CN204456566U

CN204456566U - For the core of cast-in-place concrete hollow building roof

Info

Publication number: CN204456566U
Application number: CN201520011700.0U
Authority: CN
Inventors: 谈拥军; 项明
Original assignee: XIANGTAN ZHONGCHENG HONGXIN BUILDING MATERIAL Co Ltd
Priority date: 2015-01-09
Filing date: 2015-01-09
Publication date: 2015-07-08
Anticipated expiration: 2025-01-09

Abstract

For the core of cast-in-place concrete hollow building roof, comprise core body, on described core body, horizontal array has ripple muscle, the height of described ripple muscle is no more than 0.5 ~ 1.0mm, the spacing of described ripple muscle and ripple muscle is 3-4 times of adjacent corrugations muscle height, and the two ends of described core body are provided with end cap block section, and the length of described end cap block section is 1cm-2cm, the thickness of core body wall is 0.1-0.5mm, and described core body adopts steel plate or iron plate to be made.The utility model structure is simple, low cost of manufacture; Good stability, adopts steel plate or iron plate to be made; Intensity is high, has ripple muscle, plays the effect of reinforcing rib; Dead load reduces greatly, improves structure stress, reduces foundation load, reduces material usage, reducings the construction costs, reach energy-conserving and environment-protective.

Description

For the core of cast-in-place concrete hollow building roof

Technical field

The utility model relates to a kind of core, especially relates to a kind of core for cast-in-place concrete hollow building roof.

Background technology

At present, the dead load of constructional materials accounts for more than 70% of built-loading, and the floor as horizontal member accounts for again more than 70% of construction weight.The intensity of current architecture configuration material, safety, durability improve by improving concrete strength, and this just requires to improve concrete intensity to meet, and cement strength is required more and more higher, causes the crack problem of concrete structure more and more serious.The thinking of one-sided raising concrete strength has been difficult to possible, how to alleviate dead load, thus reaches the developing direction of material high-strength light necessarily building structure.

Cast-in-place concrete hollow building roof in the market, main use two large class obturators: is inorganic material class, adopt enhancement glass fiber cement, are made into difform thin-wall barrel and thin-wall box body; Two is organic material classes, the obturator that (on market more be) adopts polyphenyl block or polyphenyl foam to be made.One, adopt inorganic material, wall thickness is thin uneven, and breakage rate is high, cracky when transport and construction fluid concrete, concrete directly penetrates in damaged thin-wall box body, can not play hollow effect, add the load of former project organization, cause workmanship to there is potential safety hazard.Thin-wall box body (cylindrical shell) cement composite material makes, and makes cost by hand also quite high; Also need to have increased in work progress solve supports, isolation, drift, cushion block, rapid wear, matter weight, on the series of problems such as bottom flange control etc. and the invisible cost of generation.Manual production, does not realize suitability for industrialized production, and the requirement that can not guarantee supply, affects construction speed.Thin-wall box body (cylindrical shell) supply of material difficulty, job site is stacked and is taken a large amount of construction areas, makes troubles to execution control.

Two, polyphenyl foam organic material is adopted ,temperature will produce toxic gas more than 70 DEG C, can produce fire safety problem, do not reach fire-fighting requirements when superstructure uses and constructs, and have a strong impact on workmanship and will deposit potential safety hazard in use, belong to toxic contaminants product.

Utility model content

Technical problem to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, provides one to alleviate deadweight, and fireproof performance is convenient to well the core for cast-in-place concrete hollow building roof transported.

The utility model solves the technical scheme that its technical problem adopts, for the core of cast-in-place concrete hollow building roof, comprise core body, on described core body, horizontal array has ripple muscle, the height of described ripple muscle is 0.5 ~ 1.0mm, the spacing of adjacent corrugations muscle and ripple muscle is 3-4 times (preferably 3.5 times) of ripple muscle height, the two ends of described core body are provided with end cap block section, the length of described end cap block section is the preferred 2cm of 1cm-2cm(), the thickness of core body wall is the preferred 0.12-0.16mm of 0.1-0.5mm(, more preferably 0.15 mm), described core body adopts steel plate or iron plate to be made.

Further, described core body is cylinder, during use, slab core mould body is made into cylindrical, and both ends adopt foam end caps, iron plate end cap or plastic end cover shutoff, and use glue or pulp-water involution.

Compared with prior art, the utility model structure is simple, low cost of manufacture; Good stability, adopts steel plate or iron plate to be made; Intensity is high, and core body is provided with ripple muscle, plays the effect of reinforcing rib; Dead load reduces greatly, improves structure stress, reduces foundation load, reduces material usage, reducings the construction costs, reach energy-conserving and environment-protective, the object of sustainable development.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model one embodiment;

Fig. 2 is the schematic cross-section of core shown in Fig. 1;

Fig. 3 is embodiment 1 radial local resistance to compression load method of inspection structural representation;

Fig. 4 is the sectional view of A-A shown in Fig. 3.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model is described further.

Embodiment 1

With reference to accompanying drawing 1 and Fig. 2, the present embodiment comprises core body 1, on described core body 1, horizontal array has ripple muscle 2, the height of described ripple muscle 2 is 1mm, adjacent corrugations muscle 2 and the spacing of ripple muscle are 3 times of ripple muscle 2 height, and the two ends of described core body 1 are provided with end cap block section 3, and the length of described end cap block section 3 is 1cm, the thickness of core body wall is 0.12mm, and described core body 1 adopts steel plate to be made.

