CN103174155B - Reverse construction method for erecting steel column and pouring concrete foundation - Google Patents
Reverse construction method for erecting steel column and pouring concrete foundation Download PDFInfo
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- CN103174155B CN103174155B CN201310097575.5A CN201310097575A CN103174155B CN 103174155 B CN103174155 B CN 103174155B CN 201310097575 A CN201310097575 A CN 201310097575A CN 103174155 B CN103174155 B CN 103174155B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 382
- 239000010959 steel Substances 0.000 title claims abstract description 382
- 238000010276 construction Methods 0.000 title claims abstract description 121
- 239000004567 concrete Substances 0.000 title claims abstract description 111
- 230000002411 adverse Effects 0.000 claims description 56
- 238000009434 installation Methods 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
A reverse construction method for erecting a steel column and then pouring a concrete foundation comprises the following steps; step one, designing and manufacturing a steel support for reverse construction of a steel column and then pouring concrete foundation; step two, positioning and mounting the steel support for reverse construction of the steel column and then pouring the concrete foundation; step three, mounting and checking the first section of steel column; and step four, adopting a concrete one-step pouring forming construction method to carry out pouring construction of the mass concrete foundation. The construction method adopts the construction sequence of firstly building the first steel column and then pouring the large-volume concrete foundation, and the pouring construction process of the large-volume concrete foundation does not adopt a layered construction mode any more, so that the built large-volume concrete foundation has no construction joint, the construction progress is effectively improved, the civil engineering work efficiency is accelerated, and the defects of long construction period and low efficiency of the large-volume concrete foundation are alleviated.
Description
Technical field
The present invention relates to a kind of construction method of foundation of house of steel reinforced concrete frame construction.
Background technology
Have employed the house of steel reinforced concrete framework design when constructing, the first segment steel column in steel reinforced concrete frame construction is wrapped in volume of concrete foundation.For this structure, traditional construction method is, after filling pile construction completes, first paragraph concrete pouring construction is carried out by absolute altitude at the top of castinplace pile, and steel column stone bolt is buried underground on this section concrete, this section concrete founds first segment steel column (being connected with steel column stone bolt by first segment steel column) after building again, and then carries out second segment concrete pouring construction, finally forms the structure that volume of concrete foundation wraps first segment steel column.This traditional construction method has following 2 shortcomings: 1, due to employing is construction in layer mode (namely the pouring construction of volume of concrete foundation is divided into first paragraph concrete pouring construction and second segment concrete pouring construction), so have constuction joint in volume of concrete foundation.2, long construction period, efficiency of construction is low.
Summary of the invention
The object of this invention is to provide one first pouring concrete basis reversed construction method after vertical steel column, the technical problem that volume of concrete foundation that traditional construction method builds up has constuction joint be solved; And solve traditional construction method long construction period, problem that efficiency of construction is low.
For achieving the above object, the present invention adopts following technical scheme: one is pouring concrete basis reversed construction method after vertical steel column first, it is characterized in that step is as follows: the design of pouring concrete basis adverse construction method steel bracket after step one, first vertical steel column, making; After described first vertical steel column, pouring concrete basis adverse construction method steel bracket comprises 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 connecting platform be connected with the steel column foot plate on first segment steel column, described two horizontal girder steel supporting legs are welded to connect at the two ends of horizontal girder steel respectively, wherein the upper end of horizontal girder steel supporting leg and horizontal girder steel are welded to connect, and the lower end of horizontal girder steel supporting leg is provided with the horizontal girder steel supporting leg heel slab be connected with the top of castinplace pile.
The location of pouring concrete basis adverse construction method steel bracket, installation after step 2, first vertical steel column; Namely after filling pile construction completes, adopt bulk-breaking lift-on/lift-off system pouring concrete basis adverse construction method steel bracket after the installation of the top of the castinplace pile of first segment steel column installation site surrounding first vertical steel column, after making first to found steel column, pouring concrete basis adverse construction method steel bracket props up the top being located at castinplace pile, and steel bracket is fixedly connected with firmly with castinplace pile.
Step 3, the installation of first segment steel column, check; First make first segment steel column in place, even if first segment steel column is connected with the basic adverse construction method steel bracket of pouring concrete after first vertical steel column by steel column foot plate, steel column foot connecting platform and adjustment bolt, adjust the absolute altitude of first segment steel column, misalignment of axe and verticality by adjusting bolt simultaneously, first segment steel column installs and after having adjusted, between first segment steel column with first segment steel column, be connected temporary fixed girder steel again, all first segment steel columns are linked together by temporary fixed girder steel.
