CN203174618U - Steel support for reverse construction of firstly erecting steel column and secondly pouring concrete foundation - Google Patents
Steel support for reverse construction of firstly erecting steel column and secondly pouring concrete foundation Download PDFInfo
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- CN203174618U CN203174618U CN 201320138871 CN201320138871U CN203174618U CN 203174618 U CN203174618 U CN 203174618U CN 201320138871 CN201320138871 CN 201320138871 CN 201320138871 U CN201320138871 U CN 201320138871U CN 203174618 U CN203174618 U CN 203174618U
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Abstract
A steel support for reverse construction of firstly erecting a steel column and secondly pouring a concrete foundation comprises a transverse steel beam and two transverse steel beam landing legs. A steel column heel connecting platform for being connected with a steel column heel plate on a first section steel column is arranged on a middle section of the transverse steel beam. The two transverse steel beam landing legs are respectively connected at the two ends of the transverse steel beam in a welding mode, wherein the upper ends of the transverse steel beam landing legs are connected with the transverse steel beam in a welding mode. Transverse steel beam landing leg column heel plates for being connected with the tops of cast-in-place piles are arranged at the lower ends of the transverse steel beam landing legs. The steel support for the reverse construction of firstly erecting the steel column and secondly pouring the concrete foundation is installed on the tops of the cast-in-place piles around the steel column. By the adoption of the steel support, the first section steel column can conduct elevation, axis locating control under the condition that a mass concrete foundation is not in place, so that the steel column is installed, the goal that no construction joint exists in the constructed mass concrete foundation is achieved, the construction schedule is effectively improved, civil engineering working efficiency is improved, and the problems that a mass concrete foundation project is long in construction period and low in efficiency are solved.
Description
Technical field
The utility model relates to the steel bracket in a kind of job practices of foundation of the house that is applied in the steel reinforced concrete frame construction.
Background technology
Adopted the house of steel reinforced concrete framework design when construction, the first segment steel column in the steel reinforced concrete frame construction is wrapped in the volume of concrete foundation.For this structure, traditional job practices is, after filling pile construction is finished, the first section concrete pouring construction is carried out by absolute altitude in top at castinplace pile, and bury the steel column stone bolt underground at this section concrete, found first segment steel column (the first segment steel column is connected with the steel column stone bolt) after this section concrete is built and finished again, and then carry out the second section concrete pouring construction, form the structure that volume of concrete foundation wraps the first segment steel column at last.This traditional job practices has following 2 shortcomings: be construction in layer mode (pouring construction that is volume of concrete foundation is divided into the first section concrete pouring construction and the second section concrete pouring construction) owing to what adopt 1,, so have constuction joint in the volume of concrete foundation.2, long construction period, efficiency of construction is low.
The utility model content
The purpose of this utility model provides pouring concrete basis adverse construction method steel bracket behind the upright steel column of a kind of elder generation, solve the technical problem that volume of concrete foundation that traditional job practices builds up has constuction joint; And solve traditional low problem of job practices long construction period, efficiency of construction.
For achieving the above object, the utility model adopts following technical scheme: pouring concrete basis adverse construction method steel bracket behind the upright steel column of a kind of elder generation, it is characterized in that: comprise a horizontal girder steel and two horizontal girder steel supporting legs, the interlude of described horizontal girder steel is provided with the steel column foot connection platform that is connected usefulness with the steel column foot plate on the first segment steel column, described two horizontal girder steel supporting legs are welded to connect respectively at the two ends to girder steel, wherein laterally the upper end of girder steel supporting leg is welded to connect with horizontal girder steel, and laterally the lower end of girder steel supporting leg is provided with the horizontal girder steel supporting leg heel slab that is connected usefulness with the top of castinplace pile.
Pouring concrete basis adverse construction method can also comprise a vertical girder steel and a vertical girder steel supporting leg with steel bracket behind the upright steel column of this elder generation, one end of described vertical girder steel is welded to connect with the interlude of horizontal girder steel, vertically the other end of girder steel is welded to connect with the upper end of vertical girder steel supporting leg, and vertically the lower end of girder steel supporting leg is provided with the vertical girder steel supporting leg heel slab that is connected usefulness with the top of castinplace pile.
Compared with prior art the utlity model has following characteristics and beneficial effect: used job practices of the present utility model can adopt the sequence of construction of first upright first segment steel column after-pouring volume of concrete foundation, the pouring construction process of volume of concrete foundation no longer adopts the construction in layer mode, so the volume of concrete foundation that builds up does not have constuction joint.