Core body 1 is cylinder, during use, slab core mould body 1 is made into cylindrical, and both ends adopt foam end caps shutoff, and use glue involution.

During making, core body 1 is slab core mould body, is convenient to transport, during use, at the scene slab core mould body 1 is rolled into cylinder core mould body, and core body two ends adopt foam end caps shutoff, and use glue involution.

The core performance of the present embodiment is as table 1:

sequence number	project	index request
			1	radial local resistance to compression load	when being loaded into 1 000N, breakage should not be there is
2	anti-vibrating and impact	, there is not breakage in Φ 30 plug-in type vibrating rod urged against surface vibration 1min.
			3	water absorption rate %	≤ 5

Shown in the radial local resistance to compression load method of inspection (see Fig. 3, Fig. 4) of core, and should follow these steps to carry out:

A) sample 1 interface getting nature lies in a horizontal plane on flat board, for preventing sample 1 from rolling, and the triangle chock 3 beyond the Great Wall in its both sides;

B) be 100cm by bearing area ²the cambered surface bearing plate 3 of (length 10cm, arc direction projection size 10cm) is placed on the top of sample 1 medium position;

C) load on cambered surface bearing plate 3, unload after leaving standstill 10min, and records tests result.

Embodiment 2

The present embodiment comprises core body 1, on described core body 1, horizontal array has ripple muscle 2, the height of described ripple muscle 2 is 0.5mm, described ripple muscle 2 and the spacing of adjacent corrugations muscle are 4 times of ripple muscle height, the two ends of described core body are provided with end cap block section 3, the length of described end cap block section 3 is 1.8cm, and the thickness of core body wall is 0.5mm, and described core body 2 adopts iron plate being made.

Described core body 2 is cylinder, during use, slab core mould body 2 is made into cylinder, and both ends adopt the shutoff of iron plate end cap, and use pulp-water involution.

During making, core body 1 is slab core mould body, is convenient to transport, during use, at the scene slab core mould body 1 is rolled into cylinder core mould body, and core body two ends adopt the shutoff of iron plate end cap.

The core performance of the present embodiment is as table 2:

sequence number	project	index request
			1	radial local resistance to compression load	when being loaded into 950N, breakage should not be there is
2	anti-vibrating and impact	, there is not breakage in Φ 30 plug-in type vibrating rod urged against surface vibration 1min.
			3	water absorption rate %	≤ 5

Embodiment 3

The present embodiment comprises core body, on described core body, horizontal array has ripple muscle, the height of described ripple muscle is 0.8mm, the spacing of described ripple muscle and ripple muscle is 3.5 times of adjacent corrugations muscle height, the two ends of described core body are provided with end cap block section, the length of described end cap block section is 2cm, and the thickness of core body wall is 0.15mm, and described core body adopts steel plate to be made.

Described core body is cylinder, during use, slab core mould body is made into cylindrical, and both ends adopt plastic end cover shutoff, and use glue involution.

During making, core body 1 is slab core mould body, is convenient to transport, during use, at the scene slab core mould body 1 is rolled into cylinder core mould body, and core body two ends adopt plastic end cover shutoff, and use glue involution.

The core performance of the present embodiment is as table 3:

sequence number	project	index request
			1	radial local resistance to compression load	when being loaded into 1 200N, breakage should not be there is
2	anti-vibrating and impact	, there is not breakage in Φ 30 plug-in type vibrating rod urged against surface vibration 1min.
			3	water absorption rate %	≤ 5

Claims

1. for the core of cast-in-place concrete hollow building roof, it is characterized in that, comprise core body, on described core body, horizontal array has ripple muscle, and the height of described ripple muscle is 0.5 ~ 1.0mm, and the spacing of described ripple muscle and ripple muscle is 3-4 times of adjacent corrugations muscle height, the two ends of described core body are provided with end cap block section, the length of described end cap block section is 1cm-2cm, and the thickness of core body wall is 0.1-0.5mm, and described core body adopts steel plate or iron plate to be made.

2. the core for cast-in-place concrete hollow building roof according to claim 1, it is characterized in that, described core body is cylinder, during use, slab core mould body is made into cylindrical, both ends adopt foam end caps, iron plate end cap or plastic end cover shutoff, and use glue or pulp-water involution.

3. the core for cast-in-place concrete hollow building roof according to claim 1 and 2, is characterized in that, the height of described ripple muscle is 0.8mm.

4. the core for cast-in-place concrete hollow building roof according to claim 1 and 2, is characterized in that, the spacing of described ripple muscle and ripple muscle is 3.5 times of adjacent corrugations muscle height.

5. the core for cast-in-place concrete hollow building roof according to claim 1 and 2, is characterized in that, the length of described end cap block section is 2cm.

6. the core for cast-in-place concrete hollow building roof according to claim 1 and 2, is characterized in that, the thickness of core body wall is 0.12-0.16mm.

7. the core for cast-in-place concrete hollow building roof according to claim 6, is characterized in that, the thickness of core body wall is 0.15 mm.