Step 4, employing concrete one-time-concreting molding construction method carry out the pouring construction of volume of concrete foundation.
In described step 2, first after vertical steel column, pouring concrete basis adverse construction method steel bracket can adopt overlap joint welding manner to fix a top being located at castinplace pile, namely according to the form of structure of pouring concrete basis adverse construction method steel bracket after first vertical steel column, with the cross axis of first segment steel column for benchmark, carry out steel bracket line setting at the top of castinplace pile, be then welded to connect with the stake top bar splicing of reinforcing bar by the top of pouring concrete basis adverse construction method steel bracket after first vertical steel column and castinplace pile.
In described step 2, first after vertical steel column, pouring concrete basis adverse construction method steel bracket also can adopt stake top to bury crab-bolt mode underground and fix a top being located at castinplace pile, namely according to the form of structure of pouring concrete basis adverse construction method steel bracket after first vertical steel column, with the cross axis of first segment steel column for benchmark, castinplace pile top unwrapping wire, hole and bury chemical anchor bolts underground, by chemical anchor bolts, pouring concrete basis adverse construction method steel bracket after first vertical steel column is connected with the top of castinplace pile.
In described step 3, first segment steel column installs and after having adjusted, can also be connected steel column diagonal brace between first segment steel column with horizontal girder steel.
After described first vertical steel column, pouring concrete basis adverse construction method steel bracket can also comprise a longitudinal girder steel and a longitudinal girder steel supporting leg, one end of described longitudinal girder steel and the interlude of horizontal girder steel are welded to connect, longitudinal other end of girder steel and the upper end of longitudinal girder steel supporting leg are welded to connect, and the lower end of longitudinal girder steel supporting leg is provided with the longitudinal girder steel supporting leg heel slab be connected with the top of castinplace pile.
Described first segment steel column is round steel tubing string or H profile steel post.
Compared with prior art the present invention has following characteristics and beneficial effect: construction method of the present invention have employed the sequence of construction of first vertical first segment steel column after-pouring volume of concrete foundation, the pouring construction process of volume of concrete foundation no longer adopts construction in layer mode, so the volume of concrete foundation built up does not have constuction joint.
Construction method of the present invention have employed the sequence of construction of first vertical first segment steel column after-pouring volume of concrete foundation, it effectively can improve construction speed, accelerate construction work efficiency, alleviate volume of concrete foundation engineering construction cycle length, inefficient shortcoming, the roof insulating also alleviating winter construction covering does not possess the pressure (first segment steel column namely can be utilized to take brooder, need not set up steel pipe shelf again) installing steel column.
The present invention have also been devised a kind of steel bracket being arranged on the top of the castinplace pile of steel column surrounding, by this steel bracket, can make that first segment steel column carries out absolute altitude when volume of concrete foundation does not put in place, axis location controls thus realize the installation of steel column.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the first first schematic top plan view of pouring concrete basis adverse construction method steel bracket after vertical steel column.
Fig. 2 is that after the first first founds steel column, pouring concrete basis adverse construction method steel bracket is arranged on the facade structures schematic diagram between first segment steel column and castinplace pile.
Fig. 3 is the schematic perspective view that after the second first founds steel column, pouring concrete basis adverse construction method is connected with first segment steel column with steel bracket.
Fig. 4 is the schematic diagram that first segment steel column is linked together by temporary fixed girder steel.
Fig. 5 is the construction process schematic diagram first founding pouring concrete basis reversed construction method after steel column.
Fig. 6 is the installation procedure schematic diagram first founding pouring concrete basis adverse construction method steel bracket after steel column.
The horizontal girder steel of Reference numeral: 1-, the horizontal girder steel supporting leg of 2-, the longitudinal girder steel of 3-, the longitudinal 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 connecting platform, 10-steel column foot plate, 11-horizontal girder steel supporting leg heel slab, 12-longitudinal girder steel supporting leg heel slab, 13-Bo plate top surface, 14-Bo plate bottom surface, 15-adjust bolt.
Detailed description of the invention
After described first vertical steel column, pouring concrete basis adverse construction method steel bracket has two kinds.
