CN204753936U - High -rise steel construction house does not have cast -in -place floor of support - Google Patents
High -rise steel construction house does not have cast -in -place floor of support Download PDFInfo
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- CN204753936U CN204753936U CN201520442717.1U CN201520442717U CN204753936U CN 204753936 U CN204753936 U CN 204753936U CN 201520442717 U CN201520442717 U CN 201520442717U CN 204753936 U CN204753936 U CN 204753936U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 246
- 239000010959 steel Substances 0.000 title claims abstract description 246
- 238000010276 construction Methods 0.000 title abstract description 32
- 238000011065 in-situ storage Methods 0.000 claims description 40
- 238000007789 sealing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009416 shuttering Methods 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model relates to a template field especially relates to a high -rise steel construction house does not have cast -in -place floor of support, include: two pairs of girder steels, its two liang of mutually perpendicular set up and form closed form, a plurality of steel pipes, it is fixed between a pair of parallel arrangement's girder steel through locking device, and each steel pipe all sets up the girder steel is perpendicular with this, locking device sets up to a pair of, and a pair of locking device will the one end centre gripping of steel pipe is in the centre to inject in the installation space of girder steel, a plurality of bracing pieces, it is fixed in the top of a plurality of steel pipes, and the both ends of each bracing piece are fixed respectively in another installation space to the girder steel of the perpendicular setting with a pair of girder steel, die block template, its installation are fixed in the top of a plurality of bracing pieces, and fixed with two pairs of girder steels simultaneously. The utility model discloses a template construction cycle is short, has thoroughly stopped the potential safety hazard of collapsing and bringing because of the template that the scaffold unstability caused, has practiced thrift construction cost simultaneously, has guaranteed construction quality.
Description
Technical field
The utility model relates to template field, particularly relates to a kind of high-rise steel structure house without support cast-in-situ floor.
Background technology
Steel work is according to it from heavy and light, and foundation cost is low, and anti-seismic performance is good, is applicable to soft foundation, install easily, construction period is fast, and gain quick return in investment, construction environment is polluted few, reduces production capacity surplus, one of comprehensive advantages " green building " that be described as 21st century such as anti-seismic performance is good.Present stage, steel structure technique floor mainly adopted cast-in-place concrete structure, floor is cast-in-place need steel girder erection to complete after, set up full hall scaffold, install template, assembling reinforcement, concreting again, after needing to wait until that concrete reaches some strength, full hall scaffold and template can be removed, carry out lower first floor plate and build operation construction.As floor is not built, just cannot carry out the installation of next joint steel column, directly affects the installation rate of steel work.
In recent years because scaffold unstability causes template cave-in accident again and again to occur, comparatively large owing to setting up full hall scaffold quantity below template, the scaffold probability that caves in is higher, once occur caving in implement to rescue all very difficult.
Utility model content
For above-mentioned technical problem, the utility model has designed and developed a kind of high-rise steel structure house without support cast-in-situ floor, object is to provide a kind of house of the high-rise steel structure without the need to setting up full hall scaffold without support cast-in-situ floor, to shorten construction period, thoroughly stop to cave in the potential safety hazard brought because of template that scaffold unstability causes, save construction cost simultaneously, ensure construction quality.
The technical scheme that the utility model provides is:
A kind of high-rise steel structure house, without support cast-in-situ floor, comprising:
Two pairs of girder steels, it vertically arranges formation closed form between two mutually;
Multiple steel pipe, it is fixed between the girder steel of pair of parallel setting by locking device, and each steel pipe is all arranged girder steel is vertical with this, and described locking device is set to a pair, one end of described steel pipe is clamped in centre by pair of locking device, and is limited in the installing space of girder steel;
Multiple support bar, it is fixed on the top of multiple steel pipe, and the two ends of each support bar be separately fixed at a pair girder steel vertically disposed another in the installing space of girder steel;
Bed die template, it is fixed on the top of multiple support bar, and fixes with two pairs of girder steels simultaneously.
