CN105649239A - Multi-bundle-shaped ultra-high performance concrete-confined normal concrete cross-shaped column and cross-shaped short-leg shear wall - Google Patents
Multi-bundle-shaped ultra-high performance concrete-confined normal concrete cross-shaped column and cross-shaped short-leg shear wall Download PDFInfo
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- CN105649239A CN105649239A CN201610156191.XA CN201610156191A CN105649239A CN 105649239 A CN105649239 A CN 105649239A CN 201610156191 A CN201610156191 A CN 201610156191A CN 105649239 A CN105649239 A CN 105649239A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
- E04B2/66—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete characterised by special cross-section of the elongated members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/562—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with fillings between the load-bearing elongated members
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Abstract
The invention discloses a multi-bundle-shaped ultra-high performance concrete-confined normal concrete cross-shaped column which comprises a cross-shaped concrete special-shaped column, wherein a column framework of the cross-shaped concrete special-shaped column comprises outer wrapping plates wrapping the outside of the special-shaped column and inner partition plates for partitioning an inner space of the cross section of the special-shaped column; the column framework is molded by pouring ultra-high performance concrete; the outer wrapping plates and the inner partition plates separate the cross section of the special-shaped column into a plurality of independent units, to form a plurality of independent bundle-shaped split columns; corresponding orthogonal inner partition plates are arranged in two column leg intersection regions of the cross-shaped concrete special-shaped column. Similarly, the invention further discloses a cross-shaped short-leg shear wall. According to the multi-bundle-shaped ultra-high performance concrete-confined normal concrete cross-shaped column and cross-shaped short-leg shear wall, a self-restraint function of the concrete is fully utilized, and an outer wrapping restraining effect of steels on the concrete is replaced, so as to save the steels and reduce the costs; based on the excellent compactness, pouring property and high strength of UHPC, a multibundle shape can significantly improve the bearing capacity and durability of the special-shaped column or short-leg shear wall structure, and can realize the characteristics of simple structure, novel materials, superior performance and the like.
Description
Technical field
The invention belongs to construction engineering technical field, particularly relate to a kind of many pencils ultra-high performance concrete constraint normal concrete ten shape post and ten shape shear wall with short piers.
Background technology
Modern civilization has expedited the emergence of people's transformation to things aesthetic standards, and as the vertical supporting member post in frame structure, its traditional form is square-section, and the stupefied prominent metope of post have impact on the performance of building function and the discomfort of visual perception. Special-shaped column structure has and the feature of infilled wall uniform thickness, therefore avoids the stupefied prominent metope of post, increases the actually used area in room, improves " percentage of usable dwelling area ", the deep favor by owner and user. Along with the commercial building such as house, office constantly develops towards high-rise and high-rise direction, the width of special-shaped column structure post limb certainly will strengthen, and thereby produces mechanical property and building uses the contradiction between function, limit promoting the use of of special-shaped column structure.
Shear wall with short piers is often referred to the shear wall that ratio is 5��8 of wall limb depth of section and thickness, and as the interim form of Special-Shaped Column and general shear wall, it is widely used in high residential building and large-scale commercial building, and the importance of structure is self-evident. Similar with Special-Shaped Column, the section form of shear wall with short piers is also diversified, currently mainly with L, T, ten, Z-section form be arranged in the point of intersection of room partitioning wall. Growth and rapid development of economy along with urban population, architecture ensemble also constantly develops towards executive information systems direction, but land used anxiety also needs the demand that meets people to " percentage of usable dwelling area ", this just proposes more stringent requirement to structure, namely under the premise of only big increase shear wall with short piers cross-sectional width, ensure the demand of its bearing capacity, this issue handling is improper, then certainly will limit promoting the use of of short-shear wall structure.