After the first first founds steel column, pouring concrete basis adverse construction method steel bracket is see Fig. 1, 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 connecting platform 9 be connected with the steel column foot plate 10 on first segment steel column (being also bottom column), horizontal girder steel 1 is connected with the steel column foot plate 10 on first segment steel column by steel column foot connecting platform 9, described two horizontal girder steel supporting legs 2 are welded to connect at the two ends of horizontal girder steel 1 respectively, wherein the upper end of horizontal girder steel supporting leg 2 and horizontal girder steel 1 are welded to connect, the lower end of horizontal girder steel supporting leg 2 is provided with the horizontal girder steel supporting leg heel slab 11(be connected with the top of castinplace pile 7 and is also horizontal girder steel supporting leg suspension column flange), horizontal girder steel supporting leg 2 is connected with the top of castinplace pile 7 by horizontal girder steel supporting leg heel slab 11.
After the second first founds steel column, pouring concrete basis adverse construction method steel bracket is see Fig. 3: be with pouring concrete basis adverse construction method steel bracket difference after the first first vertical steel column, the second first after vertical steel column pouring concrete basis adverse construction method steel bracket be on the basis of the first, add a longitudinal girder steel 3 and a longitudinal girder steel supporting leg 4, one end of described longitudinal girder steel 3 and the interlude of horizontal girder steel 1 are welded to connect, longitudinal other end of girder steel 3 and the upper end of longitudinal girder steel supporting leg 4 are welded to connect, the lower end of longitudinal girder steel supporting leg 4 is provided with the longitudinal girder steel supporting leg heel slab 12(be connected with the top of castinplace pile 7 and is also longitudinal girder steel supporting leg suspension column flange), longitudinal girder steel supporting leg 4 is connected with the top of castinplace pile 7 by longitudinal girder steel supporting leg heel slab 12.
Shown in Figure 5, pouring concrete basis reversed construction method after described first vertical steel column, its step is as follows.
The design of pouring concrete basis adverse construction method steel bracket after step one, first vertical steel column, making, after described first vertical steel column, pouring concrete basis adverse construction method steel bracket comprises 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 connecting platform 9 be connected with the steel column foot plate 10 on first segment steel column 8, described two horizontal girder steel supporting legs 2 are welded to connect at the two ends of horizontal girder steel 1 respectively, wherein the upper end of horizontal girder steel supporting leg 2 and horizontal girder steel 1 are welded to connect, the lower end of horizontal girder steel supporting leg 2 is provided with the horizontal girder steel supporting leg heel slab 11(be connected with the top of castinplace pile 7 and is also horizontal girder steel supporting leg suspension column flange),
After first founding steel column, pouring concrete basis adverse construction method steel bracket is when designing, survey out steel column surrounding castinplace pile spacing and castinplace pile top mark high, the length of horizontal girder steel 1 is used as with steel column surrounding castinplace pile spacing, deduct the high height being used as steel bracket of a top mark with level ground design elevation on suspension column concrete, the sectional dimension of steel bracket will be designed in addition according to the weight of first segment steel column.First after vertical steel column, pouring concrete basis adverse construction method steel bracket is that raw material makes usually with hot rolled H-shaped, is the independent stable unit in a space.In addition, location for ease of pouring concrete basis adverse construction method steel bracket after first vertical steel column and first segment steel column regulates, when horizontal girder steel supporting leg heel slab 11(has longitudinal girder steel 3 and a longitudinal girder steel supporting leg 4, also comprise longitudinal girder steel supporting leg heel slab 12), steel column foot connecting platform 9 is also steel column foot flange with steel column foot plate 10() on connecting hole aperture preferably about 10mm larger than the diameter of the crab-bolt being connected them.
The location of pouring concrete basis adverse construction method steel bracket, installation after step 2, first vertical steel column; Namely after castinplace pile 7 has been constructed, adopt bulk-breaking lift-on/lift-off system pouring concrete basis adverse construction method steel bracket after the installation of the top of the castinplace pile of first segment steel column installation site surrounding first vertical steel column, after making first to found steel column, pouring concrete basis adverse construction method steel bracket props up the top being located at castinplace pile, and steel bracket is fixedly connected with firmly with castinplace pile.
