CN1737279A - Manufacturing method and cylinder body of steel truss composite cylinder with built-in eccentric support - Google Patents
Manufacturing method and cylinder body of steel truss composite cylinder with built-in eccentric support Download PDFInfo
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- CN1737279A CN1737279A CN 200510098337 CN200510098337A CN1737279A CN 1737279 A CN1737279 A CN 1737279A CN 200510098337 CN200510098337 CN 200510098337 CN 200510098337 A CN200510098337 A CN 200510098337A CN 1737279 A CN1737279 A CN 1737279A
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Abstract
This invention relates to a concrete composite shear wall concealed the eccentric supporting steel truss, in addition to a method for making it. The shear wall is enclosed connected with four shearing wall plates, wherein each shearing wall has a bar-mat reinforcement including two pieces of distributed bars; the steel truss (1) comprises rolled-steel section pillar (4), rolled-steel section beam (5) and rolled-steel section supporting (10); the bearing force can meet the requirement of strong pillar, strong supporting and weak energy dissipating beam section. The bearing bar is located around the steer shotcrete and anchor fitted go beyond the pattern steel beam; the eccentric supporting steel and steer bearing bar composite the pattern steel concrete blind supporting, whose shape can be X , or the figure eight.
Description
Technical field
The present invention is a kind of built-in eccentric supporting steel truss concrete combined barrel, belongs to a kind of tubular construction.
Background technology
In highrise building, the core tube is being born the horizontal earthquake action of structural entity 80% approximately as main lateral resistant member.The good cylindrical shell of development anti-seismic performance is the core technology of highrise building seismic design.How to make in the concrete shaped steel give full play to its effect,, become the problem that Chinese scholars and engineering circle are extremely paid close attention to improve the comprehensive anti-seismic performance of tubular construction.
In the existing scheme of improving the concrete barrel anti-seismic performance, have in the shear wall of steel concrete cylindrical shell, to add the dark technology that supports of reinforcing bar.The problem of its existence is: its oblique dark supporting core partly is concrete, and tension, anti-pressure ability are still not enough.
Also has a kind of technology that steel plate supports that in the shear wall of steel concrete cylindrical shell, adds in the existing scheme of improving the concrete barrel anti-seismic performance.Its existing problems are: the steel plate stress performance than other shaped steel a little less than, tension, anti-pressure ability deficiency, supporting base end portion is prone to local buckling.
In the existing scheme of improving the concrete barrel anti-seismic performance, in the shear wall of steel concrete cylindrical shell, add the technology of center support steel truss in addition.The problem of its existence is: support is connected with the node of shaped steel beam column, makes node stressed bigger, easily causes node prior to component damage, does not meet the seismic design principle of strong node; When a plurality of supports were in same node simultaneously, the difficulty of construction of node was big, was difficult to guarantee construction quality.
Summary of the invention
Technical problem to be solved by this invention is the problem that significantly improves steel concrete cylindrical shell shock resistance, in order to address this problem, the present invention proposes a kind of in the shear wall of cylindrical shell the preparation method of built-in eccentric supporting steel truss, and according to the built-in eccentric supporting steel truss concrete combined barrel of the method design.
The preparation method of built-in eccentric supporting steel truss concrete combined barrel of the present invention, its order is as follows:
1) layout type steel column in the frame columns in four bights, cylindrical shell bottom, steel column exterior arrangement reinforcing bar, stirrup form the shear wall sleeper;
2) layout type girder steel between adjacent frame shaped steel, section steel beam and steel column are fixed, the vertical muscle of the outer configuration of section steel beam, stirrup;
3) in each sheet shear wall the configuration eccentric shaped steel secretly support, upper and lower side respectively with the frame beam in shaped steel affixed, constitute eccentric supporting steel truss jointly with steel column, section steel beam;
4) configuration reinforcement is dark outside the dark support of shaped steel supports and the support stirrup;
5) dispose affixed reinforcing bar in shear wall corner portion;
6) the vertical and horizontal distribution reinforcement of each face shear wall of configuration cylindrical shell;
7) with the frame and the wallboard arrangement of reinforcement of spatial mode eccentric supporting steel truss and quadruple shear wall, be the base section of the concrete combined barrel of built-in eccentric supporting steel truss by the disturbing concrete one-shot forming.
