CN106939612A - A kind of large-scale Raft construction - Google Patents
A kind of large-scale Raft construction Download PDFInfo
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- CN106939612A CN106939612A CN201710192550.1A CN201710192550A CN106939612A CN 106939612 A CN106939612 A CN 106939612A CN 201710192550 A CN201710192550 A CN 201710192550A CN 106939612 A CN106939612 A CN 106939612A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/02—Flat foundations without substantial excavation
Abstract
A kind of large-scale Raft construction, belongs to raft board supporting structure technical field.It is characterized in that：Comprise the following steps：Step（1）, by base（7）It is welded on column（4）Bottom；Step（2）, bottom reinforcement bars colligation, then by base（7）Welded with bottom reinforcement bars；Step（3）, middle part tie-beam level is welded on column（4）Middle part；Step（4）, adjacent column merely on outer side（4）Between install diagonal brace（6）；Step（5）, middle part reinforcing bar colligation, and middle part reinforcing bar and middle part tie-beam are welded；Step（6）, by upper beam（8）Level is welded on column（4）Top；Step（7）, upper reinforcement colligation, and by upper reinforcement and upper beam（8）Welding；Step（8）, casting concrete.This large-scale Raft construction welding engineering amount is small, and welding quality is guaranteed, and easy construction, rolled steel dosage is few, short construction period and resistance to overturning is good.
Description
Technical field
A kind of large-scale Raft construction, belongs to raft board supporting structure technical field.
Background technology
In the construction of large-scale raft foundation, amount of reinforcement is big, and easily produce in work progress larger side force and
Load, resistance to overturning is poor, easily causes and laterally caves in, using traditional raft foundation split heads construction method amount of reinforcement
Greatly, welding engineering amount is big, and resistance to overturning is poor, and synchronization job face is small, operation inconvenience, long construction period.To ensure raft plate base
Resistance to overturning when plinth is constructed, while reducing amount of reinforcement, convenient operation and shortening construction period need to design a kind of new
Large-scale Raft construction.
The content of the invention
The technical problem to be solved in the present invention is：Overcoming the deficiencies in the prior art, there is provided a kind of amount of reinforcement is few, operation side
Just, short construction period and the good large-scale Raft construction of resistance to overturning.
The technical solution adopted for the present invention to solve the technical problems is：The large-scale Raft construction, its feature
It is：Comprise the following steps：
Step（1）, column and base are cut, and by tube chamber welds with base in column bottom；
Step（2）, bottom reinforcement bars colligation, and column is arranged, then base and bottom reinforcement bars are welded；
Step（3）, middle part tie-beam level is welded in the middle part of column；
Step（4）, install diagonal brace between adjacent column merely on outer side；
Step（5）, middle part reinforcing bar colligation, and the middle part tie-beam described in middle part reinforcing bar and step is welded；
Step（6）, upper beam level is welded on column top；
Step（7）, upper reinforcement colligation, and upper reinforcement and upper beam are welded；
Step（8）, casting concrete.
It is preferred that, step（1）Described in the maximum flatness deviation of cut surface of column be 2mm.
It is preferred that, step（1）Described in base length value maximum deviation be 5mm.
It is preferred that, step（2）Described in column be arranged through draw facility work line mode carry out, make column interval equal
Cloth.
It is preferred that, step（2）Described in the deviation of column spacing be 5mm to the maximum.
It is preferred that, step（3）Described in middle part connection depth of beam levelling carried out using spirit level, and in point with point
Between draw construction line, make middle part tie-beam level.
It is preferred that, described middle part tie-beam includes lateral connection beam and longitudinally connected beam, lateral connection beam and longitudinal direction
Tie-beam is vertically arranged.
It is preferred that, step（6）Described in upper beam highly carry out levelling using spirit level, and drawn between points
Construction line, makes upper beam level.
It is preferred that, described upper beam is channel-section steel, and upper beam is connected by the way of side is welded.
It is preferred that, step（2）In be mutually perpendicular to per the base on the downside of adjacent column.