Used job practices of the present utility model to adopt the sequence of construction of first upright first segment steel column after-pouring volume of concrete foundation, it can effectively improve construction speed, accelerate the civil engineering operating efficiency, alleviated long, inefficient shortcoming of volume of concrete foundation engineering construction cycle, the insulation canopy of also having alleviated the winter construction covering does not possess the pressure (namely can utilize the first segment steel column to take brooder, need not set up the steel pipe shelf again) that steel column is installed.
The utility model is installed in the top of the castinplace pile around the steel column, by this steel bracket, thereby can make the first segment steel column carry out the installation of absolute altitude, axis positioning control realization steel column under the situation that volume of concrete foundation does not put in place.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 is the schematic top plan view that pouring concrete basis adverse construction method is used steel bracket behind the upright steel column of first kind of elder generation.
Fig. 2 is that pouring concrete basis adverse construction method is arranged on facade structures schematic diagram between first segment steel column and the castinplace pile with steel bracket behind the upright steel column of first kind of elder generation.
Fig. 3 is the schematic perspective view that pouring concrete basis adverse construction method is connected with the first segment steel column with steel bracket behind the upright steel column of second kind of elder generation.
Fig. 4 is the schematic diagram that the first segment steel column links together by temporary fixed girder steel.
Fig. 5 is the construction process schematic diagram of pouring concrete basis reversed construction method behind the earlier upright steel column.
Fig. 6 is the installation procedure schematic diagram that pouring concrete basis adverse construction method is used steel bracket behind the earlier upright steel column.
The horizontal girder steel of Reference numeral: 1-, the horizontal girder steel supporting leg of 2-, the vertical girder steel of 3-, the vertical girder steel supporting leg of 4-, the temporary fixed girder steel of 5-, 6-steel column diagonal brace, 7-castinplace pile, 8-first segment steel column, 9-steel column foot connection platform, 10-steel column foot plate, the horizontal girder steel supporting leg of 11-heel slab, the vertical girder steel supporting leg of 12-heel slab, 13-Bo plate top surface, 14-Bo plate bottom surface, 15-adjust bolt.
The specific embodiment
Pouring concrete basis adverse construction method has two kinds with steel bracket behind the upright steel column of described elder generation.
Pouring concrete basis adverse construction method uses steel bracket referring to Fig. 1 behind first kind of upright steel column of elder generation, Fig. 2: comprise a horizontal girder steel 1 and two horizontal girder steel supporting legs 2, the interlude of described horizontal girder steel 1 is provided with the steel column foot connection platform 9 that is connected usefulness with the steel column foot plate 10 on the first segment steel column (also being bottom column), laterally girder steel 1 connects platform 9 by steel column foot and is connected with steel column foot plate 10 on the first segment steel column, described two horizontal girder steel supporting legs 2 are welded to connect respectively at the two ends to girder steel 1, wherein laterally the upper end of girder steel supporting leg 2 is welded to connect with horizontal girder steel 1, and laterally the lower end of girder steel supporting leg 2 is provided with the horizontal girder steel supporting leg heel slab 11(that is connected usefulness with the top of castinplace pile 7 and also is horizontal girder steel supporting leg suspension column flange); Laterally girder steel supporting leg 2 is connected with the top of castinplace pile 7 by horizontal girder steel supporting leg heel slab 11.
Behind the upright steel column of second kind of elder generation pouring concrete basis adverse construction method with steel bracket referring to Fig. 3: be with the steel bracket difference with the basic adverse construction method of pouring concrete behind the first kind of elder generation upright steel column, pouring concrete basis adverse construction method steel bracket is on first kind basis behind second kind of upright steel column of elder generation, a vertical girder steel 3 and a vertical girder steel supporting leg 4 have been increased, one end of described vertical girder steel 3 is welded to connect with the interlude of horizontal girder steel 1, vertically the other end of girder steel 3 is welded to connect with the upper end of vertical girder steel supporting leg 4, vertically the lower end of girder steel supporting leg 4 is provided with the vertical girder steel supporting leg heel slab 12(that is connected usefulness with the top of castinplace pile 7 and also is vertical girder steel supporting leg suspension column flange), vertically girder steel supporting leg 4 is connected with the top of castinplace pile 7 by vertical girder steel supporting leg heel slab 12.
Referring to shown in Figure 5, pouring concrete basis reversed construction method behind the upright steel column of described elder generation, its step is as follows.