By using two pairs of girder steels as main framework, install fixing steel pipe, support bar and bed die template successively from top to bottom, achieve house without the construction supporting cast-in-situ floor, what eliminate that full hall scaffold below template supports sets up and removes, save construction cost, shorten construction period; And the connection between steel pipe and girder steel can regulate tautness according to actual needs, meets the demand of different construction conditions.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, described locking device is a pair adjustable bolt and two pairs of clamping plate, a pair adjustable bolt divides the upper and lower being located at Steel pipe end surface, two pairs of clamping plate also divide the upper and lower being located at Steel pipe end surface, each adjustable bolt comprises a leading screw and is separately positioned on two nuts at leading screw two ends, and the two ends of each leading screw are all through the through hole that a pair clamping plate is offered, a pair clamping plate is supported respectively on a frange plate of described girder steel and an end face of described steel pipe.This locking device is applicable to be highly the girder steel of 250-400mm, regulates fixing between steel pipe and girder steel, can meet the needs of practice of construction by the adjustable bolt of upper and lower, again can by steel pipe and girder steel fixation.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, the two ends of each leading screw are provided with external screw thread, each nut is provided with internal thread, and the direction of the internal thread of two nuts is contrary, each nut is fixed with clamping plate away from the one end in leading screw axle center, and a pair clamping plate is supported respectively on a frange plate of described girder steel and an end face of described steel pipe.Change distance between two nuts with fixing steel pipe and girder steel by the rotation of leading screw, simple to operate, a pair clamping plate and girder steel contact area large, fixing more firm.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, described locking device is a pair adjustable bolt and two pairs of clamping plate, a pair adjustable bolt divides two sidepieces being located at Steel pipe end surface, two pairs of clamping plate divide the upper and lower being located at Steel pipe end surface, each adjustable bolt comprises a leading screw and is separately positioned on multiple nuts at leading screw two ends, and the two ends of each leading screw are all through the through hole that a pair clamping plate is offered, a pair clamping plate are supported respectively on an end face of the edge of a wing portion of described girder steel and described steel pipe.This locking device is applicable to be highly the girder steel of 150-250mm, regulates fixing between steel pipe and girder steel, can meet the needs of practice of construction by the adjustable bolt of both sides, again can by steel pipe and girder steel fixation.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, the two ends of each leading screw are provided with external screw thread, multiple nut and two pairs of clamping plate are all set on the external screw thread of leading screw, and one end of each leading screw is all arranged with a pair clamping plate, the centre of a pair clamping plate is provided with at least two nuts, and a pair clamping plate are supported respectively on an end face of the edge of a wing portion of described girder steel and described steel pipe.Change distance between a pair clamping plate with fixing steel pipe and girder steel by two nuts to the rotation of different directions, easy to operate, and a pair clamping plate and girder steel contact area large, fixing more firm.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, rubber pad is provided with between the end face of each clamping plate and described steel pipe and between the edge of a wing portion of each clamping plate and described girder steel, to increase the frictional force of contact surface, effectively prevent steel pipe under load gravity, slide displacement occurring.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, and the both sides of the central part of each steel pipe are provided with a pair pilot pin.Pilot pin plays the effect of quick position when installing steel pipe, can effectively prevent steel pipe sideways, and template cave-in accident occurs.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, and adjacent two girder steels are connected and fixed by combined special-shaped steel column, to make the connection between girder steel more firm.
Preferably, described high-rise steel structure house is without in support cast-in-situ floor, and described bed die template is connected and fixed by multiple support and described combined special-shaped steel column, is connected firmly to make bed die template and combined special-shaped steel column.
Preferably, described high-rise steel structure house, without in support cast-in-situ floor, is all filled with expanding sealing strips in the space between described bed die template and described girder steel and between described bed die template and described support.Expanding sealing strips is met after water and is expanded, and effectively can stop spillage, ensures the impression quality of the smooth and concrete surface of the concrete surface after form removal.
