CN202577761U - Compound large-section concrete filled steel tube column - Google Patents
Compound large-section concrete filled steel tube column Download PDFInfo
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- CN202577761U CN202577761U CN 201220161936 CN201220161936U CN202577761U CN 202577761 U CN202577761 U CN 202577761U CN 201220161936 CN201220161936 CN 201220161936 CN 201220161936 U CN201220161936 U CN 201220161936U CN 202577761 U CN202577761 U CN 202577761U
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Abstract
The utility model relates to a compound large-section concrete filled steel tube column which comprises an outer steel pipe and inner steel pipes, wherein the outer steel pipe and the inner steel pipes are arranged vertically. The inner steel pipes are vertically arranged in a channel of the outer steel pipe. Cavities are formed between the outer steel pipe and the inner steel pipes, and concrete are poured into the cavities and channels of the inner steel pipes. A plurality of sections of branch outer steel pipes are connected in an overlapped mode to form the outer steel pipe, and a plurality of sections of branch inner steel pipes are connected in the overlapped mode to form the inner steel pipes. The branch outer steel pipes of the outer steel pipe and the branch inner steel pipes of each inner steel pipe are equal in number and correspond in a one-to-one mode. The first section of the branch outer steel pipes is shorter than a branch inner steel pipe corresponding to the first section of the branch outer steel pipes. The lengths of the other sections of the branch inner steel pipes and the lengths of corresponding branch outer steel pipes enable each section of the branch inner steel pipes to extend out of a corresponding branch outer steel pipe after overlap connection.
Description
Technical field
The utility model belongs to technical field of civil engineering, relates in particular to a kind of compound heavy in section steel core concrete column.
Background technology
In technical field of civil engineering, the cross section maximum length all is called the heavy in section steel core concrete column greater than 1 meter steel core concrete column.Can produce a series of problem during existing heavy in section steel core concrete column: owing to need the perfusion strong concrete in the steel core concrete column of heavy in section, so belong to the concrete in mass member; The concrete in mass member is because its cross section is big, and cement consumption is big, and the heat of hydration that hydrated cementitious discharges can produce bigger variations in temperature, especially is easy to generate thermal cracking, influences construction quality.Because hydration heat of cement causes concreting body internal temperature acute variation; Contraction in concreting body early-age plastic shrinkage and the course of hardening is increased; Make concreting body temperature inside-shrinkage stress acute variation, thereby cause the concreting body that the phenomenon in crack takes place.Moreover the surface radiating condition of heavy in section steel core concrete column is better, and heat can distribute in atmosphere, thereby temperature rises less; And inner concrete is relatively poor owing to radiating condition, and heat distributes few, thereby the temperature rising is more, and inside and outside formation temperature gradient forms inside and outside the constraint, thereby causes concrete to produce the crack.
For this reason, a kind of compound heavy in section steel core concrete column need be provided.
Summary of the invention
The purpose of the utility model is to provide a kind of compound heavy in section steel core concrete column, and its heat radiation is more even, and temperature difference between inside and outside concrete is less in the post; And quality is good, and durability is strong.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of compound heavy in section steel core concrete column, it comprises the outer steel pipe and the interior steel pipe of setting, said interior steel pipe is erected in the pipeline of said outer steel pipe; Outside said steel pipe and said in equal fluid concrete in the pipeline of steel pipe in the cavity that forms between the steel pipe and in said;
Said outer steel pipe by multistage exceptionally steel tube lapping form, said in steel pipe divide by multistage in steel tube lapping form, the exceptionally steel pipe of said outer steel pipe with each said in the branch of steel pipe the number of steel pipe equate and correspondence one by one;
First section exceptionally the length of steel pipe is less than the length of steel pipe in its corresponding branch, and the length of steel pipe and corresponding exceptionally steel pipe makes that steel pipe is all from exceptionally stretching out the steel pipe accordingly in the every section branch in overlap joint back in other sections branch.
Preferably, the cross section of said outer steel pipe is a day font; The number of steel pipe is 2 in said, two said in steel pipe be erected in two branch chambeies of said outer steel pipe respectively and the distribution that is mutually symmetrical.
Preferably, first section said exceptionally steel pipe is shorter than steel pipe in its corresponding said branch of institute; The interior steel pipe equal in length of the branch that other said exceptionally steel pipes are corresponding with it.
Preferably, all said exceptionally steel pipe identical length etc.; Except that the interior steel pipe of the branch of first section said exceptionally steel pipe correspondence, the interior steel pipe identical length of other branch etc.
The beneficial effect of the utility model is: owing to be provided with interior steel pipe, thereby the concrete in the sustained height scope can be built in gradation, reduced the sectional dimension of concrete component.Especially steel pipe all exceeded one section with respect to its corresponding exceptionally steel pipe in each divided; Like this in building steel pipe and outside during maintenance behind the concrete between the steel pipe; Interior steel pipe just can form stack effect; Increase inner concrete heat radiation, reduce concrete internal-external temperature difference, guarantee the quality and the durability of compound heavy in section steel core concrete column.
