CN100455737C

CN100455737C - I type keel for building

Info

Publication number: CN100455737C
Application number: CNB2003101034064A
Authority: CN
Inventors: 梁保卫; 李淑芳; 杨建华; 王海燕
Original assignee: Beijing New Building Material Group Co Ltd
Current assignee: Beijing New Building Material Group Co Ltd
Priority date: 2003-04-08
Filing date: 2003-10-31
Publication date: 2009-01-28
Anticipated expiration: 2023-10-31
Also published as: CN1624265A

Abstract

The invention discloses a damping keel for building, comprising two parallel a first flank and a second flank of long strip shape, a first damping wing and a second damping wing of long strip shape respectively vertically extending at the reverse direction of different sides of the first flank and the second flank, and damping fragment of long strip shape connecting between the opposite sides of the first damping wing and the second damping wing. The included angle between the said damping fragment and the first damping wing and the second damping wing is 100 degree to 170 degree, and the cross-section thereof is approximately 'Z' mold. The sound insulation wall is composed of keel, thsitle board and rockwool, therefore the sound insulation effect is obviously enhanced compared to the same wall body structure, especially the sound insulation effect is better at low frequency of 100-500Hz.

Description

A kind of Z type keel for building

Technical field

The present invention relates to a kind of keel for building.

Background technology

Keel for building usually constitute lightweight body of wall or furred ceiling with gypsum plank, rock wool etc.Advantage such as the light partition wall in the modern architecture has that cost is low, area occupied is little, easy construction, use are flexible is widely used.

Available technology adopting be a kind of " C " type keel, be parallel to each other and constitute by two strips at the flank that connects to side, the defening effect of the body of wall that this keel and gypsum plank, rock wool are formed is limited, especially not good to the defening effect of low frequency range, be difficult to satisfy people have good defening effect to environment such as room, offices requirement.

Can take in practice on " C " type keel, to add the vibration damping bar, utilize multi-layered sheet superimposed, perhaps adopt modes such as two walls are discrete, elasticity connection to improve the defening effect of body of wall, but take these modes can increase the thickness of body of wall, increase cost, construction is got up also cumbersome.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of annex that need not to increase, and can effectively improve the keel of defening effect.

In order to achieve the above object, the invention provides a kind of keel for building, first flank and second flank that comprise two strips that are parallel to each other, the first vibration damping wing and the second vibration damping wing that described first flank and second flank do not vertically extend respectively on the rightabout of homonymy, and be connected in vibration damping section between the described first vibration damping wing and the second vibration damping wing opposite side, form the angles (less angle) of 120 degree～140 degree between this vibration damping section and the first vibration damping wing and the second damping wing respectively.

Be formed with reinforcing rib on above-mentioned first flank and second flank." L " type reinforcing rib that this reinforcing rib can form for the opposite side at described first flank and second flank, it perhaps is the vertical reinforcing rib of rolling over the yi word pattern that forms down of opposite side at described first flank and second flank, perhaps being the corrugation reinforcing rib that all or part of component surface in the set that described first flank, second flank, the first vibration damping wing, the second vibration damping wing and vibration damping section are formed forms, perhaps is the combination of multiple pattern reinforcing rib.

Can on all or part of member in the set that above-mentioned first flank, second flank, the first vibration damping wing, the second vibration damping wing and vibration damping section are formed, be equipped with pit, to improve intensity.

Above-mentioned keel can be made by light steel building material.

Can be equipped with pit on above-mentioned first flank, second flank, skid when preventing nailing.

When vibration damping keel of the present invention were used for insulating against sound body of wall or other partiting sound member, the energy in the time of can cutting down the sound wave transmission effectively reached absorption portion acoustic energy, improves defening effect, thereby improves the sound insulation factor of total, staticizes acoustic environment.At the next thickness that can reduce sound insulating structure of the identical situation of defening effect, save cost.

Description of drawings

Fig. 1 is the front view (cross-sectional view) of first embodiment of the invention keel;

Fig. 2 is the left view of first embodiment of the invention keel;

Fig. 3 is the front view of second embodiment of the invention keel;

Fig. 4 is the front view of third embodiment of the invention keel;

Fig. 5 is the front view of fourth embodiment of the invention keel.

The specific embodiment

As depicted in figs. 1 and 2, the vibration damping keel of first embodiment of the invention are that first flank 1, second flank 2, the first vibration damping wing 3, the second

vibration damping wing

4 and 5 of the vibration damping sections by strip constitutes, first,

second flank

1,2 are parallel to each other, the right side of first flank 1 downwards with 3 vertical connections of the first vibration damping wing, the left side of second flank 2 makes progress and 4 vertical connections of the second vibration damping wing; The opposite side of the first vibration damping wing 3 and the second vibration damping wing 4 links to each other by vibration damping section 5, and forms 130 ° angle.Its cross section is roughly " Z " type.Keel in the present embodiment adopt the continuous hot galvanizing steel band, and one-body molded through rolling process, its thickness can be between 0.5mm～1mm.