Compared with prior art, the present invention is had an advantageous effect in that：
1st, this large-scale Raft construction makes diagonal brace only set by way of the tie-beam in the middle part of the setting of the middle part of column
Put the concentrfated load produced during can ensureing that its intensity, reinforcing bar hang in outside and side force is small, and welding engineering amount is small,
Welding quality is guaranteed, and easy construction, rolled steel dosage is few, short construction period and resistance to overturning is good.
2nd, the maximum flatness deviation of column cut surface is 2mm, so that ensure that the connection of column and base is more stablized,
Column cut surface injustice is avoided to counteract upper reinforcement.
3rd, base length maximum deviation is 5mm, makes the supporting surface between each base and lower rebar uniform and stable.
4th, column is set by way of drawing facility work line, so as to ensure column uniformly at intervals, the deviation of column spacing is most
Greatly 5mm, so that the bearing capacity of upper beam and middle part tie-beam is uniform, it is to avoid produce concentrfated load and side force.
5th, using spirit level levelling, and the tie-beam in the middle part of the mode of the line of setting construction between points is set is led to, it is ensured that
Middle part tie-beam level, and then ensure middle part reinforcing bar level, it is to avoid produce side force.
6th, middle part tie-beam includes vertically disposed lateral connection beam and longitudinally connected beam, to the support effect of middle part reinforcing bar
It is good.
7th, levelling is carried out using level meter, and is drawing the mode of construction line that upper beam is set between points, it is ensured that on
Portion's crossbeam level, and then ensure upper reinforcement level, it is to avoid produce side force.
8th, upper beam is channel-section steel, and resistance to overturning is high, and upper beam is welded by the way of side is welded with column, is applied
Work difficulty is low, and cost is relatively low, and resistance to overturning is high.
9th, the base on the downside of every two adjacent columns is mutually perpendicular to, and welding is easy, and welding capacity is small, low cost, economy
Good, stability is high.
Brief description of the drawings
Fig. 1 is the schematic perspective view of large-scale raft foundation.
Fig. 2 is the partial enlarged drawing at A in Fig. 1.
Fig. 3 is the partial enlarged drawing at B in Fig. 1.
In figure：1st, lower placing of reinforcement frame 2, middle part reinforced frame 3, upper placing of reinforcement frame 4, column 5, lateral connection beam 6, tiltedly
Support 7, base 8, upper beam 9, longitudinally connected beam.
Embodiment
Fig. 1 ~ 3 are highly preferred embodiment of the present invention, and 1 ~ 3 the present invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1：Large-scale raft foundation split heads, including spaced many root posts 4, the upper lateral on the top of column 4
Beam 8 and diagonal brace 6, also including middle part link, middle part link is horizontally disposed with, middle part link and the fixed company in the middle part of column 4
Connect, diagonal brace 6 is provided only between the adjacent column 4 in outside.The middle part of column 4 of this large-scale raft foundation split heads is provided with middle part connection
Frame, so as to only set between adjacent column 4 diagonal brace 6 can to ensure what its intensity, reinforcing bar were produced during hanging merely on outer side
Concentrfated load is small with side force, and welding engineering amount is small, and welding quality is guaranteed, and diagonal brace 6 is only arranged at outside, construction party
Just, rolled steel dosage is few, short construction period and resistance to overturning is good.
Column 4 selects I-steel, and is 1.5m per the adjacent spacing of column 4, and column 4 selects I-steel, and difficulty of construction is low,
And can increase the spacing of column 4, cost is relatively low, stability is high, deform it is small, bending resistance, it is anti-incline it is very strong.Column 4 and top
Crossbeam 8 is connected, so as to form rectangular frame.
Diagonal brace 6 is arranged between the column 4 of frame right angle apex and column 4 adjacent thereto.Diagonal brace 6 is close to framework
One end of column 4 at right-angled apices high skewed, the upper end of diagonal brace 6 and the top of the column 4 close to frame right angle apex
End is connected, and the other end is connected with column 4 adjacent thereto.Diagonal brace 6 uses angle steel, and diagonal brace 6 is welded with column 4.