8) on established shell portion top, repeatedly repeat above 7 steps, form the concrete combined barrel of built-in eccentric supporting steel truss.
When the eccentric shaped steel in each sheet shear wall of configuration secretly supported, shaped steel secretly supported the upper end and stretches into section steel beam middle part or end, and the end of lower frame beam is stretched in the lower end, made dark the support with the frame bean column node of shaped steel form eccentric the connection.Eccentric support and section steel beam intersection point form energy dissipating beam section to the section between the post in antidetonation.
When in configuration, ensconcing the eccentric supporting steel truss in the cylindrical shell, the dark design bearing capacity that supports of section steel beam, steel column and shaped steel in each sheet shear wall should satisfy the requirement of strong post, strong support, weak energy dissipation beam section, to guarantee increase along with geological process, section steel beam energy dissipating beam section at first reaches is cut surrender, and all the other sections still are in does not surrender stress.
When configuration reinforcement secretly supports, four reinforcing bars secretly support the formation reinforcing bar around shaped steel and secretly support, and dark support of reinforcing bar walked around continuous section steel beam, forms new reinforcing bar and secretly support in last layer, after arriving the cylindrical shell top, the dark support of reinforcing bar is walked around the top layer section steel beam and is carried out anchoring.Outside reinforced bar support, install the distribution stirrup, behind cast shear wall concrete, form the confined concrete bundle.
The method that disposes affixed reinforcing bar is for disposing affixed muscle at the dark node place of intersecting with frame that supports.
The method according to this invention, the technical scheme of employing is: built-in eccentric supporting steel truss concrete combined barrel connects into closed by the quadruple shear wall.Connect by shared frame columns between the adjacent two sides shear wall.Every shear wall constitutes by frame and shear wall slab, the steel mesh reinforcement that configuration is made up of horizontal and vertical distribution reinforcement in shear wall slab, between steel mesh reinforcement, socket, it is characterized in that: hide plane eccentric supporting steel truss 1 in the every shear wall with socketing reinforcing bar 13.Eccentric supporting steel truss 1 is made up of the dark support 10 of steel column 4, section steel beam 5 and shaped steel.In each sheet shear wall, steel column 4 is hidden in the frame at shear wall two ends, section steel beam 5 is hidden in the frame beam of shear wall, shaped steel is dark to be supported 10 and is connected with section steel beam 5 in the frame of upper and lower side, and shaped steel is dark support 10 around be distributed with that reinforcing bar is dark to support 17, reinforcing bar secretly supports 17 and walks around that section steel beam 5 carries out anchoring in the frame.The design bearing capacity of the dark support 10 of steel column 4, section steel beam 5 and shaped steel should satisfy the requirement of strong post, strong support, weak energy dissipation beam section, and along with the increase of geological process, energy dissipating beam section at first reaches and cut surrender in the section steel beam, and all the other sections still are in does not surrender stress.Connect by shared steel column 4 between the plane steel truss in the adjacent two sides shear wall.Ensconce the eccentric supporting and space type eccentric supporting steel truss of the strong post in the reinforced concrete tube body, strong support, weak energy dissipation beam section in forming.
The length of energy dissipating beam section should be not excessive, forms shear yielding type energy dissipating beam section to guarantee energy dissipating beam section; The length of energy dissipating beam section should be not too small yet, and the plastic strain angle is excessive to cause too early plastic strain to avoid.The length a of energy dissipating beam section satisfies following relation:
h
b≤a≤1.5h
b
In the formula: the length of a-energy dissipating beam section, i.e. dark support of shaped steel and section steel beam intersection point are to shaped steel
The distance of cylinder;
h
bThe depth of section of-shaped steel energy dissipating beam section
Described built-in eccentric steel truss concrete combined barrel, dark support 10 of shaped steel in the eccentric supporting steel truss 1 and the dark support 17 of reinforcing bar are herringbone, its upper end is stretched in the upper side frame beam and is connected with section steel beam 5 mid points in the beam, the end of lower frame beam 5 is stretched in the lower end, be connected with section steel beam 5 in the lower frame beam, shaped steel is dark to support 10 and reinforcing bar secretly supports 17, section steel beam 5 and steel column 4 combinations, at the inner eccentric supporting and space steel truss that forms strong post, strong support, weak energy dissipation beam section of concrete barrel.