Adverse construction method design, the making of steel bracket in pouring concrete basis behind step 1, the earlier upright steel column; Pouring concrete basis adverse construction method comprises a horizontal girder steel 1 and two horizontal girder steel supporting legs 2 with steel bracket behind the upright steel column of described elder generation, the interlude of described horizontal girder steel 1 is provided with the steel column foot connection platform 9 that is connected usefulness with the steel column foot plate 10 on the first segment steel column 8, described two horizontal girder steel supporting legs 2 are welded to connect respectively at the two ends to girder steel 1, wherein laterally the upper end of girder steel supporting leg 2 is welded to connect with horizontal girder steel 1, and laterally the lower end of girder steel supporting leg 2 is provided with the horizontal girder steel supporting leg heel slab 11(that is connected usefulness with the top of castinplace pile 7 and also is horizontal girder steel supporting leg suspension column flange);
Pouring concrete basis adverse construction method uses steel bracket when design behind the earlier upright steel column, survey out steel column castinplace pile spacing and castinplace pile top mark height all around, be used as the length of horizontal girder steel 1 with castinplace pile spacing around the steel column, deduct the height that a top mark height is used as steel bracket with level ground design elevation on the suspension column concrete, will design the sectional dimension of steel bracket in addition according to the weight of first segment steel column.Pouring concrete basis adverse construction method is that raw material is made usually with hot rolled H-shaped with steel bracket behind the earlier upright steel column, is independent stable unit, a space.In addition, regulate with the location of steel bracket and first segment steel column for ease of pouring concrete basis adverse construction method behind the earlier upright steel column, laterally girder steel supporting leg heel slab 11(has vertical girder steel 3 and vertically during girder steel supporting leg 4, also comprises vertical girder steel supporting leg heel slab 12), steel column foot connects platform 9 and also is the steel column foot flange with steel column foot plate 10() on connecting hole aperture preferably about the big 10mm of diameter than the crab-bolt that is connected them.
Adverse construction method location, the installation of steel bracket in pouring concrete basis behind step 2, the earlier upright steel column; Namely after castinplace pile 7 constructions are finished, adopt bulk-breaking lift-on/lift-off system pouring concrete basis adverse construction method steel bracket after earlier upright steel column is installed at the top of first segment steel column installation site castinplace pile all around, pouring concrete basis adverse construction method props up the top that is located at castinplace pile with steel bracket after making earlier upright steel column, and steel bracket is fixedlyed connected firmly with castinplace pile.
When adopting the bulk-breaking lift-on/lift-off system, suspender is selected wire rope and snap ring for use, and should carry out strength checking, intensity level must have enough intensity to guarantee safely (vertical girder steel 3 is arranged and vertically during girder steel supporting leg 4, colligation position will in the horizontal girder steel 1 of steel bracket and the vertical crossover sites of girder steel 3).
After pouring concrete basis adverse construction method uses steel bracket in place behind the earlier upright steel column, in the time of will to horizontal girder steel supporting leg heel slab 11(vertical girder steel 3 and vertical girder steel supporting leg 4 being arranged with transit, also comprise vertical girder steel supporting leg heel slab 12) proofread and correct, also to check plan-position and absolute altitude again, guarantee that they are in the deviation of regulation and stipulation.
In the described step 2, pouring concrete basis adverse construction method can adopt fixing top that is located at castinplace pile of overlap joint welding manner with steel bracket behind the earlier upright steel column, namely use the form of structure of steel bracket according to pouring concrete basis adverse construction method behind the earlier upright steel column, cross axis with the first segment steel column is benchmark, carry out steel bracket location unwrapping wire at the top of castinplace pile, then with reinforcing bar will earlier upright steel column after pouring concrete basis adverse construction method be welded to connect with a top bar splicing at the top of steel bracket and castinplace pile.Specifically, in the time of horizontal girder steel supporting leg heel slab 11(need being had vertical girder steel 3 and vertical girder steel supporting leg 4, also comprise vertical girder steel supporting leg heel slab 12) weld with a stake top reinforcing bar.