When adopting bulk-breaking lift-on/lift-off system, suspender selects wire rope and snap ring, and should strength checking be carried out, intensity level must have enough intensity ensureing safely (when having longitudinal girder steel 3 and longitudinal girder steel supporting leg 4, lashing location will in the crossover sites of the horizontal girder steel 1 of steel bracket with longitudinal girder steel 3).
First after vertical steel column pouring concrete basis adverse construction method steel bracket in place after, when having longitudinal girder steel 3 and longitudinal girder steel supporting leg 4 with transit to horizontal girder steel supporting leg heel slab 11(, also comprise longitudinal girder steel supporting leg heel slab 12) correct, also to check a plan-position and absolute altitude again, ensure that they are within the deviation of regulation and stipulation.
In described step 2, first after vertical steel column, pouring concrete basis adverse construction method steel bracket can adopt overlap joint welding manner to fix a top being located at castinplace pile, namely according to the form of structure of pouring concrete basis adverse construction method steel bracket after first vertical steel column, with the cross axis of first segment steel column for benchmark, carry out steel bracket line setting at the top of castinplace pile, be then welded to connect with the stake top bar splicing of reinforcing bar by the top of pouring concrete basis adverse construction method steel bracket after first vertical steel column and castinplace pile.Specifically, when needing horizontal girder steel supporting leg heel slab 11(is had longitudinal girder steel 3 and longitudinal girder steel supporting leg 4, longitudinal girder steel supporting leg heel slab 12 is also comprised) and stake top reinforcement welding.
In described step 2, first after vertical steel column, pouring concrete basis adverse construction method steel bracket also can adopt stake top to bury crab-bolt mode underground and fix a top being located at castinplace pile, namely according to the form of structure of pouring concrete basis adverse construction method steel bracket after first vertical steel column, with the cross axis of first segment steel column for benchmark, castinplace pile top unwrapping wire, hole and bury chemical anchor bolts underground, by chemical anchor bolts, pouring concrete basis adverse construction method steel bracket after first vertical steel column is connected with the top of castinplace pile.When using chemical anchor bolts, level gauge be used to check the foundation pile top mark of castinplace pile high, to determine the length of chemical anchor bolts.Castinplace pile top unwrapping wire, hole and bury chemical anchor bolts underground time, unwrapping wire to be carried out according to base coordinate point and figure paper size on the stake top of castinplace pile, to punch according to the diameter of chemical anchor bolts and length Churn drill, the instruments such as air blowing cylinder, hairbrush are used to be cleaned out by the dirt in hole, clean to ensure in hole.After cleaning out in hole, first chemically-planted steel bar glue is put into hole, then rotate and implant chemical anchor bolts (by pouring concrete basis adverse construction method steel bracket after the bottom adjusting nut in chemical anchor bolts and top anchor nut leveling first vertical steel column, after leveling, fastening bottom adjusting nut and top anchor nut, and by pressing plate and horizontal girder steel supporting leg heel slab or the weld all around of longitudinal girder steel supporting leg heel slab, concrete installation process can see Fig. 6).
Step 3, the installation of first segment steel column 8, check; First make first segment steel column 8 in place, even if first segment steel column 8 is connected with the basic adverse construction method steel bracket of pouring concrete after first vertical steel column by steel column foot plate 10, steel column foot connecting platform 9 and adjustment bolt 15, adjust the absolute altitude of first segment steel column, misalignment of axe and verticality by adjusting bolt 15 simultaneously, first segment steel column installs and after having adjusted, between first segment steel column with first segment steel column, be connected temporary fixed girder steel 5 again, make all first segment steel columns link together (see Fig. 4) by temporary fixed girder steel 5;
Described first segment steel column 8 has round steel tubing string or two kinds, H profile steel post (see Fig. 4).In described step 3, if the round steel tubing string in first segment steel column 8 cannot form stable unit with H profile steel post (Core Walls Structure steel column) drawknot in first segment steel column 8 when mounted, consider on-the-spot installation location and quality requirement, first segment steel column installs and after having adjusted, also need be connected steel column diagonal brace 6(see Fig. 2 between first segment steel column 8 with horizontal girder steel 1).
In step 3, also has some attention following.
1, first segment steel column preliminary examination and supporting: after steel column is marched into the arena, constructor coordinates the main portions of the components such as on-site supervision engineer coupled columns, support to check as appearance and size, diameter of bolt hole and the position such as position, connector position comprehensively, can install after meeting design, related standards.
