CN203640155U

CN203640155U - Truss concrete superposed beam

Info

Publication number: CN203640155U
Application number: CN201320890359.1U
Authority: CN
Inventors: 张昭祥; 蒋路; 贾正桐
Original assignee: BAOSTEEL BUILDING SYSTEM INTEGRATION Co Ltd
Current assignee: BAOSTEEL BUILDING SYSTEM INTEGRATION Co Ltd
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-06-11
Anticipated expiration: 2023-12-31

Abstract

The utility model discloses a truss concrete superposed beam which comprises a prefabricated layer and a superposed layer, wherein the prefabricated layer comprises a truss reinforced steel bar net and a concrete layer below the truss reinforced steel bar net; the truss reinforced steel bar net comprises a truss, vertical reinforced steel bars and stirrups; the truss comprises lower chords, upper chords and web members for connecting the lower chords and the upper chords; the lower chords of the truss are positioned above the concrete of the prefabricated layer; the superposed layer is a cast-in-place concrete layer positioned on the prefabricated layer. The truss concrete superposed beam has the characteristics that the construction is rapid and convenient without temporary support, a relatively large placing length is provided for floor plates, the quality is ensured, the integrality is good, and the economical efficiency is excellent.

Description

A kind of truss concrete folding beam

Technical field

The utility model relates to building unit technical field, particularly a kind of truss concrete folding beam.

Background technology

The construction of superstructure is the dominant item in building structure construction, and the demand of duration, quality, expense and labour on engineering construction has important direct impact.Have in beam superstructure at present the most widely used, beam is the supporting of plate, and the construction of plate is directly subject to the impact of beam.At present in conventional concrete beam: need to establish temporary supporting, formwork supporting plate, on-the-spot steel project when in-situ beam casting large, thereby bring that speed of application is slow, labour demand many and the problem such as construction quality is wayward; Common concrete folding beam, though without formwork, but still to establish temporary supporting, wear muscle colligation, and because of the existence of its stirrup, cause the shelving length of assembling (entirety) formula floor very limited, almost directly determined that floor must add temporary supporting, and then made the speed of application of whole superstructure be subject to serious restriction, labour's demand and expense also have certain increase.

Summary of the invention

The purpose of this utility model is to provide a kind of truss concrete folding beam, and it has advantages of convenient and quick construction and provides larger shelving length, globality and good economy performance without temporary supporting, for floor.

For achieving the above object, technical scheme of the present invention is:

A kind of truss concrete folding beam, it comprises, preformed layer comprises the layer of concrete of truss bars net and its underpart; Described truss bars net comprise truss, some handling reinforcements and on some stirrups; Described truss comprises the web member of lower chord, upper chord and connection; The upper chord of described truss is positioned at the top of preformed layer layer of concrete; Overlapping layers, it is the cast-in-situ concrete layer being positioned on described preformed layer.

Further, described truss is triangular truss, comprises at least two upper chords that be arranged in parallel, at least two lower chords that be arranged in parallel, two web members; Described upper and lower chord member is connected by web member.

Described truss is triangular truss, comprises the upper chord of three parallel interval settings, four lower chords that be arranged in parallel, two web members; Described upper and lower chord member is connected by web member; Two web member tops are between three upper chords, and described four lower chords are positioned at the both sides, bottom of two web members between two.

Described truss bars net and two lower chords between sustained height place also establish the Reinforcement parallel with lower chord.

Described truss is parallel chord truss, comprises at least two upper chords that be arranged in parallel, at least two lower chords that be arranged in parallel, two web members, at least one bending reinforcing steel bar; Between described upper chord, be connected to same plane by bending reinforcing steel bar; Upper and lower chord member is connected by web member.

Described bending reinforcing steel bar is waveform or bow font.

Described truss is triangular truss or parallel chord truss, comprises a upper chord, at least two lower chords that be arranged in parallel, two web members; Described upper chord is horizontally disposed with, and two web member upper ends are connected in upper chord lower surface, and lower chord is connected to web member bottom.

Described upper chord is reinforcing bar, steel plate, shaped steel or steel pipe.

Handling reinforcement described in the utility model is plain bars, and effect is to connect stirrup, and for it provides fulcrum, its quantity can change flexibly;

Stirrup described in the utility model is plain bars, the Reinforcement that it connects lower chord, handling reinforcement and may set up.

The beneficial effects of the utility model:

1. when beam is constructed, without temporary supporting, can reduce corresponding artificial and Master Cost, be conducive to improve speed of application, when what is more important is multilayer superstructure, precondition has been created in construction.

2. for floor provides larger shelving length, during for construction, remove restriction without the application of temporary supporting floor, will bring the decline of lifting greatly, labour demand and correlative charges of floor construction speed.Development for assembled architecture will be significant.

3. because truss can effectively connect preformed layer and overlapping layers, make the globality of superposed beam obtain strong assurance.

4. superposed beam scene, except the reinforcing bar at bearing place, without layout and the colligation of other extra reinforcing bars, and does not need template, and site work amount is very little, and site operation is simple and quick, and artificial demand is very little.

5. steel bar girder can suitability for industrialized production, precast plate suitability for industrialized production, and upper and lower protective layer thickness is secure, and site operation is simple, and the quality of superposed beam can effectively be guaranteed.

Situ wet workload reduce, without support and template, consumptive material is few, economizes on resources and expense, and is conducive to safety construction and protection of the environment; The batch production of preformed layer, artificial, support and formwork cost reduces and speed of application promotes the comprehensive benefit of bringing, makes this superposed beam have stronger competitiveness.