In the described step 2, pouring concrete basis adverse construction method also can adopt the stake top to bury fixing top that is located at castinplace pile of crab-bolt mode underground with steel bracket behind the earlier upright steel column, namely use the form of structure of steel bracket according to pouring concrete basis adverse construction method behind the earlier upright steel column, cross axis with the first segment steel column is benchmark, at the top of castinplace pile unwrapping wire, hole and bury chemical anchor bolts underground, by chemical anchor bolts will earlier upright steel column after pouring concrete basis adverse construction method be connected with the top of castinplace pile with steel bracket.When using chemical anchor bolts, use level gauge to check the foundation pile top mark height of castinplace pile, to determine the length of chemical anchor bolts.At the top of castinplace pile unwrapping wire, hole and when burying chemical anchor bolts underground, to on the stake top of castinplace pile, carry out unwrapping wire according to base coordinate point and figure paper size, to punch with Churn drill according to diameter and the length of chemical anchor bolts, use the instruments such as tube, hairbrush of blowing that the dirt in the hole is cleaned out, clean to guarantee in the hole.After cleaning out in the hole, earlier chemically-planted steel bar glue is put into the hole, rotation is implanted chemical anchor bolts (by pouring concrete basis adverse construction method steel bracket behind the adjustment nut of the bottom in the chemical anchor bolts and the earlier upright steel column of top anchor nut leveling then, after the leveling, nut and top anchor nut are adjusted in fastening bottom, and with pressing plate and laterally girder steel supporting leg heel slab or vertically girder steel supporting leg heel slab weld all around, concrete installation process can be referring to Fig. 6).
The installation of step 3, first segment steel column 8, check; Make first segment steel column 8 in place earlier, even pouring concrete basis adverse construction method was connected with steel bracket after first segment steel column 8 connected platform 9 and adjusts bolt 15 and found steel column earlier by steel column foot plate 10, steel column foot, adjust absolute altitude, misalignment of axe and the verticality of first segment steel column by adjusting bolt 15 simultaneously, after the first segment steel column installs and adjusts and finishes, between first segment steel column and first segment steel column, be connected temporary fixed girder steel 5 again, make all first segment steel columns by temporary fixed girder steel 5 link together (referring to Fig. 4);
Described first segment steel column 8 has round steel tubing string or two kinds of H steel columns (referring to Fig. 4).In the described step 3, if the round steel tubing string in the first segment steel column 8 when mounted can't with first segment steel column 8 in H steel column (core tube steel post) drawknot form stable unit, consider on-the-spot installation location and quality requirement, after the first segment steel column installs and adjusts and finishes, also need between first segment steel column 8 and horizontal girder steel 1, to be connected steel column diagonal brace 6(referring to Fig. 2).
In step 3, also has following some attention.
1, first segment steel column preliminary examination and supporting: after steel column is marched into the arena, the constructor cooperates main position such as the positions such as appearance and size, diameter of bolt hole and position, connector position of members such as on-the-spot supervising engineer's coupled columns, support to check comprehensively, can install after meeting design, related standards.
2, the inspection of orientation axis, absolute altitude: reply building orientation axis, support absolute altitude are checked before installing, and can begin to install after qualified.Orientation axis takes inside to establish the method control of auxiliary axis, and absolute altitude can adopt the adjustment nut accurately to control at the bottom of the post.
3, the first segment steel column is installed, is proofreaied and correct: after the first segment steel column in place, adjust absolute altitude earlier, adjust misalignment of axe again, adjust verticality at last; Add thin parallels at suspension column after the adjustment of steel column absolute altitude and pad, and strain with steel cable, guarantee the spatial stability of first segment steel column.
Step 4, employing concrete one-time-concreting molding construction method carry out the pouring construction of volume of concrete foundation.After the installation of first segment steel column, carry out the installation quality inspection of steel column by the supervising engineer, carry out the cast work of volume of concrete foundation after errorless again.When volume of concrete foundation is built, forbid to collide steel bracket, first segment steel column and steel column diagonal brace with vibrating head, to avoid displacement and inclination.
The course of work of the present utility model: the utility model is to first segment steel column and first pouring concrete basis adverse construction method installing and measuring, locating and fixedly having higher requirement with steel bracket behind the upright steel column; when carrying out concrete pouring construction, guarantee concrete vibrating can not make steel column and earlier behind the upright steel column pouring concrete basis adverse construction method be offset with steel bracket.
Quality control about pouring concrete basis reversed construction method behind the earlier upright steel column is as follows.
The standard that pouring concrete basis reversed construction method is carried out behind the earlier upright steel column: the installation quality of first segment steel column should satisfy " code for acceptance of construction quality of steel structures " technical requirements (GB50205-2001), allowable variation is installed is seen Table 1.
