CN106049670A - Embedded type steel truss system - Google Patents

Embedded type steel truss system Download PDF

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Publication number
CN106049670A
CN106049670A CN201610394483.7A CN201610394483A CN106049670A CN 106049670 A CN106049670 A CN 106049670A CN 201610394483 A CN201610394483 A CN 201610394483A CN 106049670 A CN106049670 A CN 106049670A
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CN
China
Prior art keywords
steel
boom
web
girder
chord
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Application number
CN201610394483.7A
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Chinese (zh)
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CN106049670B (en
Inventor
张贺
曹平周
伍凯
南洋
桑胜涛
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河海大学
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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal

Abstract

The invention discloses an embedded type steel truss system which comprises an embedded type steel truss and an embedded type steel beam. The embedded type steel truss comprises an upper chord, a lower chord, straight web members and inclined web members, wherein the upper chord and the lower chord are arranged in parallel, the straight web members are perpendicularly fixed between the upper chord and the lower chord, and the two ends of each inclined web member are fixed to the joint of the upper chord and the corresponding straight web member and the joint of the lower chord and the corresponding straight web member correspondingly; the embedded type steel beam comprises an I-beam and reinforcing ribs welded to an I-beam web plate; and welding studs are welded to a lower flange of the upper chord, and shear force parts are welded to a web plate of the upper chord. The steel truss and the steel beam are embedded into a transfer slab, so that on the one hand, the clear height of a storey occupied by a bent system can be reduced, and on the other hand, the purpose of saving materials can be realized by means of the compression property of a concrete slab.