Description of drawings
Fig. 1 is the cross sectional representation of the compound heavy in section steel core concrete column of an embodiment of the utility model;
Fig. 2 is first section of compound heavy in section steel core concrete column of an embodiment of the utility model exceptionally scheme of installation of steel pipe in steel pipe and its corresponding branch;
Fig. 3 is the sketch map of building the first time of the compound big cross section steel pipe concrete column of an embodiment of the utility model, has wherein shown first section exceptionally steel pipe and the interior steel pipe of its corresponding branch;
Fig. 4 is the sketch map of building for the second time in embodiment illustrated in fig. 3, wherein shown first section with second section exceptionally steel pipe and the interior steel pipe of its corresponding respectively branch;
Fig. 5 is the sketch map of building for the third time in embodiment illustrated in fig. 3, has wherein shown exceptionally steel pipe in steel pipe and its corresponding respectively branch of first, second and third section.
The specific embodiment
Introduce the preferred embodiment of the utility model in detail below in conjunction with accompanying drawing.
Shown in Figure 1 is the cross section of the compound heavy in section steel core concrete column of an embodiment of the utility model, and wherein the length on long limit is 2 meters, and the length of minor face is 1.5 meters.From this cross section, can find out; This compound heavy in section steel core concrete column comprises the outer steel pipe 10 of day font cross section; That is, on the basis of the cross section of rectangle, the center on long limit be provided with a transverse slat 100 perpendicular to long limit will be somebody's turn to do outside the chamber of steel pipe 10 formation be divided into two; This transverse slat 100 the strength and stiffness that can increase steel pipe column to a certain extent are set.The interior steel pipe 20,30 of two circular cross-sections is set respectively in two branch chambeies that are divided into by transverse slat 100, and these two interior steel pipes 20,30 are symmetrical set (like Fig. 1, shown in Figure 2) with respect to this transverse slat 100.
Certainly in other embodiment of the utility model, transverse slat 100 is not set or several transverse slats 100 are set more and be fine yet.In other embodiments, the cross section of interior steel pipe also can be other shapes, and the number of interior steel pipe also can be one or more a plurality of, as long as distribute symmetrically and evenly.
The job practices of this compound heavy in section steel core concrete column comprises the steps:
(1) the outer steel pipe 10 of making heavy in section steel core concrete column, this outer steel pipe 10 is made up of the exceptionally steel pipe of multistage day shaped sections, that is makes exceptionally steel pipe of each section respectively.Because the cross section is big, these exceptionally steel pipe in fact be similar to steel cylinder.
In this embodiment, each steel pipe in the branch of corresponding two symmetrical distributions of steel pipe exceptionally.Certainly in other embodiment of the utility model, also can three or the interior steel pipes more than three be set equably, certainly each steel pipe in corresponding three or the branch more than three of steel pipe exceptionally at this moment according to the practice of construction needs.Perhaps, in other embodiments, the interior steel pipe of a diameter less than outer steel pipe can only be set also, correspondingly each steel pipe in the corresponding branch of steel pipe exceptionally at this moment.
Be illustrated in figure 2 as first section exceptionally steel pipe 11 and the front view that divides interior steel pipe 21,31.Wherein divide interior steel pipe 21,31 equal in length and all be longer than exceptionally steel pipe 11.Behind concreting during maintenance, steel pipe 21,31 will form stack effect in dividing, and can discuss in this step below like this.
Except that first section, steel pipe equal in length in the exceptionally steel pipe of other sections branch corresponding with it, because steel pipe has formed difference in height with steel pipe exceptionally in first section branch, therefore after the splicing well of each section of back, this difference in height still exists.
Certainly, in other embodiment of the utility model, the length of steel pipe in other except that first section divide can be done other selections as long as make that steel pipe can stretch out its corresponding exceptionally steel pipe in the back is installed to be divided.Preferably, the equal in length of other each section branch steel pipes except that first section, each section exceptionally steel pipe length also equates, convenient like this making, and also also more convenient when construction and installation.
(2) as shown in Figure 3, with first section exceptionally steel pipe 11 be erected at design attitude, steel pipe 21,31 in first section branch of correspondence is set up respectively in two branch chambeies, steel pipes 21,31 are with respect to transverse slat 100 symmetries in two branches.Steel pipe 21,31 stretches out the certain length of cavity that outer inwall steel pipe 11 forms respectively in dividing.
(3) to first section exceptionally steel pipe 21 in steel pipe 11 and the first section branch, space fluid concrete between 31.At this moment, dispel the heat to air through steel pipe 1 exceptionally near the concrete of steel pipe 11 exceptionally; And steel pipe 21,31 forms stack effect in dividing, and inner concrete is dispelled the heat to air through these two chimneys, thereby makes inside and outside heat radiation evenly, and good heat dissipation effect, prevents that concrete from producing the crack because of internal-external temperature difference is excessive.