Described built-in eccentric supporting steel truss concrete combined barrel, dark support 10 of shaped steel in the eccentric supporting steel truss 1 and the dark support 17 of reinforcing bar are X-shaped, its upper end is stretched in the end of upper side frame beam, be connected with section steel beam 5 in the upper side frame beam, the end that the lower frame beam is stretched in the lower end is connected with section steel beam 5 in the lower frame beam, shaped steel is dark to support 10 and reinforcing bar secretly supports 17, steel column 4 and section steel beam 5 combinations, at the inner spatial mode eccentric supporting steel truss that forms strong post, strong support, weak energy dissipation beam section of steel concrete cylindrical shell.
Described built-in eccentric supporting steel truss concrete combined barrel, dark support 10 of shaped steel in the eccentric supporting steel truss 1 and the dark support 17 of reinforcing bar are splayed, its upper end is connected with section steel beam 5 in the beam, the end of lower frame beam is stretched in the lower end, be connected with section steel beam 5 in the lower frame beam, shaped steel is dark to support 10 and reinforcing bar secretly supports 17, the section steel beam 5 in the frame beam and steel column 4 combinations at shear wall two ends, at the inner spatial mode eccentric supporting steel truss that forms strong post, strong support, weak energy dissipation beam section of steel concrete cylindrical shell.
Described built-in eccentric supporting steel truss concrete combined barrel, it is characterized in that: dark support 10 of the shaped steel in the eccentric supporting steel truss 1 and the dark support 17 of reinforcing bar are the monocline bar, its upper end is connected with section steel beam 5 in the beam, the end of lower frame beam is stretched in the lower end, be connected with section steel beam 5 in the lower frame beam that shaped steel is dark to support 10 and reinforcing bar secretly supports 17, the section steel beam 5 in the frame beam and steel column 4 combinations at shear wall two ends, at the inner spatial mode eccentric supporting steel truss that forms strong post, strong support, weak energy dissipation beam section of reinforced concrete shear wall.
Cylindrical shell belongs to the space-load structure member, has than big-difference with the loading characteristic of plane primary structure member shear wall.In seismic design, cylindrical shell not only will bear pressure, shearing, moment of flexure, also will bear moment of torsion.Interior eccentric supporting steel truss of ensconcing in the cylindrical shell can bear pressure, shearing, moment of flexure with steel concrete, the more important thing is that the eccentric supporting steel truss in the interior plant cylindrical shell has been formed Steel Space Truss, can improve the ability of being turned round of steel concrete greatly.The composite eccentric of the steel column in the cylindrical shell, section steel beam, reinforcing bar-shaped steel supports and all can directly bear the part moment of torsion on the one hand, and wherein composite eccentric supports and becomes certain included angle with the member axis, and more near the principal tensile stress direction, its antitorque effect is more obvious; Eccentric supporting steel truss can effectively be limited in torsional interaction lower edge cylindrical shell periphery and form parallel spirality diagonal crack on the other hand, has limited the width of diagonal crack; Composite eccentric supports the very strong dowel action that concrete is played, and makes concrete area increase between the crack, improves concrete and participates in antitorque ability.
Built-in eccentric supporting steel truss combined barrel of the present invention is applicable to the tubular construction of concrete panel as the first line of defence of antidetonation, and after wallboard destroyed in antidetonation, the spatial mode eccentric supporting steel truss still kept the resistance to overturning of structure.When seismic forces continued to increase, at the eccentric segment that off-centre supports, promptly surrender and plastic strain appearred in energy dissipating beam section, to consume the seismic energy of input structure.