In order to meet the demand of structural-load-carrying capacity, many enhancement mode measures are used to Special-Shaped Column or short-shear wall structure, and these measures mainly include improving concrete strength (as adopted high-strength concrete), increasing steel ratio (as adopted steel reinforced concrete) and use confined concrete (such as concrete filled steel tube) etc.Although high-strength concrete Special-Shaped Column or shear wall with short piers can improve post or the bearing capacity of wall itself, but the fragility of high-strength concrete is very unfavorable to the anti-seismic performance of structural column or body of wall itself. Certainly built-in shaped steel can make up the deficiency of high-strength concrete in this respect, but another prominent question is also following, namely in elongated Special-Shaped Column post limb or shear wall with short piers wall limb, arrange that more shaped steel is by very difficult to the steel bar arrangement of beam column node area or beam-wall node area, thus cause that the space of node area is narrower and small, when this is to concreting, wherein the decline of coarse aggregate is very unfavorable, easily causes joint cores the phenomenons such as cavity, honeycomb occur. Obviously, adopt confined concrete technology can avoid the generation of above-mentioned phenomenon better, steel pipe concrete profiled pile or shear wall with short piers have acted on the advantage of concrete filled steel tube, but make consumption then seems economical not at steel, more very part is in that the phenomenon of 90 degree of inner corner trims easily occur in steel pipe concrete profiled pile or shear wall with short piers, it may result in steel pipe, and concrete effect of contraction is not strong, and composite behaviour is deteriorated. Although corresponding construction measure (as arranged ribbed stiffener and binding bar) is also suggested the performance for improving steel pipe concrete profiled pile or shear wall with short piers, but steel pipe can be caused bigger damage by these measures, and processing cost also increases considerably. Additionally, the steel pipe of outsourcing processes also extremely loaded down with trivial details in steel pipe concrete profiled pile later stage anticorrosion, fire prevention, if dealing with improperly, then extremely it is unfavorable for endurance quality and the fire protecting performance of Special-Shaped Column or short-shear wall structure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of simple structure, many pencils ultra-high performance concrete convenient, function admirable, economy of constructing retrains normal concrete ten shape post and ten shape shear wall with short piers.
For solving above-mentioned technical problem, the present invention is by the following technical solutions: many pencils ultra-high performance concrete constraint normal concrete ten shape post, including ten shape concrete profiled piles, the cylinder skeleton of ten shape concrete profiled piles includes the skin plating being coated on outside Special-Shaped Column and the internal partition separating Special-Shaped Column cross-sectional internal space, cylinder skeleton is built molding by ultra-high performance concrete, and the skin plating of composition skeleton and internal partition connect with each other; Special-Shaped Column cross section is divided into multiple independent cell cube by skin plating and internal partition, forms the independent separate body post of multiple pencil; Two post limb confluences of ten shape concrete profiled piles arrange corresponding orthogonal internal partition.
Internal partition is perpendicular to each post limb short transverse of Special-Shaped Column and is parallel to post limb width.
In each cell cube, place reinforcement cage skeleton, and adopt normal concrete to build closely knit by each unit body.
Reinforcement cage skeleton is rectangle, longitudinal reinforcement and horizontal hoop colligation form.
Ten shape concrete profiled piles are the center pillar in Framed Structure with Special-Shaped Columns.
Many pencils ultra-high performance concrete constraint normal concrete ten shape shear wall with short piers, including ten shape concrete shear wall with short piers, the wall skeleton of ten shape concrete shear wall with short piers includes the skin plating being coated on outside shear wall with short piers and the internal partition separating shear wall with short piers cross-sectional internal space, wall skeleton is built molding by ultra-high performance concrete, and the skin plating of composition skeleton and internal partition connect with each other; Shear wall with short piers cross section is divided into multiple independent cell cube by skin plating and internal partition, forms the independent separate body wall of multiple pencil; Two wall limb confluences of ten shape concrete shear wall with short piers arrange corresponding orthogonal internal partition.
Internal partition is perpendicular to each wall limb short transverse of shear wall with short piers and is parallel to wall limb width.
In each cell cube, place reinforcement cage skeleton, and adopt normal concrete to build closely knit by each unit body.
Reinforcement cage skeleton is rectangle, longitudinal reinforcement and horizontal hoop colligation form.
For the deficiency that existing ten shape concrete profiled piles exist, inventor has devised a kind of many pencils ultra-high performance concrete constraint normal concrete ten shape post, including ten shape concrete profiled piles, the cylinder skeleton of ten shape concrete profiled piles includes the skin plating being coated on outside Special-Shaped Column and the internal partition separating Special-Shaped Column cross-sectional internal space, and cylinder skeleton is built molding by ultra-high performance concrete; Special-Shaped Column cross section is divided into multiple independent cell cube by skin plating and internal partition, forms the independent separate body post of multiple pencil; Two post limb confluences of ten shape concrete profiled piles arrange corresponding orthogonal internal partition. Similarly, inventor have also been devised a kind of many pencils ultra-high performance concrete constraint normal concrete ten shape shear wall with short piers.