Accompanying drawing explanation

Fig. 1 is the longitudinal plan of the utility model embodiment 1;

Fig. 2 is the drawing in side sectional elevation of the utility model embodiment 1;

Fig. 3 is the drawing in side sectional elevation of the utility model embodiment 2;

Fig. 4 be in Fig. 3 parallel chord truss A portion enlarged diagram;

Fig. 5 is the drawing in side sectional elevation of the utility model embodiment 3;

Fig. 6 is the drawing in side sectional elevation of the utility model embodiment 4;

Fig. 7 is the drawing in side sectional elevation of the utility model embodiment 5;

Fig. 8 is the drawing in side sectional elevation of the utility model embodiment 6.

The specific embodiment

Referring to Fig. 1, Fig. 2, truss concrete folding beam of the present utility model, comprises, preformed layer 1, and it comprises the layer of concrete 12 of truss bars net 11 and its underpart; Described truss bars net 11 comprises truss 13, handling reinforcement 14 and along stirrup 15; Described truss 13 comprises upper chord 131, lower chord 132 and is connected both web members 133; The upper chord 131 of described truss is positioned at the top of preformed layer concrete 12; Overlapping layers 2, it is the cast-in-situ concrete layer being positioned on described preformed layer 1, overlapping layers 2 is interior except beam basis is in bearing place configuration reinforcement, the no longer any reinforcing bar of additional configuration.

Truss 13 described in the utility model is triangular truss, comprises the upper chord 131 of three parallel interval settings, four lower chords that be arranged in parallel 132, two web members 133; Described upper and lower chord member 131,132 is connected by web member 133; Two web member 133 tops are between three upper chords 131, and described four lower chords 132 are positioned at the both sides, bottom of two web members 133 between two.

Described handling reinforcement 14 is plain bars, and effect is to connect stirrup 15, and for it provides fulcrum, its quantity can change flexibly; Described stirrup 15 is plain bars, and it connects lower chord 132, handling reinforcement 14.

Referring to Fig. 3, Fig. 4, the concrete folding beam of the utility model embodiment 2, the difference of itself and embodiment 1 is: truss 13 is parallel chord truss, and upper chord 131 connects by bending reinforcing steel bar 134, thereby can increase the effective range of upper chord; The quantity of upper chord 131 can change flexibly, but should be greater than two; Described bending reinforcing steel bar 134 is plane wave shape wave or is plane bow font, and also available sheet iron etc. is alternative for it.

Referring to Fig. 5, the concrete folding beam of the utility model embodiment 3, the difference of itself and embodiment 1 is: the quantity of upper chord 131 is reduced to two, and the quantity of lower chord 132 is reduced to two; Embodiment 3 is applicable to the less situation of span of beam.

Referring to Fig. 6, the concrete folding beam of the utility model embodiment 4, the difference of itself and embodiment 1 is: truss 13 is parallel chord truss, and upper chord 131 adopts steel plate, its effect is the Compression Stability that improves upper chord.

Referring to Fig. 7, the concrete folding beam of the utility model embodiment 5, it is with the difference of embodiment 1: setting up the Reinforcement parallel with lower chord 132 16 with lower chord 132 sustained height places, its Main Function is the bearing capacity that improves superposed beam.

Referring to Fig. 8, the concrete folding beam of the utility model embodiment 6, it is with the difference of embodiment 3: setting up the Reinforcement parallel with lower chord 132 16 with lower chord 132 sustained height places, its Main Function is the bearing capacity that improves superposed beam.

Claims

1. a truss concrete folding beam, is characterized in that, comprise,

Preformed layer, comprises the layer of concrete of truss bars net and its underpart; Described truss bars net comprise truss, some handling reinforcements and on some stirrups; Described truss comprises the web member of lower chord, upper chord and connection; The upper chord of described truss is positioned at the top of preformed layer layer of concrete;

Overlapping layers, it is the cast-in-situ concrete layer being positioned on described preformed layer.

2. truss concrete folding beam as claimed in claim 1, is characterized in that, described truss is triangular truss, comprises at least two upper chords that be arranged in parallel, at least two lower chords that be arranged in parallel, two web members; Described upper and lower chord member is connected by web member.

3. truss concrete folding beam as claimed in claim 1, is characterized in that, described truss is triangular truss, comprises the upper chord of three parallel interval settings, four lower chords that be arranged in parallel, two web members; Described upper and lower chord member is connected by web member; Two web member tops are between three upper chords, and described four lower chords are positioned at the both sides, bottom of two web members between two.

4. the truss concrete folding beam as described in claim 1 or 2 or 3, is characterized in that, described truss bars net and two lower chords between sustained height place also establish the Reinforcement parallel with lower chord.

5. truss concrete folding beam as claimed in claim 1, is characterized in that, described truss is parallel chord truss, comprises at least two upper chords that be arranged in parallel, at least two lower chords that be arranged in parallel, two web members, at least one bending reinforcing steel bar; Between described upper chord, be connected to same plane by bending reinforcing steel bar; Upper and lower chord member is connected by web member.

6. truss concrete folding beam as claimed in claim 5, is characterized in that, described bending reinforcing steel bar is waveform or bow font.

7. truss concrete folding beam as claimed in claim 1, is characterized in that, described truss is triangular truss or parallel chord truss, comprises a upper chord, at least two lower chords that be arranged in parallel, two web members; Described upper chord is horizontally disposed with, and two web member upper ends are connected in upper chord lower surface, and lower chord is connected to web member bottom.

8. the truss concrete folding beam as described in claim 1 or 7, is characterized in that, described upper chord is reinforcing bar, steel plate, shaped steel or steel pipe.