part 10 is an important link of installation, the accuracy requirement is high, and the installation progress and the whole installation quality are related, in the embodiment, the first embedded plate 11 is arranged in the concrete layer 140 in advance, the connecting rod 12 is installed, and the second embedded plate 13 is installed for welding with the upright post and the supporting rod when the bracket 2 is arranged subsequently. More specifically, the connecting rod 12 connects the first embedment plate 11 and the second embedment plate 13 using 8M 16 cross-over chemical anchors.
In an embodiment, referring to fig. 7, in order to facilitate the matching with the vertical columns and the supporting rods, the second pre-embedded plate 13 is provided with mounting grooves 14, the openings of the mounting grooves 14 are upward, the shapes of the mounting grooves 14 are correspondingly arranged according to the shapes of the vertical columns and the supporting rods, the vertical columns and the supporting rods are mounted in the mounting grooves 14 one by one, and the vertical columns and the supporting rods are welded by adopting a symmetrical welding technology; it should be noted that welding is an important content in steel structure construction operation, the difference in welding quality directly affects the stress state of the steel structure, different welding processes are adopted for connection between steel structure members to produce different effects, and symmetric welding can be started from the aspects of the material of the steel structure members, the form of butt joint points, the types of welding rods, arc striking plates and the like. In the welding process, the steel structure is in inhomogeneous heating and cooling process, and steel structure itself is a metal, and the change of temperature may form different stresses in steel structure inside, and the appearance of this kind of force may exert an influence to the structure, consequently is necessary to let the steel structure be in the state of being heated evenly, synchronously cooling when removing the welding as far as possible when executing welding, and the welding is preheated and is slowly cooled down after welding crucial.
In an embodiment, the second embedded plate 13 may be a Q235B steel plate, and the Q235B steel plate has low content of carbon and other alloy elements, good plasticity and toughness, generally no hardening tendency, no tendency of generating welding cracks and the like, and excellent welding performance. When the Q235B steel plate is welded, special technological measures such as preheating, postweld heat treatment and the like are not needed generally, complex and special equipment is not needed, no special requirement is required for a welding power supply, and the welding method has the advantage that the common AC and DC arc welding machine can weld.
In an embodiment, the thickness of the second pre-buried plate 13 is 16mm to 20mm, and the second pre-buried plate 13 in the thickness range has the advantages of higher strength and economic applicability, and specifically, the thickness of the second pre-buried plate 13 may be 16mm.
In an embodiment, similarly, the first upright 22, the second upright 23, the cross bar 21, the first support bar 31, the second support bar and the third support bar 33 may be Q235B high-frequency welded square steel pipes, and all welding joints are fully welded.
In one embodiment, the cross-sectional widths of the first upright column 22, the second upright column 23, the first supporting rod 31, the second supporting rod and the third supporting rod 33 are all 200mm, and the thicknesses thereof are all 8mm; the cross-section of the cross-bar 21 is 200mm wide and 10mm thick. This embodiment has the advantage that structural strength is high and the welding installation of being convenient for.