Built-in eccentric supporting steel truss structure of the present invention is the space truss system of a strong post, strong support, weak energy dissipation beam section, the design bearing capacity of dark support, steel column is higher than energy dissipating beam section and reaches pairing bearing capacity when surrendering, when surrender and plastic strain appearred in energy dissipating beam section, all the other sections of section steel beam, dark support, steel column still were in the stage of surrender.
In the built-in eccentric supporting steel truss of the present invention, dark support by shaped steel secretly support, reinforcing bar secretly supports, support stirrup, confined concrete is formed jointly, improved the bearing capacity of structure, truss still has metastable hysteresis performance when guaranteeing energy dissipating beam section appearance surrender and plastic strain simultaneously, has improved the ductility of structure.
The present invention has reduced the degree that sliding rupture takes place shaped steel in concrete.Because shaped steel truss self forms the force transfer system that geometry is constant, in concrete and the cooperative process of shaped steel, shaped steel and concrete adhesion stress do not play the effect of main transmission power, are difficult for taking place bond damage; In addition, in the dark support that dark support of shaped steel and reinforced bar support form jointly, reinforced bar support is walked around section steel beam and is carried out anchoring, has strengthened dark support of shaped steel and concrete cementation greatly.
Dark support of the present invention all is connected with section steel beam, has avoided the too complicated shortcoming of built-in center support steel truss cylindrical shell node construction, has saved the duration, has reduced cost, has guaranteed construction quality.
The present invention is combined to form by built-in spatial mode eccentric supporting steel truss and concrete barrel, and forming process is the process of both additions, but the shock resistance of combination back structure is significantly higher than the addition that steel truss and cylindrical shell work alone.Reason is that combining structure punishment brought into play both advantages separately, has remedied both deficiencies in antidetonation effectively.For concrete barrel, built-in eccentric supporting steel truss has improved its bearing capacity significantly under the condition that does not change its appearance and size, increased its rigidity, has improved its ductility, has increased the building usable floor area, has saved building costs.For the eccentric supporting steel truss of hiding in shear wall, the shaped steel rod member is subjected to the constraint of steel concrete bundle, is difficult for unstable failure takes place, and bearing capacity and ductility all are improved.In addition, common eccentric supporting steel truss after the energy dissipating beam section generation plastic strain, easily causes floor to destroy in antidetonation, is difficult to after the middle shake repair, and the first road anti-vibration defense lines of the present invention is a shear wall, and energy dissipating beam section is surrendered in big earthquake centre as the combining structure second road anti-vibration defense lines.Compare with combining structures such as the dark support tube body structure of band steel plate, the dark support type steel cylinder of band steel concrete structure, the dark truss concrete combined barrels of built-in center support, supporting capacity of the present invention improves, bearing capacity and stiffness degradation are slow, the later stage anti-seismic performance is relatively stable, and the bottom shear sliding rupture alleviates.
Because tubular construction is the core lateral resisting parts of building structure, has improved the shock resistance of shaped steel shear wall, has also just improved the whole shock resistance of shaped steel shear wall structure, when building meets with violent earthquake, can alleviate its earthquake, prevent that it from collapsing.
