CN2463456Y

CN2463456Y - Heavy steel fibre concrete manhole cover matched with cast ion derrick

Info

Publication number: CN2463456Y
Application number: CN 00266845
Authority: CN
Inventors: 蒋天涛; 蒋晓鸥
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-21
Filing date: 2000-12-21
Publication date: 2001-12-05
Anticipated expiration: 2010-12-21

Abstract

The utility model relates to a heavy duty steel fiber concrete manhole cover matched with a cast ion manhole seat, which is composed of a panel, reinforcing ribs, reinforcing hoops and a supporting ring. The utility model is characterized in that the manhole cover is circular, and the lower part of the panel is provided with the radial reinforcing ribs. A three-dimensional reinforcing space steel rib framework is matched with the manhole cover, and the circumferential edge of the manhole cover is provided with the reinforcing hoops. The supporting ring is arranged outside the reinforcing hoops. The manhole cover is matched with a national universal heavy duty manhole seat in the figure S147 made of cast iron to use. Compared with the existing heavy duty cast iron manhole cover which satisfies steam-15 load use requirements, the manhole cover decreases the weight 30% or so, and reduces the price 40% or so. The utility model can satisfy steam-20 load use requirements. The shock resistance is good, and the utility model which is not easy to corrode or lose. The utility model can be widely used for manhole shafts in various roads, fields or areas.

Description

Heavy steel fibrous concrete well lid with cast iron well seat coupling

The utility model belongs to a kind of manhole well lid of municipal engineering.

Municipal engineering manhole well lid generally is cylinder iron to make.Form by panel and ribs, be garden shape.Ribs is that groined type or radiation are arranged.There is following shortcoming in it: the first will be used a large amount of cast irons, the structure heaviness, and also every all need be made sand mold cast, complex process, and the cost height, production environment is abominable; The 2nd, cast iron is fragile material, and shock resistance is poor; It three is easy corrosions; It four is stolen easily.In 1989, build one innings of scientific research institution and study successful steel fibrous concrete well lid, be generalized to nearly 30 areas, the whole nation since studying successful enhanced fiber mortar and the heavy well lid of fibrous concrete by the Zhongjian Building Science ﹠ Technology Inst., Beijing, obtained outstanding economic benefit and social benefit thereafter.But this well lid can only with the supporting use of concrete walling crib that is complementary with it.Because the hardness of the hardness ratio cast iron of steel fibrous concrete is much lower, the supporting width of cast iron well seat is 16mm only, does not satisfy the supporting width of the needed 50mm of steel fibrous concrete.On the other hand, the thickness of casting iron well lid is 20mm only, so the support cut height of cast iron well seat also has only 20mm, and the thickness minimum of heavy steel fibrous concrete well lid also has 40mm, therefore lose under the situation that only remains cast iron well seat for original casting iron well lid, be replaced by the steel fibrous concrete well lid, the supporting width of cast iron well seat and support cut height all can not meet the demands.So just must together dispose, change the concrete well seat original cast iron well seat together with the concrete below it from the road surface.Original road surface to be destroyed so first, second traffic will be influenced.Municipal sector often is reluctant to change thus, and still adopts casting iron well lid, loses and puts again, has put and has lost, continues to cause damage.Sometimes mend and put untimelyly, will bring security incident.

The purpose of this utility model provides the heavy steel fibrous concrete well lid of a kind of energy and the use of original cast iron well seat coupling, after a certain casting iron well lid is lost, need not change cast iron well seat again, only need put steel fibrous concrete well lid with this cast iron well seat coupling, can use as usual, avoid causing the destruction of road pavement and the influence of traffic for changing cast iron well seat.

The heavy steel fibrous concrete well lid that mates with cast iron well seat of the present utility model, form by panel, ribs, reinforcement hoop and Supporting ring, it is characterized in that: the heavy well lid of being made by steel fibrous concrete with cast iron well seat coupling is a garden shape, be provided with 6 in shape panel bottom, garden, be radial arrangement, longitudinal section is parabolic ribs.Configuration parabolic shape reinforcing bar in the ribs.Reinforcing bar in the panel and the reinforcing bar in the ribs strengthen the space cage of reinforcement with the three-dimensional that stirrup unifies.The periphery of well lid is provided with strengthens hoop.Strengthen the arranged outside Supporting ring of hoop.