In an embodiment, referring to fig. 1 and 2, one side of the bracket 2 away from the first support rod 31 is a front surface of the bracket 2, the front surface is used for welding the tower crane 150 to attach to the wall frame 130, and the third support rod 33 is disposed on a side surface of the bracket 2. The projection of the third supporting rod 33 on the roof and the projection of the first supporting rod 31 on the roof form 90 degrees, so that the lateral tension can be effectively provided for the bracket 2, and the structure is firm and reliable. Specifically, the included angle between the third support bar 33 and the roof may be 45 °; it should be noted that, the concrete installation steps of tower crane 150 guide rail frame heightening and wall-attached frame 130 in the construction process are as follows: (1) hoisting the standard knot to the top of the cage by using a tower crane 150; (2) Starting the suspension cage to the top of the guide rail bracket (note that the lifting height of the suspension cage needs to be ensured to be not less than 200mm away from the top of the guide rail bracket); (3) Hoisting the standard knot to the position right above the guide rail frame by using a tower crane 150, installing in place, and screwing down the bolt; (4) heightening the guide rail frames to a required height in this order; (5) In the section-by-section installation process, attention must be paid to the verticality control of the guide rail frame within one thousandth of a range, and meanwhile, the verticality control can be adjusted and fixed through the wall-attached inclined strut combination; (6) The last section is a toothless section without a rack, and yellow paint is brushed according to the standardized requirement; (7) According to the condition of the building on the construction site, the wall-attached frame 130 is installed and connected according to the determined center distance and the connection size of the building; (8) The double cages of the construction hoist 120 are opened to the positions suitable for installing the wall attaching frame 130, and the wall attaching frame 130 is installed by connecting the cross rods 21 according to the erection requirements of the wall attaching frame 130.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (10)
1. A roof wall-attached fixing structure is used for connecting a tower crane wall-attached frame on the top layer of a building and is characterized by comprising a pre-buried assembly, a support and a support piece; the embedded assembly is arranged at the edge of a roof, the support comprises a cross rod and a first upright post and a second upright post which are oppositely arranged, one end of the first upright post and one end of the second upright post are respectively welded with the embedded assembly, and the cross rod is respectively welded with the other end of the first upright post and the other end of the second upright post; the supporting piece comprises three first supporting rods, a second supporting rod and a third supporting rod which are obliquely arranged, the first supporting rods and the second supporting rods are arranged in parallel, two ends of each first supporting rod are welded with the embedded component and the first stand column respectively, two ends of each second supporting rod are welded with the embedded component and the second stand column respectively, the third supporting rod and the first supporting rods are arranged in an angle mode, one end of the third supporting rod is welded with the embedded component, and the other end of the third supporting rod is welded with one end, away from the embedded component, of the first stand column.
2. A roof wall-attached fixing structure as claimed in claim 1, wherein the embedded components include five groups of embedded parts arranged at intervals, and the five groups of embedded parts are welded to the first vertical column, the second vertical column, the first supporting rod, the second supporting rod and the third supporting rod respectively.
3. A roof wall-attached fixing structure as claimed in claim 2, wherein said embedded parts include a first embedded plate, a connecting rod and a second embedded plate, said first embedded plate being used to be embedded in the concrete layer of said roof, said connecting rod being mounted to said first embedded plate and extending upward, and the other end of said connecting rod being connected to said second embedded plate.
4. A roof wall-attached fixing structure as claimed in claim 3, wherein the second embedded plate is provided with a mounting groove, and the mounting groove is opened upwards.
5. A roof-attached wall fixing structure as claimed in claim 3, wherein the second pre-buried plate is a Q235B steel plate.
6. A roof wall-attached fixing structure as claimed in claim 3, wherein the thickness of the second embedded plate is 16mm to 20mm.
7. A roof wall-attached fixing structure as claimed in claim 1, wherein the first upright, the second upright, the cross bar, the first support bar, the second support and the third support bar are all Q235B high-frequency welded square steel tubes.
8. A roof wall-attached fixing structure as claimed in claim 7, wherein the first upright, the second upright, the first support bar, the second support and the third support bar are all 200mm in cross-sectional width and 8mm in thickness; the cross section width of the cross bar is 200mm, and the thickness is 10mm.
9. A roof wall-attached fixing structure as claimed in claim 1, wherein one side of the bracket, which faces away from the first support rod, is a front surface of the bracket, the front surface is used for welding with the tower crane wall-attached frame, and the third support rod is arranged on a side surface of the bracket.
10. A roof wall-attached fixing structure as claimed in claim 9, wherein the angle between the third supporting bar and the roof is 45 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222327721.6U CN218024848U (en) | 2022-08-31 | 2022-08-31 | Roof wall-attached fixing structure |
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| CN202222327721.6U CN218024848U (en) | 2022-08-31 | 2022-08-31 | Roof wall-attached fixing structure |
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