High-rise steel structure house described in the utility model is without in support cast-in-situ floor, between two pairs of steel pipes, steel pipe, support bar and bed die template are installed successively from top to bottom, using steel pipe as support, eliminate setting up and removing of full hall scaffold below bed die template, greatly reduce working procedure, shorten construction period.Each steel pipe is all fixed by pair of locking device and the adjustable installation of girder steel, meet the difference needs that construction is actual, and be provided with rubber pad at contact surface, add the frictional force of contact surface, effectively prevent steel pipe, under load gravity, slide displacement occurs, stop potential safety hazard.
Accompanying drawing explanation
Fig. 1 is that high-rise steel structure house described in the utility model is without the general arrangement supporting cast-in-situ floor;
Fig. 2 is the contour schematic diagram of the both sides girder steel of 1-1 section in Fig. 1;
Fig. 3 is the not contour schematic diagram of the both sides girder steel of 1-1 section in Fig. 1;
Fig. 4 is the schematic diagram one of 2-2 section in Fig. 1;
Fig. 5 is the schematic diagram two of 2-2 section in Fig. 1;
Fig. 6 is highly the side schematic view of the steel girder erection of 250-400mm;
Fig. 7 is highly the front schematic view of the steel girder erection of 250-400mm;
Fig. 8 (a), Fig. 8 (b) and Fig. 8 (c) are the schematic diagrames of three kinds of structures of combined special-shaped steel column;
Fig. 9 (a) and Fig. 9 (b) is the schematic diagram of two kinds of structures of support;
Figure 10 is highly the side schematic view of the steel girder erection of 150-250mm;
Figure 11 is highly the front schematic view of the steel girder erection of 150-250mm.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to manual word to make those skilled in the art.
As shown in Figure 1, Figure 4 and Figure 5, the utility model provides a kind of high-rise steel structure house without support cast-in-situ floor, and comprising: two pairs of girder steels, it vertically arranges formation closed form between two mutually; Multiple steel pipe, it is fixed between the girder steel of pair of parallel setting by locking device, and each steel pipe is all arranged girder steel is vertical with this, and described locking device is set to a pair, one end of described steel pipe is clamped in centre by pair of locking device, and is limited in the installing space of girder steel; Multiple support bar, it is fixed on the top of multiple steel pipe, and the two ends of each support bar be separately fixed at a pair girder steel vertically disposed another in the installing space of girder steel; Bed die template, it is fixed on the top of multiple support bar, and fixes with two pairs of girder steels simultaneously.
During construction, first, according to the situation of actual high-rise steel structure, i.e. job site residence building standard width of a room in an old-style house situation, calculates house without the load supported on cast-in-situ floor, according to house without the load supported on cast-in-situ floor, select sectional dimension and the arrangement pitch of steel pipe 4 and support bar 5, steel pipe of the present utility model is square steel pipe, and support bar is that the lumps of wood is stupefied, and multiple steel pipe and support bar are equidistant arrangement.Secondly, between the girder steel 9 multiple steel pipes selected being fixed on pair of parallel setting by locking device, a pair steel girder erection is at the reserved location place of the building standard width of a room in an old-style house, girder steel is H profile steel beam, H profile steel beam comprises a web and is positioned at two frange plates at web two ends, each steel pipe is all vertical with a pair girder steel to be arranged, and parallel with the minor face of the building standard width of a room in an old-style house, to make stress equalization.When installing steel pipe, the both sides of the central part of each steel pipe are provided with a pair pilot pin 8, are regulated the position of each steel pipe by a pair pilot pin.The central part of steel pipe is limited in its grasping part by a pair pilot pin, plays location and scale effect, pilot pin can be a pair steel disc or other play the component of clamping action.Described locking device is set to a pair, one end of described steel pipe is clamped in centre by pair of locking device, and be limited in the installing space of described girder steel, namely, in the hemi-closure space that a web and two frange plates are formed, locking device described in up-down adjustment is fixed to make described steel pipe and described girder steel.Again, the multiple support bars selected are fixed on the top of multiple steel pipe, centre post 2 is arranged on the top of the central part of each steel pipe, first mounting center support bar during installation, remaining support bar is installed again, and the two ends of each support bar be separately fixed at a pair girder steel in step 2 vertically disposed another in the installing space of girder steel, namely each support bar is vertical with each steel pipe is arranged.Finally, bed die template 3 is fixed on the top of multiple support bar, and fixes with two pairs of girder steels simultaneously, in the utility model, bed die template is wooden form.