The middle part of column 4 is provided with horizontal lateral connection beam 5 and longitudinally connected beam 9, lateral connection beam 5 and longitudinally connected beam
9 equal interval settings, and lateral connection beam 5 and longitudinally connected beam 9 be vertically arranged, so as to form middle part link.Lateral connection beam 5
Angle steel is selected with longitudinally connected beam 9, difficulty of construction is low, low cost, and tensile capacity is strong, resistance to overturning is high.Per adjacent
The spacing of two lateral connection beams 5 is equal with the spacing per two adjacent columns 4, and the spacing per two adjacent longitudinally connected beams 9 is
Per twice of the spacing of two adjacent upright 4, length direction of the lateral connection beam 5 along framework is set, width of the longitudinally connected beam 9 along framework
Spend direction to set, lateral connection beam 5 and longitudinally connected beam 9 are welded with column 4.
The lower section of column 4 is provided with base 7, and base 7 is horizontally disposed channel-section steel, and base 7 is corresponded with column 4, and bottom
The length of seat 7 is less than the spacing of column 4.It is vertically arranged, and is welded with column 4 per adjacent base 7, welding is easy, welding capacity
Small, cost is relatively low, good economy performance, and stability is high.
As shown in Figure 3：Upper beam 8 is channel-section steel, and resistance to overturning is high, and column 4 is welded sideways with upper beam 8, side
Welding procedure difficulty is relatively low, and cost is relatively low, and resistance to overturning is high.
When in use, the lower section of base 7 sets lower placing of reinforcement frame 1 to this large-scale raft foundation split heads, and lower placing of reinforcement frame 1 has two
Layer, base 7 is supported on lower placing of reinforcement frame 1.The top of upper beam 8 is provided with upper placing of reinforcement frame 3, and upper placing of reinforcement frame 3 also has two
Side, load is placed on the upside of upper beam 8.Middle part reinforced frame 2 has one layer, and the load of middle part reinforced frame 2 is placed on lateral connection beam 5 and longitudinal direction connects
Connect on beam 9.
A kind of large-scale Raft construction, comprises the following steps：
Step（1）, column 4 and base 7 are cut, and base 7 is welded on the bottom of column 4；
Split heads construction before, first calculate column 4 height, the high precision of column 4 to millimeter, and I-steel both sides flower point,
Snap the line, the cut surface of precise control column 4, the maximum flatness deviation of cut surface of column 4 is 2mm.Column 4 is using No. 10 I-shapeds
Steel, the length of column 4 is 1.778m.Base 7 is using No. 12 channel-section steels.The cutting of base 7 is carried out using cutting machine, in cutting machine
Side installs locating piece by measurement, and each Cutting Length is saw blade to the length of locating piece, so as to improve cutting effect
Rate, the length of single-base 7 is 50cm, and base length value maximum deviation is 5mm.Column 4 and base 7 are corresponded, cutting
After the completion of base 7 is welded on to the bottom of column 4.
Column 4 and base 7 are shifted to an earlier date into blanking, welds and completes before colligation bottom reinforcement bars, such welding quality is obtained
Ensure, also substantially reduce the duration.
Step（2）, bottom reinforcement bars colligation, and column 4 is arranged, then base 7 and bottom reinforcement bars are welded；
The reinforcing bar of the downside of column 4 is subjected to colligation, lower placing of reinforcement frame 1 is formed, lower placing of reinforcement frame 1 is by two layers, so as to ensure that bottom
The intensity in portion.After the completion of kidnapping, the mode just measured with meter ruler is in the upper layback facility work line of lower placing of reinforcement frame 1, and line of constructing exists
Many are transversely arranged at intervals with longitudinal direction in horizontal plane, so that multiple grids are formed in the upside of lower placing of reinforcement frame 1, so that
Ensure column 4 uniformly at intervals.Spacing per adjacent column 4 is 1.5m, and the deviation of the spacing of column 4 is 5mm to the maximum.Column
After the completion of arrangement, base 7 is welded with lower placing of reinforcement frame 1, so as to complete the fixation of column 4.Because the spacing of column 4 is
1.5m, can increase the spacing of column 4, cost is relatively low, and stability is high, deform it is small, bending resistance, it is anti-incline it is very strong.
