CN201317909Y

CN201317909Y - Temporary support saddle for bridge

Info

Publication number: CN201317909Y
Application number: CNU2008201915578U
Authority: CN
Inventors: 邹永泉; 胡汉忠
Original assignee: China Railway 11th Bureau Group Co Ltd; Second Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; Second Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2008-10-23
Filing date: 2008-10-23
Publication date: 2009-09-30
Anticipated expiration: 2018-10-23

Abstract

The utility model discloses a temporary support saddle for a bridge, which is used for the converting of a continuous bridge system after being assembled simply. The temporary support saddle for a bridge consists of a pressure-bearing block, a ladle hoop and bagged sand grain, which is characterized in that the ladle hoop is not provided with a bottom; the bagged san grain and the pressure-bearing block which are arranged in the ladle hoop have a certain height; a corresponding clearance is left between the pressure-bearing block and the ladle hoop. When the bridge system is converted, the ladle hoop is lifted upwards, and the bagged sand grain is taken out completely, so that the pressure-bearing block is unloaded stably until the bridge body falls down to a permanent support saddle, thus finishing the system converting of the bridge. The utility model has the advantages of simple structure, convenient operation and saving the material, which can be used as a source of a reference for other similar engineering.

Description

A kind of bridge temporary support

Technical field

The utility model relates to bridge pad, especially relates to a kind of temporary support of bridge system conversion usefulness.

Background technology

Behind bridge elder generation freely-supported, reach in the system conversion process of other form continuously, all need to be provided with temporary support.At present, the setting of temporary support mainly contains following several mode:

1, the temporary support that utilizes support, steel member to form.Though this temporary support is reliable and stable, have following a few point defect: the one, make complexity, and can only disposablely use, to remove the waste steel behind the worker with the acetylene-oxygen thermal cutting; The 2nd, make the required precision height, the situation complicated and changeable with the scene is difficult to coincide, and the extremely difficult modification of mistake is arranged slightly; The 3rd, limited to by the place, need set up the higher operating platform of degree of safety, and the bearing space need satisfy the constructor burning torch is goed deep into cutting in the bearing, need big with the space.If permanent bearing is a rubber-type, distance is too near when cutting off, and also easy permanent bearing to rubber-type causes damage.

2, steel sand tube temporary support is set.This temporary support difficulty of processing is bigger, and inner/outer tube all will be processed, and also needs to be provided with to put the sand mouth, and its steel using amount is also relatively large.Owing to the quantity of the sand that needs usefulness is more relatively, the decrement of sand need be definite by testing, and space requirement must be between 10-50cm.Because the space is too big, steel cylinder requires just high, and steel cylinder is too high then unstable, if the space is too little, and the falling leeway of then not putting sand, steel cylinder is difficult for removing, and does not tear open not get off even.

3, the sulphur-bonded mortar bearing is set.In the middle of being typically provided to, this bearing accompanies the concrete precast block of sulphur-bonded mortar interlayer, pre-buried resistance wire in the sulphur interlayer, simultaneously the resistance wire of a plurality of bearings is cascaded, unloads the beam body by thawing that the sulphur-bonded mortar interlayer of a plurality of bearings is switched on synchronously during the system conversion.The deficiency of this bearing: the one, make inconvenient, sulphur-bonded mortar must be in the container of special use heat fused and stir moulding, and the top that overlays on the bottom prefabricated section with mould when needing while hot is pressed into resistance wire, also the top prefabricated section to be installed while hot, if the careless slightly waste product that just occurs easily in the operation, and protecting badly, personnel also poison easily; The 2nd, after temporary support loaded, through the placement of some months, the series connection between each resistance wire went wrong easily, influence reliability, sometimes even the situation that can cause whole bearings to switch on again and detect, and this heavy inspection must be operated by the professional, is very much trouble; The 3rd, bearing needs advanced pedestrian worker to cut if local damage arranged, and in addition reinforcement strengthens work difficulty then; The 4th, sulphur-bonded mortar is disposable material, and cost is higher, belongs to Ministry of State Security's gate control goods and materials again, and buying is difficulty relatively.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, and is reliable and stable, adjusts flexibly, and cost is low, the temporary support of making convenient disassembly and can realizing reusing.