Identical with existing " C " type keel is, the present invention has two first flanks that are parallel to each other and second flank, but the present invention has increased the design of vibration damping section and coupled two vibration damping wings, this structure makes the flexible increase of keel, has better damping property, energy in the time of cutting down the sound wave transmission behind the composition body of wall effectively, absorption portion acoustic energy improves defening effect.

Table 1 is that the body of wall of filling out 50mm rock wool, 12mm Thistle board and 12mm Thistle board formation in 12mm Thistle board, 12mm Thistle board, " C " type 75 serial keel is tested the sound insulation factor data that obtain, table 2 is that the techonosphere that will fill out the 50mm rock wool in above-mentioned " C " type 75 serial keel changes in the present invention " Z " type keel and fills out the 50mm rock wool, promptly first flank and second flank are parallel to the panel of both sides, test the data that obtain then.

Table 1

Frequency ZH	100	125	160	200	250	315	400	500	630	800	1000
Frequency ZH	100	125	160	200	250	315	400	500	630	800	1000	Sound insulation factor dB	26.5	33.0	33.0	39.6	45.0	46.5	48.5	49.5	51.0	53.0	55.0
Frequency ZH	1250	1600	2000	2500	3150	4000	RW	STC				Sound insulation factor dB	26.5	33.0	33.0	39.6	45.0	46.5	48.5	49.5	51.0	53.0	55.0
Frequency ZH	1250	1600	2000	2500	3150	4000	RW	STC				Sound insulation factor dB	55.5	56.5	56.5	52.0	50.5	53.0	52	52

Table 2

Frequency ZH	100	125	160	200	250	315	400	500	630	800	1000
Frequency ZH	100	125	160	200	250	315	400	500	630	800	1000	Sound insulation factor dB	31.0	34.5	34.0	42.5	48.0	48.0	48.0	50.5	53.0	54.5	54.5
Frequency ZH	1250	1600	2000	2500	3150	4000	RW	STC				Sound insulation factor dB	31.0	34.5	34.0	42.5	48.0	48.0	48.0	50.5	53.0	54.5	54.5
Frequency ZH	1250	1600	2000	2500	3150	4000	RW	STC				Sound insulation factor dB	55.5	57.5	57.0	51.0	48.5	49.5	53	53

Wherein, R _WBe national standard (GB121-88) weighted transmission loss; STC is the transaudient grade of Unite States Standard.

As seen, the body of wall that uses the present invention to form, its defening effect has improved 1～3dB, and particularly defening effect is better during low frequency 100～500HZ.

Table 3 is that table 1 is that the body of wall of filling out 50mm rock wool, 9.5mm Thistle board, 12mm Thistle board formation in 12mm Thistle board, 9.5mm Thistle board, " Z " the of the present invention type keel is tested the sound insulation factor data that obtain,

Table 3

Frequency ZH	100	125	160	200	250	315	400	500	630	800	1000
Frequency ZH	100	125	160	200	250	315	400	500	630	800	1000	Sound insulation factor dB	30.5	33.0	35.0	42.5	46.5	48.0	49.5	51.0	51.5	53.5	54.5
Frequency ZH	1250	1600	2000	2500	3150	4000	RW	STC				Sound insulation factor dB	30.5	33.0	35.0	42.5	46.5	48.0	49.5	51.0	51.5	53.5	54.5
Frequency ZH	1250	1600	2000	2500	3150	4000	RW	STC				Sound insulation factor dB	55.5	57.0	58.5	58.0	55.5	52.5	53	53

Find out thus, use keel of the present invention after, therefore after having reduced thickness of wall body, its defening effect is still good than original keel, requires can reduce wall thickness under the identical situation in sound insulation, saves cost.

In order to strengthen the structural strength of two flanks, among second embodiment shown in Figure 3, be formed with the reinforcing rib of " L " type respectively at first, second flank 1 ', 2 ' side.

And in the third embodiment of the present invention shown in Figure 4, first, second flank 1 "; 2 " then vertically roll over the reinforcing rib that forms yi word pattern down at side, and on cross section, first flank 1 " and second flank 2 " width greater than vibration damping section 5 " projection width on the flank width; can certainly be less than vibration damping section 5 " projection width on the flank width, as long as guaranteeing projection and second flank of described first flank on the width on plane, the second flank place partially overlaps, and overall construction intensity enough gets final product, make the angle between vibration damping section and two the vibration damping wings to adjust flexibly like this, can realize between 170 degree at 100 degree, more 120 degree that are located at are between 140 degree in the practice, and this width relation also can be applicable among other embodiment.