Step（3）, middle part tie-beam level is welded on the middle part of column 4；
Middle part tie-beam uses 5X5 angle steel, and the elongated setting of middle part tie-beam.Middle part connection depth of beam is entered using spirit level
Row levelling, facility work line is being drawn after the completion of levelling between points, and mark is then set on each column 4 according to construction line
Note, middle part connects depth of beam and adjusts and weld according to mark, so as to ensure that middle part tie-beam is horizontally disposed with, it is to avoid middle part is connected
Beam is tilted so as to cause middle part reinforced frame 2 to tilt and produce side force, influences the intensity of split heads, the height tolerance of middle part tie-beam
In 3mm.
Middle part tie-beam includes lateral connection beam 5 and longitudinally connected beam 9, and lateral connection beam 5 is set in left-right direction, longitudinal direction
Tie-beam 9 is set along the longitudinal direction, the interval setting in left-right direction of lateral connection beam 5, and the spacing of lateral connection beam 5 is
1.5m, longitudinally connected beam 9 interval setting, and the spacing of longitudinally connected beam 9 is 3m along the longitudinal direction.
Step（4）, install diagonal brace 6 between adjacent column 4 merely on outer side；
Diagonal brace 6 is 5X5 angle steel, and the cutting method of diagonal brace 6 is identical with the cutting method of base 7, i.e., measured chi in cutting machine side
Very little and provide locating piece, the production degree cut every time is saw blade to the length of locating piece.The length of diagonal brace 6 is 2.4m, and maximum
Diagonal brace material deviation is 4mm.In the present embodiment, diagonal brace 6 is provided with four groups, and each group includes two diagonal braces 6.Due to whole
Large-scale raft foundation is cuboid framework, and each right angle of framework is equipped with a column 4, the column 4 of each right angle
It is connected to one group of diagonal brace 6.Each group of diagonal brace 6 is located on adjacent two sides of framework, and diagonal brace 6 upper end with being located at
The top welding of the column 4 of right angle, lower end and the bottom of column 4 welding adjacent thereto.Diagonal brace 6, which is set, is tightly arranged in frame
Between the column 4 of frame right-angled apices and column 4 adjacent thereto, rolled steel dosage is reduced, large-scale raft foundation weight is reduced.
Step（5）, middle part reinforcing bar colligation, and the middle part tie-beam described in middle part reinforcing bar and step 3 is welded；
Middle part reinforcing bar colligation, forms middle part reinforced frame 2, and middle part reinforced frame 2 and middle part tie-beam are welded.
Step（6）, the level of upper beam 8 is welded on the top of column 4；
The height of upper beam 8 sets identical with middle part connection depth of beam method to set up, i.e., using spirit level levelling, levelling is complete
Facility work line is being drawn between points after, and mark is then being set on each column 4 according to construction line, upper beam 8
Height is adjusted and welded according to mark, so as to ensure that upper beam 8 is horizontally disposed with, it is to avoid upper beam 8 tilts to cause
Placing of reinforcement frame 3 tilts and produces side force, influences the intensity of split heads, the height tolerance of upper beam 8 is in 3mm.
Upper beam 8 is using No. 8 I-steel, and upper beam 8 is elongated to be set.Upper beam 8 is arranged on the top of column 4, and
Welded by the way of side is welded with column 4.
Step（7）, upper reinforcement colligation, and upper reinforcement is welded with upper beam 8；
Placing of reinforcement frame 3 in upper reinforcement colligation, formation, welds upper placing of reinforcement frame 3 and upper beam 8 after the completion of colligation.Upper row
Reinforced frame 3 has two layers, so as to ensure that the intensity on large-scale raft foundation top.
Step（8）, casting concrete.