Description

Flush type steel girder system
Technical field
The present invention relates to fixed buildings, especially a kind of combinative structure truss.
Background technology
In large public building, along with floor changes, post net can change, and a certain layer at floor starts post component Can increase than lower floor, this layer is referred to as conversion layer.For the beam column on support upper strata, the floorboard of conversion layer the most just has slab, thick Degree is general at more than 1000mm, can reach individually 3000mm.As used conventional beam slab system at conversion layer, due to floow load Very big, the depth of section of beam can be quite big, affects the floor clear height of conversion layer, and materials'use is too much, unreasonable structure.
Summary of the invention
It is an object of the invention to, it is provided that a kind of flush type steel girder system, to solve above-mentioned the asking of prior art existence Topic.
The core content of the present invention is, a kind of flush type steel girder system, including embedded type truss and embedded type girder steel, institute State embedded type truss include top boom arranged in parallel and lower boom, be perpendicularly fixed between top boom and lower boom straight Web member, and two ends are individually fixed in the diagonal web member of top boom or lower boom and vertical web rod junction;Described embedded type girder steel bag Include I-beam and the ribbed stiffener being welded on I-beam web;On the lower flange of top boom, welding weldering nail, web is welded with and cuts Power part.
Preferably, described lower boom for concrete filled rectangular steel tube members, hogging moment area is filled with concrete.Described vertical web rod interior Portion is filled with concrete.The end of described vertical web rod and diagonal web member is welded with steel plate.The bottom welding of described top boom has at the bottom of steel Seat, steel base be provided with vertically downward with tilt steel bushing, described vertical web rod and diagonal web member are consolidated on steel bushing.
Preferably, the top flange of described top boom is embedded in the concrete of floorboard, in terms of parts by weight, floorboard and under Concrete in chord member and vertical web rod includes following component: cement 380-420, medium sand 500-700, glass fibre 15-25, water 180-200, coarse aggregate 800-1000, flyash 20-40, diminishing synergist 3-5.
Preferably, the structural formula of described diminishing synergist is:
In formula, a:b:c=1:1.2:1, n are 45~50, and m is 45~50, and d is 50~80.
Operation principle and the advantage of the present invention be: uses steel truss and girder steel system to replace traditional beam slab body at conversion layer System, can make structure stress more reasonable, and material is more saved.Steel truss and girder steel are imbedded in change-over panel, on the one hand can save Taken floor clear height by curved system, on the other hand utilize the Compressive Performance of concrete slab to reach to save the purpose of material.
Accompanying drawing explanation
Fig. 1 is the site plan of the present invention.
Fig. 2 is the structural representation of truss.
Fig. 3 is the sectional view of top boom.
Fig. 4 is the sectional view of girder steel.
Fig. 5 is the structural representation of steel node.
Detailed description of the invention
As it is shown in figure 1, described flush type steel girder system is mainly by two parts such as embedded type truss 1 and embedded type girder steels 2 Composition.As shown in Figures 2 and 3, embedded type truss is made up of top boom 11, lower boom 12, vertical web rod 13 and diagonal web member 14.
Top boom is fully embedded in the high-strength concrete 11h of conversion layer roof boarding, and top boom is by top flange 11e, bottom wing Edge 11c, steel web 11d, weldering nail 11a and shear key 11f are constituted.By weldering nail melting welding in steel sole plate 11g, steel sole plate on lower flange Base plate when pouring as conversion layer floorboard, weldering nail makes lower flange closely be engaged with conversion layer floorboard, does not bonds Sliding.Shear key is connected by angle welding with top flange and steel web, and effect is to prevent top flange and steel web and conversion layer Floorboard generation bond-slip.Hole is had so that deformed bar 11b can pass bottom steel web.
Lower boom is concrete filled rectangular steel tube members, at hogging moment area fill concrete, prevents steel pipe compressive buckling, improves chord member Bearing capacity.Diagonal web member and vertical web rod are round steel pipe structure, and the internal fill concrete of vertical web rod is to improve anti-pressure ability.Straight abdomen Bar, diagonal web member end are cased with screw thread, and two ends are welded with steel plate to prevent concrete water loss in welding from making concrete deterioration.
Embedded type girder steel 2 is that I-shaped cross-section, top flange and web are wholly embedded in the concrete 24 of conversion layer floorboard, Lower flange is exposed, and is positioned at the lower section of base plate 21.Ribbed stiffener 23 it is welded with in order to improve the anti-of girder steel and concrete slab on steel beam web plate Slip property.Web is at the position welded reinforcement sleeve 22 passed by reinforcing bar 25, it is to avoid bending reinforcing steel bar, ensures reinforcing steel bar bear simultaneously Seriality.
Diagonal web member and vertical web rod pass through steel node weld on top boom and lower boom.Steel node is by steel base 3 and steel bushing Cylinder 4 composition.Steel base is solid disk, is welded on the edge of a wing of upper and lower chord member.Steel bushing is welded on steel base, interior mantle fiber There is a screw thread, and mouth edge 20mm scope non-threaded.After vertical web rod and diagonal web member are screwed in non-threaded region by angle welding even Connect.
The implementation process of the present invention is as follows: assembled flush type steel truss in factory.Flush type steel truss is lifted into finger Location is put, and is just connect with supporting construction by truss.Hinged mode is used to connect embedded type girder steel and flush type steel truss.In embedment Steel sole plate is laid between formula girder steel lower flange and flush type steel pricncipal rafter.Steel sole plate and flush type steel lower flange of girder edge pass through fillet welding Seam connects, and is connected by weldering nail melting welding with flush type steel truss top flange.Using steel sole plate as template casting concrete conversion layer Floorboard, and reasonable maintenance.
In use, load is transferred to embedded type girder steel by floorboard, makes embedded type girder steel by curved.Girder steel lower flange is subject to Draw, top flange and the common tension of concrete of its near zone.Girder steel end by Shear transfer to embedded type truss.Sagging moment district Pricncipal rafter and the internal common pressurized of concrete, and circumferential concrete prevents steel construction drum song, lower boom as constraint Steel pipe tension;The upper and lower edge of a wing of hogging moment area pricncipal rafter and web pressurized, enable the compression capability of top boom to send out completely Waving, lower boom steel pipe and the common pressurized of inner concrete, steel pipe inner concrete prevents Qi Guqu as steel tube confinement.
In further implementing, the composition of concrete is optimized.In terms of parts by weight, concrete includes following group Point: cement 380-420, medium sand 500-700, glass fibre 15-25, water 180-200, coarse aggregate 800-1000, flyash 20- 40, diminishing synergist 3-5.
Wherein, the structural formula of described diminishing synergist is:
In formula, a:b:c=1:1.2:1, n are 45~50, and m is 45~50, and d is 50~80.
Experiment 1-8
Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8
Cement 400 380 420 390 410 425 375 395
Medium sand 580 620 560 660 500 700 540 710
Glass fibre 20 18 22 25 15 13 28 24
Water 195 190 200 180 185 205 175 180
Coarse aggregate 920 880 960 840 1000 800 780 1020
Flyash 30 22 24 26 32 38 40 20
Diminishing synergist 4.2 4.6 3.6 3.2 2.8 4.4 4.8 5.0
3d intensity 150 160 140 145 150 170 160 140
28d intensity 165 165 155 160 175 180 160 165
Freeze thawing 200 times Qualified Qualified Qualified Qualified Qualified Qualified Qualified Qualified
Durability Pass through Pass through Pass through Pass through Pass through Pass through Pass through Pass through
Note: matched group be use ordinary water-reducing agent concrete, its 3d intensity be 130Mpa, 28d intensity be 135Mpa.
In a word, using steel truss and girder steel system to replace traditional beam slab system at conversion layer, during meeting, structure stress is more Rationally, material is more saved.Further, steel truss and girder steel are imbedded in change-over panel, on the one hand can save and be taken building by curved system Layer clear height, on the other hand utilizes the Compressive Performance of concrete slab to reach to save the purpose of material.