Described reinforcement hoop is made garden shape hoop with band steel, burn-ons or do not weld with the well lid panel and water the dowel that builds up integral body in hoop inside.Described Supporting ring is done circular by square steel or round steel, firmly be connected with the reinforcement hoop.Its method of attachment can be that welding, riveted joint or steel pin connect.

Described steel fibre can be the steel fibre of producing with shearing method; Steel fibre that the molten method of taking out is produced or the steel fibre of producing with the cut-out of thin steel (iron) silk etc.

The heavy steel fibrous concrete well lid that mates with cast iron well seat of the present utility model, because the three-dimensional space cage of reinforcement that strengthens of preparation in the well lid, the well lid periphery is provided with strengthens hoop, and the outer Supporting ring that mates with cast iron well seat that is provided with of reinforcement hoop can satisfy vapour--the instructions for use of 20 loads.Every heavily about 45 kilograms, about 120 yuan of price.Than original vapour--every of the heavy casting iron well lid heavy 68 kilograms (seeing former national standard figure S147) that 15 loads use, weight reduces about 30%.About 200 yuan of every price, price reduces about 40%.Shock resistance is not good, and is perishable and lose.Can use with the heavy cast iron well seat coupling of the national standard drawing of S147, can be widely used in the manhole in different kinds of roads, place or area.

Be further described below in conjunction with drawings and Examples pair heavy steel fibrous concrete well lid with cast iron well seat coupling.

Fig. 1 is a vertical view of the present utility model.

Fig. 2 is a sectional drawing of the present utility model.

As shown in the figure, the panel of well lid 1., its back side has 6 ribs 2. to be radial arrangement.The longitudinal section of rib is parabola shaped.Reinforcing bar and the reinforcing bar in ribs of the panel of well lid in 1. strengthens the space cage of reinforcement with the three-dimensional that 3. stirrup unifies.Strengthen hoop and 4. wale panel.5. Supporting ring is located at and is strengthened the hoop outside 4..6. be preformed hole.

The size of well lid is general wide to be φ 600mm--φ 800mm; The thickness of well lid can be 40mm--60mm; The ribs height can be 70mm--150mm, and wide is 30mm--70mm.

The making of well lid, can select the match ratio of steel fibrous concrete according to the material that uses, for example can adopt the 525# ordinary Portland cement by cement: sand: stone=concrete of 1: 2: 1.5 adds the steel fibre of volume of concrete 2% again, mixes and stirs cast by the 0.40--0.50 water/binder ratio.

The heavy steel fibrous concrete well lid that mates with cast iron well seat of the present utility model is extensive use of and can be about substantial contribution of country and cast iron materials, can avoid losing traffic and the human casualty accident that brings because of well lid simultaneously.

Embodiment: as with the square steel of 16mm * 16mm with 16--20 root φ 5 steel pins and strengthen stretching into again after hoop is connected panel and water integral body with panel concrete, form firm connection, or directly weld with strengthening hoop with the round steel of φ 16, its supporting capacity satisfies vapour--the instructions for use of 20 loaded vehicle loads.With the heavy steel fibrous concrete well lid of cast iron well seat coupling, when being used for original road surface casting iron well lid and losing, need not destroy former road surface and change the well seat, directly lay this well lid.Thereby reduce the consumption of manpower and material, avoided influence simultaneously traffic.Be extensive use of and can be country's saving substantial contribution and cast iron materials, can avoid losing traffic and the human casualty accident that brings simultaneously because of well lid.

Claims

1, a kind of heavy steel fibrous concrete well lid that mates with cast iron well seat, by panel, ribs, strengthening hoop and Supporting ring forms, it is characterized in that: the heavy steel fibrous concrete well lid of being made by steel fibrous concrete with cast iron well seat coupling is a garden shape, in the panel bottom 6--8 bar is set, be radial arrangement, longitudinal section is parabolic ribs, configuration parabolic shape reinforcing bar in the ribs, reinforcing bar in panel in configuration reinforcement and the ribs strengthens the space cage of reinforcement with the three-dimensional that stirrup unifies, the reinforcement hoop that the periphery setting of well lid is made by band steel, strengthen the arranged outside Supporting ring of hoop, firmly be connected with the reinforcement hoop.

2, the heavy steel fibrous concrete well lid of as claimed in claim 1 and cast iron well seat coupling, it is characterized in that: Supporting ring can be square steel or round steel.

3, the heavy steel fibrous concrete well lid of as claimed in claim 1 and cast iron well seat coupling is characterized in that: Supporting ring can be welding, riveted joint or steel pin connection with strengthening being connected of hoop.