Fourth embodiment of the invention shown in Figure 5 is then at first, second flank 1 " ', 2 " ' and vibration damping section 5 " ' surface is formed with corrugation reinforcing rib longitudinally; can certainly only on first, second vibration damping wing, the corrugation reinforcing rib be set, to improve the intensity of member.It can certainly be the combination of multiple pattern reinforcing rib.

In addition, skid when preventing on keel nailing, can also be on first flank, second flank scutching point.Scutching point also helps to improve the intensity of member simultaneously, therefore can be equipped with pit on all or part of member in the set that first flank, second flank, the first vibration damping wing, the second vibration damping wing and vibration damping section are formed.

" Z " of the present invention type keel are in the sound insulation property that improves the body of wall of being made up of it, and self still has enough structural strengths.The Mechanics Performance Testing result who prior art " C " type lightgage steel joist for building and the present invention " Z " type vibration damping keel (adopting embodiment one) is done according to national standard is as follows.

The static load permanent set of lightgage steel joist for building (body of wall centre keel) is 0.3mm (standard-required is smaller or equal to 2.0mm), and the impact permanent set is 9.4mm (standard-required is smaller or equal to 10.0); And the static load permanent set of Z type vibration damping keel (body of wall centre keel) is 0.2mm, and the impact permanent set is 4.7mm.

In addition, the static load permanent set of lightgage steel joist for building (the horizontal keel of body of wall) is 0.3mm (standard-required is smaller or equal to 2.0mm), and the impact permanent set is 9.4mm (standard-required is smaller or equal to 10.0); And the static load permanent set of the horizontal keel of Z type vibration damping keel adapted is 0.2mm, and the impact permanent set is 4.7mm.

As from the foregoing, the mechanical property of Z type lightgage steel joist of the present invention not only meets national standard, but also is better than the C type keel of prior art.

The raising of defening effect of the present invention is not limited to other light steel building materials such as adopting galvanized steel plain sheet, cold-rolled steel sheet by its particular structure decision, can also adopt materials such as aluminium extruded sections, PVC section bar, wooden construction to make.The described vibration damping wing extends from flank one side and can refer to extend from edge, also can be from extending near edge, and promptly the vibration damping wing and flank junction can be

Type or T-shape.Therefore, the equivalent variations of being done on basic structure of the present invention should be included within protection scope of the present invention.

Claims

1, a kind of keel for building, first flank (1) and second flank (2) that comprise two strips that are parallel to each other, it is characterized in that also being included in the first vibration damping wing (3) and the second vibration damping wing (4) that described first flank (1) and second flank (2) do not vertically extend respectively on the rightabout of homonymy, and being connected in vibration damping section (5) between the described first vibration damping wing (3), the second vibration damping wing (4) opposite side, this vibration damping section (5) forms the angles of 100 degree to 170 degree with the first vibration damping wing (3).

2, keel as claimed in claim 1 is characterized in that, are formed with reinforcing rib on described first flank and second flank.

3, keel as claimed in claim 2, it is characterized in that, described reinforcing rib is " L " type reinforcing rib in the opposite side formation of described first flank and second flank, perhaps being the vertical reinforcing rib of rolling over the yi word pattern that forms down of opposite side at described first flank and second flank, perhaps is the corrugation reinforcing rib that all or part of component surface in the set that described first flank, second flank, the first vibration damping wing, the second vibration damping wing and vibration damping section are formed forms.

4, keel as claimed in claim 1 is characterized in that, are equipped with pit on all or part of member in the set that described first flank, second flank, the first vibration damping wing, the second vibration damping wing and vibration damping section are formed.

As claim 1,2,3 or 4 described keel, it is characterized in that 5, the angle between the described vibration damping section and the first vibration damping wing and the second vibration damping wing is 120 degree～140 degree.

As claim 1,2,3 or 4 described keel, it is characterized in that 6, the projection of described first flank on the width on plane, the second flank place partially or completely overlaps with second flank.

7, as claim 1,2,3 or 4 described keel, it is characterized in that these keel are made by light steel building material.

8, as claim 1,2,3 or 4 described keel, it is characterized in that, be equipped with pit on described first flank and second flank.

As claim 1,2,3 or 4 described keel, it is characterized in that 9, described first flank, second flank, the first vibration damping wing, the second vibration damping wing and vibration damping section are one-body molded.