2, the inspection of orientation axis, absolute altitude: before installing, reply building orientation axis, support absolute altitude are checked, and can start to install after qualified.Orientation axis takes inside to establish the method for auxiliary axis to control, and absolute altitude at the bottom of post can adopt adjusting nut accurately to control.
3, first segment steel column is installed, is corrected: after first segment steel column in place, first adjust absolute altitude, then adjust misalignment of axe, finally adjust verticality; Add thin parallels at suspension column after steel column height mark adjustment to pad, and with steel cable tension, 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, carried out the installation quality inspection of steel column by supervising engineer, after errorless, carry out the cast work of volume of concrete foundation 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 invention: the present invention is to first segment steel column and first the installing and measuring, locate and fixedly have higher requirement of pouring concrete basis adverse construction method steel bracket after vertical steel column; when carrying out concrete pouring construction, guarantee that concrete vibrating can not make steel column and after first founding steel column, pouring concrete basis adverse construction method steel bracket offsets.
As follows about the quality control of pouring concrete basis reversed construction method after first vertical steel column.
The standard that first after vertical steel column, pouring concrete basis reversed construction method performs: the installation quality of first segment steel column should meet the technical requirements of " code for acceptance of construction quality of steel structures " (GB50205-2001), installs allowable variation in table 1.
Table 1 first segment steel column installs allowable error table (mm)
| Sequence number | Project | Allowable error |
| 1 | First segment steel column (being also bottom column) post lower shaft line offsets 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 | Bearing surface absolute altitude | ±3.0 |
| 6 | Bearing surface levelness | L/1000 |
Quality assurance measure: 1, install chemical anchor bolts at the horizontal girder steel supporting leg heel slab 11 of welding and longitudinal girder steel supporting leg heel slab 12() process in must ensure verticality and the degree of depth of chemical anchor bolts, can use spirit level, ruler to control, chemical anchor bolts are installing the installation that upper component can be carried out in rear in 24 hours.2, between adjacent holes, boring and chemically-planted steel bar glue is forbidden to inject synchronous construction.3, should clear up the dirt of pouring concrete basis adverse construction method steel bracket upper surface after first vertical steel column before first segment steel column in place in time, first the absolute altitude of the upper surface of pouring concrete basis adverse construction method steel bracket after vertical steel column, axis location should meet the requirement of drawing, specification.4, fielding welding should have draught exclusion device, and the rainy day must not welding.5, when building volume of concrete foundation, correcting verticality and the displacement of first segment steel column at any time with transit, as there is deviation, taking measures to correct in time.When 6, building volume of concrete foundation, the concrete rate of climb be controlled well, make it evenly increase.
Claims (6)
1. a first pouring concrete basis reversed construction method after vertical steel column, is characterized in that step is as follows:
The design of pouring concrete basis adverse construction method steel bracket after step one, first vertical steel column, making, after described first vertical steel column, pouring concrete basis adverse construction method steel bracket comprises 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 connecting platform (9) be connected with the steel column foot plate (10) on first segment steel column (8), described two horizontal girder steel supporting legs (2) are welded to connect the two ends in horizontal girder steel (1) respectively, wherein the upper end of horizontal girder steel supporting leg (2) and horizontal girder steel (1) are welded to connect, the lower end of horizontal girder steel supporting leg (2) is provided with the horizontal girder steel supporting leg heel slab (11) be connected with the top of castinplace pile (7),
The location of pouring concrete basis adverse construction method steel bracket, installation after step 2, first vertical steel column; Namely after castinplace pile (7) has been constructed, adopt bulk-breaking lift-on/lift-off system pouring concrete basis adverse construction method steel bracket after the installation of the top of the castinplace pile of first segment steel column installation site surrounding first vertical steel column, after making first to found steel column, pouring concrete basis adverse construction method steel bracket props up the top being located at castinplace pile, and steel bracket is fixedly connected with castinplace pile firmly;
Step 3, the installation of first segment steel column (8), check; First make first segment steel column (8) in place, even if first segment steel column (8) is connected with the basic adverse construction method steel bracket of pouring concrete after first vertical steel column by steel column foot plate (10), steel column foot connecting platform (9) and adjustment bolt (15), adjust the absolute altitude of first segment steel column, misalignment of axe and verticality by adjusting bolt (15) simultaneously, first segment steel column installs and after having adjusted, between first segment steel column with first segment steel column, be connected temporary fixed girder steel (5) again, all first segment steel columns are linked together by temporary fixed girder steel (5);
Step 4, employing concrete one-time-concreting molding construction method carry out the pouring construction of volume of concrete foundation.