The present invention achieves increasing substantially of ten shape posts or wall bearing capacity by three aspects:
<1>use the ultra-high performance concrete of high compactness and high intensity as the skin plating of ten shape posts or wall and internal partition, form the constraint skeleton of internal normal concrete, and the two " height " has exactly promoted ultra-high performance concrete to may replace conventional steel to concrete constraint material, overcome the defects such as outside steel pipe corrosion resistance is poor, apyrous is bad, be also beneficial to saving steel and reduce the expense needed for construction costs and later maintenance;
<2>ultra-high performance concrete has followed the feature of concrete pourability, it can be used as internal partition that the inner space of ten shape posts or wall is carried out subregion, form independent separate body post or the wall of multiple pencil, less cylinder or wall section can play the effect that constraint is compacted, and are conducive to the effect of restraint that concrete material is higher; And by arranging corresponding orthogonal internal partition at two post limbs or wall limb confluence, it is possible to decrease the adverse effect of ten shape posts or 90 degree of inner corner trim coupled columns of wall or wall bearing capacity, it is greatly improved ten shape concrete profiled piles or the bearing capacity of ten shape shear wall with short piers;
<3>at each bundle independent separate body post or configurable polytype strengthening measure within the walls, such as reinforcement cage skeleton, type steel skeleton, steel pipe, pvc pipe and high-strength concrete etc., ten shape posts or the wall design form of different bearer power demand are conveniently met.
In a word, the present invention makes full use of concrete from binding function (ultra-high performance concrete constraint normal concrete), replaces steel to concrete outsourcing effect of contraction with this, and saving steel also reduces cost; Based on the excellent density of ultra-high performance concrete, building property and high intensity, many pencils can significantly improve bearing capacity and the endurance quality of Special-Shaped Column or short-shear wall structure, has the features such as simple in construction, material novelty, superior performance. Additionally, can be realized the requirement of building industrialization by prefabricated ultra-high performance concrete cylinder or wall skeleton, frivolous high-strength ultra-high performance concrete is conducive to mechanization to lift simultaneously, can effective accelerating construction progress.
Accompanying drawing explanation
Fig. 1 is that the present invention many pencils ultra-high performance concrete retrains the cylinder skeleton of normal concrete ten shape post or the wall skeleton schematic cross-section of ten shape shear wall with short piers.
Fig. 2 is the schematic cross-section of many pencils ultra-high performance concrete constraint normal concrete ten shape post or ten shape shear wall with short piers.
In Fig. 1 and Fig. 2: 1 internal partition one, 2 internal partitions two, 3 internal partitions three, 4 internal partitions four, 5 internal partitions five, 6 internal partitions six, 7 internal partitions seven, 8 internal partitions eight, 9 skin platings, 10 longitudinal reinforcements, 11 horizontal hoops, 12 normal concretes.
Detailed description of the invention
Basic structure
As depicted in figs. 1 and 2, many pencils ultra-high performance concrete constraint normal concrete ten shape post of the present invention, including ten shape concrete profiled piles (center pillar in Framed Structure with Special-Shaped Columns), the cylinder skeleton of ten shape concrete profiled piles includes the skin plating being coated on outside Special-Shaped Column and the internal partition separating Special-Shaped Column cross-sectional internal space, cylinder skeleton is by the prefabricated components of ultra-high performance concrete primary concreting molding, and the skin plating of composition skeleton and internal partition connect with each other; Internal partition in Special-Shaped Column post limb short transverse according to certain interval vertical and is parallel to post limb width and is arranged in each post limb, and Special-Shaped Column cross section is divided into multiple independent cell cube by skin plating and internal partition, forms the independent separate body post of multiple pencil; Two post limb confluences of ten shape concrete profiled piles arrange corresponding orthogonal internal partition. In each cell cube, place the reinforcement cage skeleton of appropriateness arrangement of reinforcement, and adopt normal concrete to build closely knit by each unit body.
Similar, as depicted in figs. 1 and 2, many pencils ultra-high performance concrete constraint normal concrete ten shape shear wall with short piers of the present invention, including ten shape concrete shear wall with short piers, the wall skeleton of ten shape concrete shear wall with short piers includes the skin plating being coated on outside shear wall with short piers and the internal partition separating shear wall with short piers cross-sectional internal space, wall skeleton is by the prefabricated components of ultra-high performance concrete primary concreting molding, and the skin plating of composition skeleton and internal partition connect with each other; Internal partition in shear wall with short piers wall limb short transverse according to certain interval vertical and is parallel to wall limb width and is arranged in each wall limb, shear wall with short piers cross section is divided into multiple independent cell cube by skin plating and internal partition, forms the independent separate body wall of multiple pencil; Two wall limb confluences of ten shape concrete shear wall with short piers arrange corresponding orthogonal internal partition. In each cell cube, place the reinforcement cage skeleton of appropriateness arrangement of reinforcement, and adopt normal concrete to build closely knit by each unit body.