Description of drawings
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and the dark support of reinforcing bar when being herringbone Fig. 1, the dark schematic diagram that supports, wherein A1-B1-C1-D1-A2-B2-C2-D2, A2-B2-C2-D2-A3-B3-C3-D3, A3-B3-C3-D3-A4-B4-C4-D4, A4-B4-C4-D4-A5-B5-C5-D5 represent an element of construction of cylindrical shell respectively.E1-F1-G2, E2-F2-G3, E3-F3-G4 are that the herringbone in a slice shear wall secretly supports;
Fig. 2 is that dark support of the shaped steel of built-in eccentric supporting steel truss concrete combined barrel of the present invention and reinforcing bar secretly support when being herringbone, a slice shear wall structure arrangement of reinforcement schematic diagram in the element of construction, and the arrangement of reinforcement schematic diagram of other three sides is identical with this figure;
Fig. 3 is an A-A section enlarged diagram among Fig. 2;
Fig. 4 is a B B section enlarged diagram among Fig. 2;
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and the dark support of reinforcing bar when being X-shaped Fig. 5, the arrangement of reinforcement schematic diagram of a slice shear wall in element of construction;
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and the dark support of reinforcing bar when being splayed Fig. 6, the structural reinforcement schematic diagram of a slice shear wall in element of construction;
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and reinforcing bar when secretly being supported for the monocline bar Fig. 7, the structural reinforcement schematic diagram of a slice shear wall in element of construction;
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and the dark support of reinforcing bar when being the netted layout of herringbone Fig. 8, the structural reinforcement schematic diagram of a slice shear wall in element of construction;
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and the dark support of reinforcing bar when being the netted layout of X-shaped Fig. 9, the structural reinforcement schematic diagram of a slice shear wall in element of construction;
To be that shaped steel is dark in the built-in eccentric supporting steel truss concrete combined barrel of the present invention support and the dark support of reinforcing bar when being the netted layout of splayed Figure 10, the structural reinforcement schematic diagram of a slice shear wall in element of construction;
Wherein, among the figure:
The 1-eccentric supporting steel truss, 2-frame columns reinforcing bar, 3-frame columns stirrup, the 4-steel column, 5-section steel beam, 6-frame beam steel, 7-frame beam stirrup, 8-shear wall wallboard transverse reinforcement, 9-shear wall wallboard vertical reinforcement, 10-shaped steel secretly supports, the 11-first affixed muscle, the 12-second affixed muscle, the 13-connecting lacing wire, 14-the 3rd affixed muscle, 15-the 4th affixed muscle, the 17-reinforcing bar secretly supports, and 18-secretly supports stirrup.
The specific embodiment
Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.
Embodiment 1:
Preparation method is as follows:
1) layout type steel column in the frame columns in four bights, cylindrical shell bottom, steel column exterior arrangement reinforcing bar, stirrup form the shear wall sleeper;
2) layout type girder steel between adjacent frame shaped steel, section steel beam and steel column are fixed, the vertical muscle of the outer configuration of section steel beam, stirrup;
3) the eccentric shaped steel of configuration secretly supports in each sheet shear wall, and the mid point of upper end and upper side frame beam is affixed, and the shaped steel end in the lower frame beam of lower end is affixed, forms herringbone and secretly supports, and constitutes eccentric supporting steel truss jointly with steel column, section steel beam;
4) configuration reinforcement is dark outside the dark support of shaped steel supports and the support stirrup;
5) dispose affixed reinforcing bar in shear wall corner portion;
6) the vertical and horizontal distribution reinforcement of configuration shear wall;
7) with the frame and the wallboard arrangement of reinforcement of built-in eccentric supporting steel truss and quadruple shear wall, be the base section of the concrete combined barrel of built-in eccentric supporting steel truss by the disturbing concrete one-shot forming.
8) on established shell portion top, repeatedly repeat above 7 steps, form the concrete combined barrel of built-in eccentric supporting steel truss.