2. pouring concrete basis reversed construction method after first vertical steel column according to claim 1, it is characterized in that: in described step 2, first after vertical steel column, pouring concrete basis adverse construction method steel bracket adopts overlap joint welding manner to fix a top being located at castinplace pile, namely according to the form of structure of pouring concrete basis adverse construction method steel bracket after first vertical steel column, with the cross axis of first segment steel column for benchmark, steel bracket line setting is carried out at the top of castinplace pile, then be welded to connect with the stake top bar splicing of reinforcing bar by the top of pouring concrete basis adverse construction method steel bracket after first vertical steel column and castinplace pile.
3. pouring concrete basis reversed construction method after first vertical steel column according to claim 1, it is characterized in that: in described step 2, first after vertical steel column, pouring concrete basis adverse construction method steel bracket adopts stake top to bury crab-bolt mode underground and fixes a top being located at castinplace pile, namely according to the form of structure of pouring concrete basis adverse construction method steel bracket after first vertical steel column, with the cross axis of first segment steel column for benchmark, at the top unwrapping wire of castinplace pile, hole and bury chemical anchor bolts underground, by chemical anchor bolts, pouring concrete basis adverse construction method steel bracket after first vertical steel column is connected with the top of castinplace pile.
4. pouring concrete basis reversed construction method after first vertical steel column according to claim 1, it is characterized in that: in described step 3, first segment steel column installs and after having adjusted, also need be connected steel column diagonal brace (6) between first segment steel column (8) with horizontal girder steel (1).
5. pouring concrete basis reversed construction method after first vertical steel column according to claim 1, it is characterized in that: after described first vertical steel column, pouring concrete basis adverse construction method steel bracket also comprises a longitudinal girder steel (3) and a longitudinal girder steel supporting leg (4), one end of described longitudinal girder steel (3) and the interlude of horizontal girder steel (1) are welded to connect, longitudinal other end of girder steel (3) and the upper end of longitudinal girder steel supporting leg (4) are welded to connect, the lower end of longitudinal girder steel supporting leg (4) is provided with the longitudinal girder steel supporting leg heel slab (12) be connected with the top of castinplace pile (7).
6. pouring concrete basis reversed construction method after first vertical steel column according to claim 1, is characterized in that: described first segment steel column (8) is round steel tubing string or H profile steel post.
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| CN201310097575.5A CN103174155B (en) | 2013-03-26 | 2013-03-26 | Reverse construction method for erecting steel column and pouring concrete foundation |
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| CN201310097575.5A CN103174155B (en) | 2013-03-26 | 2013-03-26 | Reverse construction method for erecting steel column and pouring concrete foundation |
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| CN103174155B true CN103174155B (en) | 2015-02-18 |
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| CN110016926A (en) * | 2018-01-10 | 2019-07-16 | 云南中乾集成房屋有限公司 | A kind of arrangement and method for construction of bearing capacity and the compound isolated footing of Floor screw under the steel column of duration simultaneous growth |
| CN111188498B (en) * | 2020-01-14 | 2021-08-20 | 广州华隧威预制件有限公司 | Construction method of evacuation platform |
| CN111719577B (en) * | 2020-05-22 | 2021-11-09 | 中国建筑第八工程局有限公司 | Construction method of building foundation |
| CN115506606A (en) * | 2022-10-28 | 2022-12-23 | 中国二十二冶集团有限公司 | Construction method for central steel column of high formwork of tubular structure |
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| JP4456257B2 (en) * | 2000-08-09 | 2010-04-28 | 新日本製鐵株式会社 | Semi-fixed direct foundation and pile foundation structure of steel column |
| JP4961604B2 (en) * | 2006-08-17 | 2012-06-27 | 千代田工営株式会社 | Pile foundation structure and pile head treatment method |
| CN202672340U (en) * | 2012-04-19 | 2013-01-16 | 河南天丰钢结构有限公司 | Column foot node structure of steel-structural latticed column |
| CN203174618U (en) * | 2013-03-26 | 2013-09-04 | 中建保华建筑有限责任公司 | Steel support for reverse construction of firstly erecting steel column and then pouring concrete foundation |
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