(4) first section exceptionally the top of steel pipe 11 be fixedly connected second section exceptionally steel pipe 12, the top of steel pipe 21,31 is fixedly connected steel pipe 22,32 in second section branch respectively in first section branch of correspondence.The equal in length of second section interior steel pipe 22,32 of the branch that exceptionally steel pipe 12 is corresponding with it; Because steel pipe 21,31 has formed difference in height in first section branch that exceptionally steel pipe 11 is corresponding with it; Therefore this moment, steel pipe 22,32 also exceeds second section exceptionally steel pipe 12 1 segment distance in second section branch.
(5) fluid concrete in the steel pipe 21,31 in first section branch that exceptionally steel pipe 11 is corresponding, cast highly arrive with till the top of first section outer steel pipe 11 is concordant; Fluid concrete in steel pipe 22, the space between 32 in second section branch that exceptionally steel pipe 12 is corresponding with it again.At this moment, steel pipe 22, the 32 same stack effects that form in dividing make second section exceptionally concrete distribute heat in air in the steel pipe 21,31 in the inner concrete of steel pipe 12 and the first section branch; Near second section exceptionally steel pipe 12 concrete through its to the air distribute heat.
(6) second section exceptionally the top of steel pipe 12 be fixedly connected the 3rd section exceptionally steel pipe 13, the top of steel pipe 22,32 correspondingly is fixedly connected steel pipe 23,33 in the 3rd section branch that exceptionally steel pipe 12 is corresponding in second section branch that exceptionally steel pipe is corresponding.
(7) fluid concrete in the steel pipe 22,32 in second section branch that exceptionally steel pipe 12 is corresponding, cast highly arrive and second section top flush position of steel pipe 12 exceptionally; Fluid concrete in steel pipe 23, the space between 33 in the 3rd section branch that exceptionally steel pipe 13 is corresponding with it.
(8) by that analogy, steel pipe installs in all exceptionally steel pipes, branch, and this heavy in section steel core concrete column cast finishes.
Compound heavy in section steel core concrete column under this structure; Reduced the concrete sectional dimension of heavy in section post graded casting; And interior steel pipe can form stack effect; Increase inner concrete heat radiation, reduced concrete internal-external temperature difference, guaranteed the quality and the durability of compound heavy in section steel core concrete column.
What more than describe only is the preferred embodiment of the utility model, can not be regarded as the restriction to the utility model protection domain.Any equivalents and replacement for technique scheme are all within the protection domain of the utility model.
Claims (4)
1. compound heavy in section steel core concrete column, its characteristic is being: comprise the outer steel pipe and the interior steel pipe of setting, said in steel pipe be erected in the pipeline of said outer steel pipe; Outside said steel pipe and said in equal fluid concrete in the pipeline of steel pipe in the cavity that forms between the steel pipe and in said;
Said outer steel pipe by multistage exceptionally steel tube lapping form, said in steel pipe divide by multistage in steel tube lapping form, the exceptionally steel pipe of said outer steel pipe with each said in the branch of steel pipe the number of steel pipe equate and correspondence one by one;
First section exceptionally the length of steel pipe is less than the length of steel pipe in its corresponding branch, and the length of steel pipe and corresponding exceptionally steel pipe makes that steel pipe is all from exceptionally stretching out the steel pipe accordingly in the every section branch in overlap joint back in other sections branch.
2. compound heavy in section as claimed in claim 1 steel core concrete column is characterized in that: the cross section of said outer steel pipe is a day font; The number of steel pipe is 2 in said, two said in steel pipe be erected in two branch chambeies of said outer steel pipe respectively and the distribution that is mutually symmetrical.
3. according to claim 1 or claim 2 compound heavy in section steel core concrete column, it is characterized in that: first section said exceptionally steel pipe is shorter than steel pipe in its corresponding said branch of institute; The interior steel pipe equal in length of the branch that other said exceptionally steel pipes are corresponding with it.
4. compound heavy in section as claimed in claim 1 steel core concrete column is characterized in that: all said exceptionally steel pipe identical length etc.; Except that the interior steel pipe of the branch of first section said exceptionally steel pipe correspondence, the interior steel pipe identical length of other branch etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220161936 CN202577761U (en) | 2012-04-17 | 2012-04-17 | Compound large-section concrete filled steel tube column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220161936 CN202577761U (en) | 2012-04-17 | 2012-04-17 | Compound large-section concrete filled steel tube column |
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| Publication Number | Publication Date |
|---|---|
| CN202577761U true CN202577761U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220161936 Expired - Lifetime CN202577761U (en) | 2012-04-17 | 2012-04-17 | Compound large-section concrete filled steel tube column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089273A (en) * | 2013-01-14 | 2013-05-08 | 西南交通大学 | Construction method of longitudinal opening long-span large-volume concrete tunnel lining structure |
-
2012
- 2012-04-17 CN CN 201220161936 patent/CN202577761U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089273A (en) * | 2013-01-14 | 2013-05-08 | 西南交通大学 | Construction method of longitudinal opening long-span large-volume concrete tunnel lining structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
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| CX01 | Expiry of patent term |