The structural reinforcement schematic diagram of built-in herringbone eccentric supporting steel truss concrete combined barrel is worn dark 17 the concrete shear force wall plate of supporting of herringbone reinforcing bar and is constituted by dark 10 the spatial mode eccentric supporting steel truss 1 and 4 of supporting of band herringbone shaped steel as shown in Figure 1, Figure 2, Figure 3 and Figure 4.The shared frame columns of adjacent two sides shear wall.Shaped steel in the frame columns is hidden I-shaped steel column 4, and arrangement of reinforcement is that every limit has two reinforcing bars 2, quadrangle stirrup 3 along the vertical muscle distribution of post ground colligation, and its stirrup distributes and connects the intranodal zone that joins to Liang Yuzhu; The section steel beam of its square-section frame beam is an i shaped steel 5, and arrangement of reinforcement is that every limit has equidistant two vertical muscle 6, rectangle hoop 7 along the vertical muscle distribution of beam ground colligation, and the stirrup of frame beam is distributed to beam-ends; The arrangement of reinforcement of quadruple shear wall is, vertically arrange shear wall slab transverse reinforcement 8 and vertical reinforcement 9 in both sides respectively equably along laterally reaching, and in the crosspoint colligation is fixed, form two steel mesh reinforcements, insert respectively in frame columns and the frame beam at the two ends of transverse reinforcement 8 and vertical reinforcement 9, and make it satisfy the requirement of anchorage length respectively.Four reinforcing bars support 10 round shaped steel and form the dark support 17 of reinforcing bar, and reinforcing bar secretly supports the 17 section steel beam anchorings of walking around in the frame beam, and reinforcing bar secretly supports the 17 outer stirrups 18 that installing uniformly.The dark support of shaped steel 10 upper ends are stretched into the upper side frame beam and are connected with shaped steel 5 in the beam, and the end of lower frame beam is stretched in its lower end, is connected with section steel beam 5 in the lower frame beam, forms eccentric supporting steel truss 1.Four reinforcing bars are walked around section steel beam 5 and are carried out anchoring, or the reinforcing bar of formation adjacent structure unit secretly supports.Other constructional reinforcement has, dark support the node place of intersecting with the frame beam affixed respectively the first affixed muscle 11 and the second affixed muscle 12.The connecting lacing wire 13 that is less than or equal to 600mm with spacing between two steel mesh reinforcements of every shear wall links to each other.With the frame and the wallboard arrangement of reinforcement of eccentric supporting steel truss and quadruple shear wall, be the concrete combined barrel of built-in eccentric supporting steel truss at last by the disturbing concrete one-shot forming.
Embodiment 2
Second kind of form of structure of built-in eccentric supporting steel truss concrete combined barrel as shown in Figure 5, the shaped steel of eccentric supporting steel truss is dark support 10 and reinforcing bar dark to support 17 be X-shaped, stretch into the end of upper side frame beam on it, be connected with section steel beam 5 in the upper side frame beam.The lower end is stretched in the end of lower frame beam, is connected with section steel beam 5 in the lower frame beam.Dark support the node place of intersecting with the frame beam affixed respectively the 3rd affixed muscle 14 and the 4th affixed muscle 15, others are identical with first kind of form.
The third form of structure of built-in eccentric supporting steel truss concrete combined barrel as shown in Figure 6, in the quadruple shear wall, two steel mesh reinforcement inboards of wallboard are provided with dark support 10 of splayed shaped steel and the dark support 17 of reinforcing bar, its upper end is stretched into the upper side frame beam and is connected with section steel beam 5 in the beam, the end of lower frame beam is stretched in its lower end, is connected with section steel beam 5 in the lower frame beam.Dark support the node place of intersecting with the frame beam affixed respectively the 5th affixed muscle 11 and the 6th affixed muscle 16, others are identical with first kind of form.
Embodiment 4
The 4th kind of form of structure of built-in eccentric supporting steel truss concrete combined barrel as shown in Figure 7, dark support 10 of shaped steel in the eccentric supporting steel truss 1 and the dark support 17 of reinforcing bar are the monocline bar, its upper end is connected with section steel beam 5 ends in the beam, the end of lower frame beam is stretched in the lower end, be connected with section steel beam 5 in the lower frame beam, dark support the node place of intersecting with the frame beam affixed respectively the 3rd affixed muscle 14 and the 4th affixed muscle 15, others are identical with first kind of form.
In addition, dark support of shaped steel of the present invention and the dark support of reinforcing bar also can be herringbone, X, the netted layout of splayed, respectively referring to Fig. 8, Fig. 9 and Figure 10.