Claims (7)

1. a flush type steel girder system, it is characterised in that include embedded type truss and embedded type girder steel, described embedded type purlin The vertical web rod that frame includes top boom arranged in parallel and lower boom, is perpendicularly fixed between top boom and lower boom, and Two ends are individually fixed in the diagonal web member of top boom or lower boom and vertical web rod junction;Described embedded type girder steel include I-beam and The ribbed stiffener being welded on I-beam web;On the lower flange of top boom, welding weldering nail, web is welded with shear key.
2. flush type steel girder system as claimed in claim 1, it is characterised in that tying for rectangular steel pipe of described lower boom Structure, hogging moment area is filled with concrete.
3. flush type steel girder system as claimed in claim 1, it is characterised in that the inside of described vertical web rod is filled with coagulation Soil.
4. flush type steel girder system as claimed in claim 1, it is characterised in that the end weldering of described vertical web rod and diagonal web member It is connected to steel plate.
5. the flush type steel girder system as described in any one of Claims 1-4, it is characterised in that the bottom of described top boom Be welded with steel base, steel base be provided with vertically downward with tilt steel bushing, described vertical web rod and diagonal web member are consolidated in steel bushing On cylinder.
6. flush type steel girder system as claimed in claim 5, it is characterised in that the top flange of described top boom is embedded in flooring In the concrete of plate, in terms of parts by weight, the concrete in floorboard and lower boom and vertical web rod includes following component: cement 380-420, medium sand 500-700, glass fibre 15-25, water 180-200, coarse aggregate 800-1000, flyash 20-40, diminishing increases Effect agent 3-5.
Flush type steel girder system the most according to claim 6, it is characterised in that the structural formula of described diminishing synergist For:
In formula, a:b:c=1:1.2:1, n are 45~50, and m is 45~50, and d is 50~80.
CN201610394483.7A 2016-06-03 2016-06-03 Flush type steel girder system Active CN106049670B (en)

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CN106049670B CN106049670B (en) 2018-07-24

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6779314B1 (en) * 1999-06-14 2004-08-24 Zhi Fan Structure formed of foaming cement and lightweight steel, and a structure system and method of forming the structure system
CN101392600A (en) * 2007-09-20 2009-03-25 贵阳铝镁设计研究院 Trussed-beam steel beam reinforcing structure
CN201507031U (en) * 2009-09-11 2010-06-16 大连悦泰建设工程有限公司 Structural system of steel truss structural transition layer
CN204252270U (en) * 2014-10-28 2015-04-08 同济大学 Combined type energy-dissipating and shock-absorbing semi-girder rise of a truss Rotating fields system
CN204753813U (en) * 2015-06-30 2015-11-11 中冶建工集团有限公司 Steel construction conversion truss
CN105133786A (en) * 2015-08-24 2015-12-09 河海大学 Hollow type combination beam for quick construction and construction method
CN204899033U (en) * 2015-08-30 2015-12-23 郭勇 Shaped steel concrete combination flat beam
CN105239497A (en) * 2015-04-14 2016-01-13 北京地圣科创建设工程有限公司 Pre-stressed concrete combination truss beam

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6779314B1 (en) * 1999-06-14 2004-08-24 Zhi Fan Structure formed of foaming cement and lightweight steel, and a structure system and method of forming the structure system
CN101392600A (en) * 2007-09-20 2009-03-25 贵阳铝镁设计研究院 Trussed-beam steel beam reinforcing structure
CN201507031U (en) * 2009-09-11 2010-06-16 大连悦泰建设工程有限公司 Structural system of steel truss structural transition layer
CN204252270U (en) * 2014-10-28 2015-04-08 同济大学 Combined type energy-dissipating and shock-absorbing semi-girder rise of a truss Rotating fields system
CN105239497A (en) * 2015-04-14 2016-01-13 北京地圣科创建设工程有限公司 Pre-stressed concrete combination truss beam
CN204753813U (en) * 2015-06-30 2015-11-11 中冶建工集团有限公司 Steel construction conversion truss
CN105133786A (en) * 2015-08-24 2015-12-09 河海大学 Hollow type combination beam for quick construction and construction method
CN204899033U (en) * 2015-08-30 2015-12-23 郭勇 Shaped steel concrete combination flat beam

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