Described high-rise steel structure house is without in support cast-in-situ floor, and as shown in Figure 6 and Figure 7, this girder steel is be highly the H profile steel beam of 250-400mm.Described locking device is a pair adjustable bolt and two pairs of clamping plate 13, a pair adjustable bolt divides the upper and lower being located at Steel pipe end surface, two pairs of clamping plate also divide the upper and lower being located at Steel pipe end surface, namely, penstock installation in the hemi-closure space of H profile steel beam, the distance that the upper surface of steel pipe and lower surface are all certain apart from two edges of a wing portion of H profile steel beam.Each adjustable bolt is arranged in the space between the end face of steel pipe and the edge of a wing portion of H profile steel beam respectively, each adjustable bolt comprises a leading screw 7 and is separately positioned on two nuts 12 at leading screw two ends, and the two ends of each leading screw are all through the through hole that a pair clamping plate is offered, rotate described leading screw and support respectively on a frange plate of described girder steel and an end face of described steel pipe to make a pair clamping plate.
Described high-rise steel structure house is without in support cast-in-situ floor, the two ends of each leading screw are provided with external screw thread, and each nut is provided with internal thread, and the direction of the internal thread of two nuts is contrary, during to make screw turns, two nuts are to direction motion away from each other.Each nut is fixed with clamping plate away from the one end in leading screw axle center, train wheel bridge is a flat board, lower plate is a U-shaped plate that Open Side Down, rotational lead screw drives a pair clamping plate to support respectively on a frange plate of described girder steel and an end face of described steel pipe to make two nuts, described steel pipe and described girder steel is fixed.
Described high-rise steel structure house is without in support cast-in-situ floor, and as shown in Figure 10 and Figure 11, this girder steel is be highly the H profile steel beam of 150-250mm.Described locking device is a pair adjustable bolt and two pairs of clamping plate 13, a pair adjustable bolt divides two sidepieces being located at Steel pipe end surface, two pairs of clamping plate divide the upper and lower being located at Steel pipe end surface, namely, penstock installation in the hemi-closure space of H profile steel beam, the distance that the upper surface of steel pipe and lower surface are all certain apart from two edges of a wing portion of H profile steel beam.Each adjustable bolt is arranged on left side and the right side of steel pipe respectively, each adjustable bolt comprises a leading screw 7 and is separately positioned on multiple nuts 12 at leading screw two ends, and the two ends of each leading screw are all through the through hole that a pair clamping plate is offered, rotate described multiple nut respectively and support respectively on an end face of the edge of a wing portion of described girder steel and described steel pipe to make a pair clamping plate.
Described high-rise steel structure house is without in support cast-in-situ floor, the two ends of each leading screw are provided with external screw thread, multiple nut and two pairs of clamping plate are all set on the external screw thread of leading screw, and one end of each leading screw is all arranged with a pair clamping plate, and the centre of a pair clamping plate is provided with at least two nuts.A pair clamping plate is level board, a pair clamping plate is arranged with the edge of a wing portion of girder steel and an end contact of steel pipe respectively, rotate upper and lower two nuts respectively to move in the direction away from each other to make two nuts, and promote a pair clamping plate and support respectively on an end face of the edge of a wing portion of described girder steel and described steel pipe, described steel pipe and described girder steel are fixed, namely, for the adjustable bolt on top, upper cap nut makes train wheel bridge hold out against the upper limb edge of girder steel, and lower nut makes lower plate hold out against the upper surface of steel pipe.