The above, is only presently preferred embodiments of the present invention, is not the limitation for making other forms to the present invention, appoints
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of large-scale Raft construction, it is characterised in that：Comprise the following steps：
Step（1）, cut column（4）And base（7）, and by base（7）It is welded on column（4）Bottom；
Step（2）, bottom reinforcement bars colligation, and arrange column（4）, then by base（7）Welded with bottom reinforcement bars；
Step（3）, middle part tie-beam level is welded on column（4）Middle part；
Step（4）, adjacent column merely on outer side（4）Between install diagonal brace（6）；
Step（5）, middle part reinforcing bar colligation, and by middle part reinforcing bar and step（3）Described in the welding of middle part tie-beam；
Step（6）, by upper beam（8）Level is welded on column（4）Top；
Step（7）, upper reinforcement colligation, and by upper reinforcement and upper beam（8）Welding；
Step（8）, casting concrete.
2. large-scale Raft construction according to claim 1, it is characterised in that：Step（1）Described in column
（4）The maximum flatness deviation of cut surface be 2mm.
3. large-scale Raft construction according to claim 1, it is characterised in that：Step（1）Described in base
（7）Length value maximum deviation be 5mm.
4. large-scale Raft construction according to claim 1, it is characterised in that：Step（2）Described in column
（4）Be arranged through draw facility work line mode carry out, make column（4）Uniformly at intervals.
5. the large-scale Raft construction according to claim 1 or 4, it is characterised in that：Step（2）Described in it is vertical
Post（4）The deviation of spacing is 5mm to the maximum.
6. large-scale Raft construction according to claim 1, it is characterised in that：Step（3）Described in middle part
Connect depth of beam and levelling is carried out using spirit level, and drawing construction line between points, make middle part tie-beam level.
7. large-scale Raft construction according to claim 6, it is characterised in that：Described middle part tie-beam includes
Lateral connection beam（5）And longitudinally connected beam（9）, lateral connection beam（5）With longitudinally connected beam（9）It is vertically arranged.
8. large-scale Raft construction according to claim 1, it is characterised in that：Step（6）Described in top
Crossbeam（8）Levelling highly is carried out using spirit level, and is drawing construction line between points, makes upper beam（8）Level.
9. large-scale Raft construction according to claim 8, it is characterised in that：Described upper beam（8）For
Channel-section steel, upper beam（8）It is connected by the way of side is welded.
10. large-scale Raft construction according to claim 1, it is characterised in that：Step（2）In per adjacent vertical
Post（4）The base of downside（7）It is mutually perpendicular to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710192550.1A CN106939612B (en) | 2017-03-28 | 2017-03-28 | A kind of large size Raft construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710192550.1A CN106939612B (en) | 2017-03-28 | 2017-03-28 | A kind of large size Raft construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106939612A true CN106939612A (en) | 2017-07-11 |
| CN106939612B CN106939612B (en) | 2019-04-26 |
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ID=59464347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710192550.1A Active CN106939612B (en) | 2017-03-28 | 2017-03-28 | A kind of large size Raft construction |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314095A (en) * | 2014-10-17 | 2015-01-28 | 中铁八局集团建筑工程有限公司 | Profile steel buttress for constructing super thick rafts, valve plate and construction method thereof |
| CN104806011A (en) * | 2015-05-25 | 2015-07-29 | 中国五冶集团有限公司 | Raft plate post-cast strip pouring template and construction method thereof |
| CN204780967U (en) * | 2015-06-06 | 2015-11-18 | 中机国能电力工程有限公司 | Be applied to high board position raft board basis of transformer substation's complex building |
-
2017
- 2017-03-28 CN CN201710192550.1A patent/CN106939612B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314095A (en) * | 2014-10-17 | 2015-01-28 | 中铁八局集团建筑工程有限公司 | Profile steel buttress for constructing super thick rafts, valve plate and construction method thereof |
| CN104806011A (en) * | 2015-05-25 | 2015-07-29 | 中国五冶集团有限公司 | Raft plate post-cast strip pouring template and construction method thereof |
| CN204780967U (en) * | 2015-06-06 | 2015-11-18 | 中机国能电力工程有限公司 | Be applied to high board position raft board basis of transformer substation's complex building |
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| Publication number | Publication date |
|---|---|
| CN106939612B (en) | 2019-04-26 |
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