Claims (8)
1, a kind of preparation method of built-in eccentric supporting steel truss concrete combined barrel is a kind of preparation method of cylindrical shell, it is characterized in that: the order of making is as follows:
1) layout type steel column in the frame columns in four bights, cylindrical shell bottom, steel column exterior arrangement reinforcing bar, stirrup form the shear wall sleeper;
2) layout type girder steel between adjacent frame shaped steel, section steel beam and steel column are fixed, the vertical muscle of the outer configuration of section steel beam, stirrup;
3) in each sheet shear wall the configuration eccentric shaped steel secretly support, upper and lower side respectively with the frame beam in shaped steel affixed, constitute eccentric supporting steel truss jointly with steel column, section steel beam;
4) configuration reinforcement is dark outside the dark support of shaped steel supports and the support stirrup;
5) dispose affixed reinforcing bar in shear wall corner portion;
6) the vertical and horizontal distribution reinforcement of configuration shear wall;
7) with the frame and the wallboard arrangement of reinforcement of spatial mode eccentric supporting steel truss and quadruple shear wall, be the base section of the concrete combined barrel of built-in eccentric supporting steel truss by the disturbing concrete one-shot forming;
8) on established shell portion top, repeatedly repeat above 7 steps, form the concrete combined barrel of built-in eccentric supporting steel truss;
Wherein, when the eccentric shaped steel in each sheet shear wall of configuration secretly supports, stretch into section steel beam middle part or end in the upper side frame beam on shaped steel secretly supports, the end of lower frame beam is stretched in the lower end, makes dark the support with the frame bean column node of shaped steel form eccentric the connection; Eccentric support and section steel beam intersection point form energy dissipating beam section to the section between the post in antidetonation;
In each sheet shear wall, the dark design bearing capacity that supports of section steel beam, steel column and shaped steel that constitutes eccentric supporting steel truss satisfies the requirement of strong post, strong support, weak energy dissipation beam section;
The method that disposes affixed reinforcing bar is for disposing affixed muscle at the dark node place of intersecting with frame that supports.
2, the preparation method of a kind of combined concrete shear wall with built-in eccentric supporting steel truss according to claim 1, it is characterized in that: when configuration reinforcement secretly supports, four reinforcing bars secretly support the formation reinforcing bar around shaped steel and secretly support, the section steel beam anchoring in the frame beam is walked around in the dark support of reinforcing bar, and outside reinforced bar support, install the distribution stirrup, behind cast shear wall concrete, form the confined concrete bundle.
3, the built-in eccentric supporting steel truss concrete combined barrel of method design according to claim 1, connect into closed by the quadruple shear wall, connect by shared frame columns between the adjacent two sides shear wall, every shear wall constitutes by frame and shear wall slab, the steel mesh reinforcement that configuration is made up of horizontal and vertical distribution reinforcement in shear wall slab, between steel mesh reinforcement, socket, it is characterized in that: hide eccentric supporting steel truss (1) in the every shear wall with socketing reinforcing bar (13); Eccentric supporting steel truss (1) secretly supports (10) by steel column (4), section steel beam (5) and shaped steel and forms; In each sheet shear wall, steel column (4) is hidden in the frame at shear wall two ends, section steel beam (5) is hidden in the frame beam of shear wall, shaped steel supports secretly that section steel beam (5) is connected in the frame of (10) and upper and lower side, and shaped steel secretly support (10) around be distributed with reinforcing bar and secretly support (17), reinforcing bar secretly supports (17) and walks around section steel beam in the frame (5) and carry out anchoring; The design bearing capacity that steel column (4), section steel beam (5) and shaped steel secretly support (10) satisfies strong post, the requirement of support, weak energy dissipation beam section by force; Connect by shared steel column (4) between the plane eccentric supporting steel truss in the adjacent two sides shear wall; In the inner formation of concrete shear force wall, ensconce the spatial mode eccentric supporting steel truss of the strong post in the cylindrical shell, strong support, weak energy dissipation beam section.
4, built-in eccentric supporting steel truss concrete combined barrel according to claim 3 is characterized in that: the length of energy dissipating beam section satisfies following relation:
h
b≤a≤1.5h
b
The length of a-energy dissipating beam section in the formula, promptly shaped steel supports and the distance of section steel beam intersection point to the shaped steel cylinder;
h
bThe depth of section of-shaped steel energy dissipating beam section.