Table 1 first segment steel column is installed allowable error table (mm)
| Sequence number | Project | |
| 1 | First segment steel column (also being bottom column) post lower shaft line is offset orientation axis | 3.0 |
| 2 | First segment steel column orientation axis | 1.0 |
| 3 | The verticality of first segment steel column | H/1000, and be not more than 10.0 |
| 4 | Stone bolt (crab-bolt) off-centring | 2.0 |
| 5 | The bearing surface absolute altitude | ±3.0 |
| 6 | The bearing surface levelness | L/1000 |
Quality assurance measure: 1, at the horizontal girder steel supporting leg heel slab 11 of welding and vertical girder steel supporting leg heel slab 12(chemical anchor bolts are installed) must guarantee verticality and the degree of depth of chemical anchor bolts in the process, can the usage level chi, ruler controls, chemical anchor bolts can carry out the installation of upper component installing 24 hours rears.2, between two adjacent holes, forbid boring and chemically-planted steel bar glue to inject construction synchronously.3, should in time clear up behind the first upright steel column pouring concrete basis adverse construction method before the first segment steel column in place with the dirt of steel bracket upper surface, pouring concrete basis adverse construction method is located the requirement that should satisfy drawing, standard with absolute altitude, the axis of the upper surface of steel bracket behind the earlier upright steel column.4, the building site welding should have draught exclusion device, and the rainy day must not weld.5, when building volume of concrete foundation, proofread and correct verticality and the displacement of first segment steel column at any time with transit, as deviation takes place, take measures in time to correct.When 6, building volume of concrete foundation, control the concrete rate of climb well, make its even rising.
Claims (2)
1. pouring concrete basis adverse construction method steel bracket behind the upright steel column of an elder generation, it is characterized in that: comprise a horizontal girder steel (1) and two horizontal girder steel supporting legs (2), the interlude of described horizontal girder steel (1) is provided with the steel column foot connection platform (9) that is connected usefulness with the steel column foot plate (10) on the first segment steel column, described two horizontal girder steel supporting legs (2) are welded to connect respectively at the two ends to girder steel (1), wherein laterally the upper end of girder steel supporting leg (2) is welded to connect with horizontal girder steel (1), and laterally the lower end of girder steel supporting leg (2) is provided with the horizontal girder steel supporting leg heel slab (11) that is connected usefulness with the top of castinplace pile (7).
2. pouring concrete basis adverse construction method steel bracket behind the upright steel column of elder generation according to claim 1, it is characterized in that: pouring concrete basis adverse construction method also comprises a vertical girder steel (3) and a vertical girder steel supporting leg (4) with steel bracket behind the upright steel column of this elder generation, one end of described vertical girder steel (3) is welded to connect with the interlude of horizontal girder steel (1), vertically the other end of girder steel (3) is welded to connect with the upper end of vertical girder steel supporting leg (4), and vertically the lower end of girder steel supporting leg (4) is provided with the vertical girder steel supporting leg heel slab (12) that is connected usefulness with the top of castinplace pile (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320138871 CN203174618U (en) | 2013-03-26 | 2013-03-26 | Steel support for reverse construction of firstly erecting steel column and secondly pouring concrete foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320138871 CN203174618U (en) | 2013-03-26 | 2013-03-26 | Steel support for reverse construction of firstly erecting steel column and secondly pouring concrete foundation |
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| Publication Number | Publication Date |
|---|---|
| CN203174618U true CN203174618U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320138871 Expired - Fee Related CN203174618U (en) | 2013-03-26 | 2013-03-26 | Steel support for reverse construction of firstly erecting steel column and secondly pouring concrete foundation |
Country Status (1)
| Country | Link |
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| CN (1) | CN203174618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174155A (en) * | 2013-03-26 | 2013-06-26 | 中建保华建筑有限责任公司 | Reverse construction method and construction steel support of erecting steel column and pouring concrete foundation in sequential mode |
| CN104929372A (en) * | 2015-06-12 | 2015-09-23 | 山西四建集团有限公司 | Construction method for accurate steel pipe column installation |
-
2013
- 2013-03-26 CN CN 201320138871 patent/CN203174618U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174155A (en) * | 2013-03-26 | 2013-06-26 | 中建保华建筑有限责任公司 | Reverse construction method and construction steel support of erecting steel column and pouring concrete foundation in sequential mode |
| CN104929372A (en) * | 2015-06-12 | 2015-09-23 | 山西四建集团有限公司 | Construction method for accurate steel pipe column installation |
| CN104929372B (en) * | 2015-06-12 | 2017-05-17 | 山西四建集团有限公司 | Construction method for accurate steel pipe column installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20150326 |
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| EXPY | Termination of patent right or utility model |