Design principle
As shown in Figure 1, in the cylinder skeleton of Special-Shaped Column and the wall skeleton of shear wall with short piers, internal partition one, internal partition two, internal partition three, internal partition four are arranged in outside the confluence of shaped section pairwise orthogonal post (wall) limb, and each internal partition is mutually communicated with the skin plating in corresponding sides, the core space crossed is stood alone as a separated column (wall), thus eliminates the adverse effect of the ten 90 degree of inner corner trims in shape post (wall) cross section; Additionally, interior internal partition one, internal partition three, internal partition five, internal partition seven and internal partition two, internal partition four, internal partition six, internal partition eight or three need to be respectively perpendicular to horizontal columns (wall) limb, vertical post (wall) limb limb high and be parallel to the limb width of corresponding post (wall) limb. The cylinder of Special-Shaped Column and each internal partition of the wall skeleton of shear wall with short piers are arranged along orthogonal two posts (wall) limb at a certain distance according to the needs of bearing capacity, if structure upper load is bigger, then the spacing of each internal partition is reduced, corresponding increase internal partition quantity, otherwise, then amplify spacing and reduce quantity; By arranging skin plating in ten shape post (wall) external body, form the function within outsourcing constraint, and internal partition is mutually communicated into skin plating as a whole skeleton; By to ten shape skeleton formworks and to building ultra-high performance concrete in it, adopting steam curing aftershaping is ten shape ultra-high performance concrete post (wall) body skeletons.This production process should produce in the factory for prefabrication of high gauge, it is ensured that component quality. As shown in Figure 2, on the basis of Fig. 1 post (wall) body skeleton, as desired by configuring corresponding longitudinal reinforcement and horizontal hoop, and will be positioned in each pencil separated column (wall) by the rectangle reinforcement cage skeleton of both colligations, further enhance the bearing capacity of ten shape posts (wall); Afterwards, in it, normal concrete is built in space, is consequently formed many pencils ultra-high performance concrete constraint normal concrete ten shape post and ten shape shear wall with short piers.
Production and application
1) ten shape post cylinders as shown in Figure 1 or ten shape wall wall skeletons are first formed at factory for prefabrication's formwork, in post limb or the wall limb confluence of both direction, one rectangle separated column or wall need to be set, split by orthogonal four road internal partitions, need in each post limb or wall limb, to arrange internal partition according to a determining deviation again according to design, in skin plating and internal partition, build ultra-high performance concrete afterwards and adopt steam curing molding;
2) ten shape ultra-high performance concrete cylinders or wall skeleton are lifted the ad-hoc location to the center pillar position or short-shear wall structure of Framed Structure with Special-Shaped Columns, adopt built-in connection ten shape post cylinder skeletons or ten shape wall wall skeletons to be attached with basis or lower floor;
3) according to certain specification colligation rectangle reinforcement cage skeleton, this reinforcement cage skeleton is made up of the horizontal hoop of the longitudinal reinforcement being distributed in four angle points in square-section and certain stirrup spacing;
4) reinforcement cage skeleton is respectively put into respectively bundle separated column or the split of ten shape post cylinders or ten shape wall bodies of wall within the walls, and builds normal concrete wherein and get final product.