The technical solution of the utility model is for this reason: a kind of bridge temporary support, form by pressure block, ladle hoop and packed sand grains, it is characterized in that: the ladle hoop is the no end, places packed sand grains and pressure block in the ladle hoop that corresponding height is arranged, and between pressure block and the ladle hoop piece corresponding slit is arranged, during the conversion of bridge system, up sled takes off the ladle hoop, draws clean packed sand grains, makes pressure block steadily unload, on the extremely permanent bearing of beam body drop, thereby the system of finishing bridge is changed.

Improvement to such scheme is: ladle hoop height of the described no end must be less than the height of pressure block, an opposite side in ladle hoop bottom is provided with corresponding little recess, and leave the slit of 2-4mm between ladle hoop and the pressure block, so that draw out sand grains and the ladle hoop that gets loose.

Further improvement of these options is: described pressure block is the concrete precast block of outsourcing one deck pvc pipe, matches at the bottom of its top and the beam, to guarantee that pressure-bearing surface is closely connected and the corner concrete pressure block is intact.

Further improving again of such scheme is: described packed sand grains, sand adopt clean dry medium coarse sand, and sack is the soft polybag that respective strengths is arranged.

The utility model has been saved steel using amount because pressure block adopts concrete prefabricatedly, and is cost-saved, and the steel sand tube adopts the ladle hoop at the no end to remove to put the sand mouth, and is easy to process; Sand grains adopts plastic bag packaging, can reduce the friction with the ladle hoop, help the ladle hoop smoothly sled take off; Ladle hoop and the pressure block that is complementary with it, shape can be made into cylindrical, square column type or other shape, quantity can be arranged to monolithic or polylith according to deck-siding, can suit measures to local conditions during use; During the construction of Liang Tifen connection, the ladle hoop and the pressure block of temporary support are reusable, improve the utilization rate of temporary support.Therefore, the utility model is compared with above-mentioned several temporary supports, has reduced many miscellaneous manufacturing procedures, has also exempted the drawback that easily goes out waste product, is worth other similar engineering that temporary support need be set to be used for reference.

Description of drawings

Fig. 1, elevational schematic view of the present utility model;

Schematic diagram is looked at Fig. 2, mansion of the present utility model;

The specific embodiment

As shown in Figure 1 and Figure 2,1 is pressure block, the 2nd among the figure, ladle hoop, the 3rd, shroud ring recess, the 4th, hoop piece slit, the 5th, packed sand grains, the 6th, beam body, the 7th, pier cap.

Because the stressed back of the ladle hoop of square column type or other shapes is yielding, good far away from cylindrical steel shroud ring force-bearing situation, therefore, do not having under the situation of specific (special) requirements, the concrete pressure block that should preferentially select columniform ladle hoop for use and be complementary with its shape, present embodiment are selected two columniform ladle hoops and pressure block for use.

Earlier ladle hoop 2 accurately is positioned over reposefully during enforcement on the temporary support position that Bridge Pier cap 7 configures, put into then through the measured packed sand grains 5 of tester, by hand that packed sand grains 5 arrangements are plain, its height in hoop is controlled at 2-4cm, again pressure block 1 is put into ladle hoop 2; The roughness control of whole temporary support is not less than 2mm with hoop piece slit 4 and is advisable; When beam body 6 needs converting systems by the time, utilize shroud ring recess 3 that sand grains is drawn pine earlier, ladle hoop 2 up can be prized with the power of putting slightly with crowbar again and be taken off, unwater clean packed sand grains 5 with little slotting skewer then, make pressure block 1 steadily unload, when beam body 6 places on the permanent bearing, promptly dismountable temporary support.

Claims

1, a kind of bridge temporary support is made up of pressure block, ladle hoop and packed sand grains, it is characterized in that: the ladle hoop is the no end, places packed sand grains and pressure block in the ladle hoop that corresponding height is arranged, and between pressure block and the ladle hoop corresponding slit is arranged.

2, a kind of bridge temporary support as claimed in claim 1, it is characterized in that: ladle hoop height of the described no end must be less than the height of pressure block, an opposite side in ladle hoop bottom is provided with corresponding little recess, and leaves the slit of 2-4mm between ladle hoop and the pressure block.

3, a kind of bridge temporary support as claimed in claim 1, it is characterized in that: described pressure block is the concrete precast block of outsourcing one deck pvc pipe, matches at the bottom of its top and the beam.

4, a kind of bridge temporary support as claimed in claim 1 is characterized in that: described packed sand grains, sand adopt clean dry medium coarse sand, and sack is the soft polybag that respective strengths is arranged.