5, built-in eccentric supporting steel truss concrete combined barrel according to claim 3, it is characterized in that: the shaped steel in the eccentric supporting steel truss (1) secretly supports (10) and reinforcing bar secretly supports (17) and is herringbone, its upper end is stretched in the upper side frame beam and is connected with section steel beam (5) mid point in the beam, the end of lower frame beam (5) is stretched in the lower end, be connected with section steel beam (5) in the lower frame beam, shaped steel secretly supports (10) and reinforcing bar secretly supports (17), steel column (4) combination at section steel beam (5) and shear wall two ends is at the strong post of the inner formation of steel concrete cylindrical shell, strong support, the spatial mode eccentric supporting steel truss of weak energy dissipation beam section.
6, built-in eccentric supporting steel truss concrete combined barrel according to claim 3, it is characterized in that: the shaped steel in the eccentric supporting steel truss (1) secretly supports (10) and reinforcing bar secretly supports (17) and is X-shaped, its upper end is stretched in the end of upper side frame beam, be connected with section steel beam (5) in the upper side frame beam, the end that the lower frame beam is stretched in the lower end is connected with section steel beam (5) in the lower frame beam, shaped steel secretly supports (10) and reinforcing bar secretly supports (17), section steel beam (5) combination in steel column at shear wall two ends (4) and the frame beam is at the strong post of the inner formation of steel concrete cylindrical shell, strong support, the spatial mode eccentric supporting steel truss of weak energy dissipation beam section.
7, built-in eccentric supporting steel truss concrete combined barrel according to claim 3, it is characterized in that: the shaped steel in the steel truss (1) secretly supports (10) and reinforcing bar secretly supports (17) and is splayed, its upper end is stretched in the upper side frame beam, be connected with section steel beam (5) in the upper side frame beam, the end of lower frame beam is stretched in the lower end, be connected with section steel beam (5) in the lower frame beam, shaped steel secretly supports (10) and reinforcing bar secretly supports (17), steel column (4) combination at section steel beam in the frame beam (5) and shear wall two ends is at the strong post of the inner formation of steel concrete cylindrical shell, strong support, the spatial mode eccentric supporting steel truss of weak energy dissipation beam section.
8, built-in eccentric supporting steel truss concrete combined barrel according to claim 3, it is characterized in that: the shaped steel in the eccentric supporting steel truss (1) secretly supports (10) and reinforcing bar secretly to support (17) be the monocline bar, its upper end is stretched in the upper side frame beam, be connected with section steel beam in the beam (5), the end of lower frame beam is stretched in the lower end, be connected with section steel beam (5) in the lower frame beam, shaped steel secretly supports (10) and reinforcing bar secretly supports (17), steel column (4) combination at section steel beam in the frame beam (5) and shear wall two ends is at the strong post of the inner formation of steel concrete cylindrical shell, strong support, the spatial mode eccentric supporting steel truss of weak energy dissipation beam section.
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| CNB2005100983371A CN100432345C (en) | 2005-09-09 | 2005-09-09 | Method for making built-in eccentric supporting steel truss concrete combined barrel and the barrel |
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| CNB2005100983371A CN100432345C (en) | 2005-09-09 | 2005-09-09 | Method for making built-in eccentric supporting steel truss concrete combined barrel and the barrel |
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| CN100432345C CN100432345C (en) | 2008-11-12 |
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| CN1995571B (en) * | 2006-12-29 | 2010-06-02 | 北京工业大学 | Built-in steel truss concrete composite giant beam-column frame and its manufacturing method |
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| CN2818607Y (en) * | 2005-09-09 | 2006-09-20 | 北京工业大学 | Built-in assembled bearing eccentric cylinder of concrete truss |
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| CN108222347A (en) * | 2018-03-03 | 2018-06-29 | 北京工业大学 | A kind of big module welding overlapping beam slab of the assembled with plane girder temporary support |
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