The H profile steel beam of 250-400mm and the H profile steel beam of 150-250mm can be selected according to the construction demand of reality, and the H profile steel beam of 250-400mm is relative to the H profile steel beam of 150-250mm, and installing space is comparatively large, and range of application is wider.As shown in Figures 2 and 3, also can select contour H profile steel beam and not contour H profile steel beam according to the construction demand of reality, regardless of the H profile steel beam that contour H profile steel beam is still not contour, when constructing, the upper surface of girder steel is in level all the time.
Described high-rise steel structure house, without in support cast-in-situ floor, is provided with rubber pad 11 between the end face of each clamping plate and described steel pipe and between the edge of a wing portion of each clamping plate and described girder steel.Rubber pad after penstock installation completes, can be placed in upper surface and the lower surface place of steel pipe, then installs clamping plate, nut and leading screw successively.
Described high-rise steel structure house is without in support cast-in-situ floor, adjacent two girder steels are connected and fixed by combined special-shaped steel column 1, as shown in Fig. 8 (a), Fig. 8 (b) He Fig. 8 (c), combined special-shaped steel column can be cross, half cross or right angle type.Criss-cross combined special-shaped steel column is applicable to the construction of template in the middle part of the building standard width of a room in an old-style house, and half criss-cross combined special-shaped steel column is applicable to the construction of building standard width of a room in an old-style house edge template, and the combined special-shaped steel column of right angle type is applicable to the construction of building standard width of a room in an old-style house corner template.By multiple combined special-shaped steel column, multiple template is connected, to be suitable for the needs of practice of construction.
Described high-rise steel structure house is without in support cast-in-situ floor, bed die template in described step 4 is connected and fixed with described combined special-shaped steel column by multiple support 10, support can be angle iron bracket, as shown in Fig. 9 (a) He Fig. 9 (b), the end of angle iron bracket can be wedge shape or plane, to adapt to the needs of practice of construction, and strengthen the fixing of bed die template and combined special-shaped steel column.
Described high-rise steel structure house is without in support cast-in-situ floor, weather strip 6 is all filled with in space between described bed die template and described girder steel and between described bed die template and described support, weather strip can be expandable sponges bar, or other have the bar of sealing function, weather strip, after whole house is without the installation of support cast-in-situ floor, is blocked in the space between all parts.
Adopt house of the present utility model without support cast-in-situ floor, there is following effective effect:
1, short construction period, saving construction cost.Such as, the building of 24 floor heights, traditional mold method needs 6 working days, and could enter lower one deck operation again after needing to have built, completing entire building needs 144 working days.The utility model can three layers or four layers construct simultaneously, install for three floor plates and construct simultaneously, entire building totally 8 construction sections, 5 every period working days, 40 working days of total lever factor, substantially reduce the construction period, directly reduce construction cost.
2, material lease expenses and labour cost is saved.Tradition mold method needs to set up full hall scaffold as shuttering supporting, then on scaffold, set up wooden stupefied bone, lays template above wooden stupefied bone.The utility model utilizes H profile steel beam itself to do fulcrum, without the need to setting up all round victory scaffold, saving the lease expenses of full hall scaffold and setting up the labour cost of scaffold, dismounting scaffold.
3, in recent years because scaffold unstability causes template cave-in accident again and again to occur, the utility model, without the need to setting up all round victory scaffold, has thoroughly been stopped because of the scaffold unstability potential safety hazard brought that causes template to cave in.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in manual and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. high-rise steel structure house is without a support cast-in-situ floor, it is characterized in that, comprising:
Two pairs of girder steels, it vertically arranges formation closed form between two mutually;
Multiple steel pipe, it is fixed between the girder steel of pair of parallel setting by locking device, and each steel pipe is all arranged girder steel is vertical with this, and described locking device is set to a pair, one end of described steel pipe is clamped in centre by pair of locking device, and is limited in the installing space of girder steel;
Multiple support bar, it is fixed on the top of multiple steel pipe, and the two ends of each support bar be separately fixed at a pair girder steel vertically disposed another in the installing space of girder steel;
Bed die template, it is fixed on the top of multiple support bar, and fixes with two pairs of girder steels simultaneously.