In sum, present invention application ultra-high performance concrete retrains many pencils ten Section Column or the wall of normal concrete, compared with prior art has the advantage that
1) to after shaped section subregion, each pencil unit can be equivalent to a separated column or wall, and each pencil separated column or wall be by outsourcing and interior every ultra-high performance concrete thin plate link together, namely there is split in disjunctor, so just form a not only independent but also unified section form. Compared to traditional outsourcing confined concrete Special-Shaped Column or shear wall with short piers, ten shape posts after split or wall can effectively overcome the problem that the bearing capacity that 90 degree of inner corner trims bring weakens;
2) in each pencil cross section, many kinds of measures can be adopted to be used for improving the bearing capacity of ten shape posts or wall, its interior configuration mode is more flexible, can be reinforcement cage skeleton, type steel skeleton, steel pipe, pvc pipe etc., even at each separated column or wall only with normal concrete or high-strength concrete; According to the enhancement method of high-strength concrete, can effectively overcome the brittleness that high-strength concrete has, it is achieved good-good combine;
3) ultra-high performance concrete (UHPC) is the very-high performance Fiber Reinforced Cement Based Composites of a kind of high intensity, high-modulus, high ductility, UHPC also has at a relatively high compactness, impervious coefficient is significantly high, and moisture substantially not easily enters internal normal concrete through UHPC. If replacing normal concrete structure with UHPC, generally can adopting less thickness of slab, reducing dead load, thus reducing construction costs. Therefore replacing steel pipe with ultra-high performance concrete, the density that on the one hand ultra-high performance concrete is good is not defeated in steel, and its comprcssive strength is also much larger than the intensity of steel, therefore can saving steel reduce cost; It is avoided that the endurance quality produced because of steel corrosion reduces and fire prevention measure requires that the human and material resources required for the later maintenance such as harshness put on the other hand, it is achieved the purpose put things right once and for all;
4) in factory, the ten shape post cylinders built by ultra-high performance concrete or body of wall can be realized building industrialization as prefabricated components to produce, it is ensured that building and maintenance quality of ultra-high performance concrete, accelerating construction progress, be conducive to saving comprehensive cost;
5) ultra-high performance concrete has the tensile strength more superior than normal concrete, comprcssive strength and endurance quality, bearing capacity and the corrosion resistance of ten shape posts or wall can be significantly improved, adopt this class A of geometric unitA also to can guarantee that the performance of its mechanical property in extreme circumstances, have a good application prospect from binding function for realizing concrete.
Claims (9)
1. the constraint of pencil ultra-high performance concrete more than kind normal concrete ten shape post, including ten shape concrete profiled piles, it is characterized in that: the cylinder skeleton of described ten shape concrete profiled piles includes the skin plating being coated on outside Special-Shaped Column and the internal partition separating Special-Shaped Column cross-sectional internal space, cylinder skeleton is built molding by ultra-high performance concrete, and the skin plating of composition skeleton and internal partition connect with each other; Special-Shaped Column cross section is divided into multiple independent cell cube by described skin plating and internal partition, forms the independent separate body post of multiple pencil; Two post limb confluences of described ten shape concrete profiled piles arrange corresponding orthogonal internal partition.
2. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape post, it is characterised in that: described internal partition is perpendicular to each post limb short transverse of Special-Shaped Column and is parallel to post limb width.
3. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape post, it is characterised in that place reinforcement cage skeleton in each described cell cube, and adopt normal concrete to build closely knit by each unit body.
4. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape post, it is characterised in that: described reinforcement cage skeleton is rectangle, longitudinal reinforcement and horizontal hoop colligation form.
5. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape post, it is characterised in that: described ten shape concrete profiled piles are the center pillar in Framed Structure with Special-Shaped Columns.
6. the constraint of pencil ultra-high performance concrete more than kind normal concrete ten shape shear wall with short piers, including ten shape concrete shear wall with short piers, it is characterized in that: the wall skeleton of described ten shape concrete shear wall with short piers includes the skin plating being coated on outside shear wall with short piers and the internal partition separating shear wall with short piers cross-sectional internal space, wall skeleton is built molding by ultra-high performance concrete, and the skin plating of composition skeleton and internal partition connect with each other; Shear wall with short piers cross section is divided into multiple independent cell cube by described skin plating and internal partition, forms the independent separate body wall of multiple pencil; Two wall limb confluences of described ten shape concrete shear wall with short piers arrange corresponding orthogonal internal partition.
7. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape shear wall with short piers, it is characterised in that: described internal partition is perpendicular to each wall limb short transverse of shear wall with short piers and is parallel to wall limb width.
8. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape shear wall with short piers, it is characterised in that place reinforcement cage skeleton in each described cell cube, and adopt normal concrete to build closely knit by each unit body.
9. many pencils ultra-high performance concrete according to claim 1 constraint normal concrete ten shape shear wall with short piers, it is characterised in that: described reinforcement cage skeleton is rectangle, longitudinal reinforcement and horizontal hoop colligation form.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114753693A (en) * | 2022-03-19 | 2022-07-15 | 北京工业大学 | Assembly type cross-shaped column and ecological inner wall self-tapping nail cluster connecting structure and method |
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