2. high-rise steel structure house as claimed in claim 1 is without support cast-in-situ floor, it is characterized in that, described locking device is a pair adjustable bolt and two pairs of clamping plate, a pair adjustable bolt divides the upper and lower being located at Steel pipe end surface, two pairs of clamping plate also divide the upper and lower being located at Steel pipe end surface, each adjustable bolt comprises a leading screw and is separately positioned on two nuts at leading screw two ends, and the two ends of each leading screw are all through the through hole that a pair clamping plate is offered, a pair clamping plate is supported respectively on a frange plate of described girder steel and an end face of described steel pipe.
3. high-rise steel structure house as claimed in claim 2 is without support cast-in-situ floor, it is characterized in that, the two ends of each leading screw are provided with external screw thread, each nut is provided with internal thread, and the direction of the internal thread of two nuts is contrary, each nut is fixed with clamping plate away from the one end in leading screw axle center, and a pair clamping plate is supported respectively on a frange plate of described girder steel and an end face of described steel pipe.
4. high-rise steel structure house as claimed in claim 1 is without support cast-in-situ floor, it is characterized in that, described locking device is a pair adjustable bolt and two pairs of clamping plate, a pair adjustable bolt divides two sidepieces being located at Steel pipe end surface, two pairs of clamping plate divide the upper and lower being located at Steel pipe end surface, each adjustable bolt comprises a leading screw and is separately positioned on multiple nuts at leading screw two ends, and the two ends of each leading screw are all through the through hole that a pair clamping plate is offered, a pair clamping plate are supported respectively on an end face of the edge of a wing portion of described girder steel and described steel pipe.
5. high-rise steel structure house as claimed in claim 4 is without support cast-in-situ floor, it is characterized in that, the two ends of each leading screw are provided with external screw thread, multiple nut and two pairs of clamping plate are all set on the external screw thread of leading screw, and one end of each leading screw is all arranged with a pair clamping plate, the centre of a pair clamping plate is provided with at least two nuts, and a pair clamping plate are supported respectively on an end face of the edge of a wing portion of described girder steel and described steel pipe.
6. the high-rise steel structure house as described in claim 3 or 5, without support cast-in-situ floor, is characterized in that, is provided with rubber pad between the end face of each clamping plate and described steel pipe and between the edge of a wing portion of each clamping plate and described girder steel.
7. high-rise steel structure house as claimed in claim 1 is without support cast-in-situ floor, and it is characterized in that, the both sides of the central part of each steel pipe are provided with a pair pilot pin.
8. high-rise steel structure house as claimed in claim 1 is without support cast-in-situ floor, and it is characterized in that, adjacent two girder steels are connected and fixed by combined special-shaped steel column.
9. high-rise steel structure house as claimed in claim 8 is without support cast-in-situ floor, and it is characterized in that, described bed die template is connected and fixed by multiple support and described combined special-shaped steel column.
10. high-rise steel structure house as claimed in claim 9 is without support cast-in-situ floor, it is characterized in that, is all filled with expanding sealing strips in the space between described bed die template and described girder steel and between described bed die template and described support.
Priority Applications (1)
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CN201520442717.1U CN204753936U (en) | 2015-06-25 | 2015-06-25 | High -rise steel construction house does not have cast -in -place floor of support |
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CN201520442717.1U CN204753936U (en) | 2015-06-25 | 2015-06-25 | High -rise steel construction house does not have cast -in -place floor of support |
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CN201520442717.1U Expired - Fee Related CN204753936U (en) | 2015-06-25 | 2015-06-25 | High -rise steel construction house does not have cast -in -place floor of support |
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