CN109162738A

CN109162738A - Realize that concrete delamination enters the mechanism and its casting craft that mould pours by window

Info

Publication number: CN109162738A
Application number: CN201811334438.8A
Authority: CN
Inventors: 邓历振; 吴力斌; 张宏闽; 范德全; 陈济熙; 陈博极
Original assignee: China Railway 24th Bureau Group Co Ltd; Fujian Railway Construction Co Ltd of China Railway 24th Bureau Group Co Ltd
Current assignee: China Railway 24th Bureau Group Co Ltd; Fujian Railway Construction Co Ltd of China Railway 24th Bureau Group Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2019-01-08

Abstract

The invention relates to a mechanism for realizing layer-by-window-by-window pouring of concrete and a pouring process thereof. There are several windows for passing the concrete material along the length direction and longitudinal direction of the tunnel. Hopper, two three-way distribution troughs, four distribution cylinders and chute, the three-way distribution tank is located on the two lower sides of the main hopper in the same longitudinal plane of the tunnel, and the three-way distribution tank is connected with the main hopper through the first chute, In the facade of the tunnel, the diverting cylinders are located on the two lower sides of the diverting trough, and the diverting cylinders and the diverting trough are connected by the second chute. Tunnel pouring construction efficiency.

Description

Realize that concrete delamination enters the mechanism and its casting craft that mould pours by window

Technical field:

Realize that concrete delamination enters the mechanism and its casting craft that mould pours by window the present invention relates to a kind of.

Background technique:

With increasing for the construction such as highway, railway, the case where highway or railway crossing tunnel, is more and more, carries out in the past to tunnel When pouring construction, it is required to be poured in tunnel height and length direction segmentation, construction efficiency is low, and the mistake after pouring occurs Layer woollen is more, and cleaning task afterwards are huge.

Summary of the invention:

Realize that concrete delamination enters the mechanism and its casting craft that mould pours, the reality by window the purpose of the present invention is to provide a kind of Existing concrete delamination by window enter the mechanism structure that mould pours is simple, design rationally, be conducive to improve tunnel pouring construction efficiency.

To achieve the above object, the present invention adopts the following technical scheme:

The present invention realizes that concrete delamination enters the mechanism that mould pours by window, it is characterised in that: including tunnel and is located at tunnel inner wall The template in face, in the template along length of tunnel direction and it is longitudinal be equipped with several windowings for being used to be passed through concrete material, it is described Windowing includes upper window, middle window and lower window, is successively arranged main hopper, two from top to bottom in the certain length in the tunnel Distributing T-pipe slot, four shunting tumbling barrels and chute, in the same vertical face in tunnel distributing T-pipe slot position in main hopper two downside, Distributing T-pipe slot is connect with main hopper by the first chute, and two downsides that tumbling barrel is located at diversion channel are shunted in the facade in tunnel, It shunts tumbling barrel to connect with diversion channel by the second chute, the chute towards upper window is third chute, and third chute is slipped with second The lower end connection of slot connection, the chute towards middle window are the 4th chute, and the 4th chute shunts the bypass pipe of tumbling barrel with connecting Connection；Chute towards lower window is the 5th chute, and the 5th chute is connected with the lower through-tube for shunting tumbling barrel is connect.

Further, above-mentioned first, second, third and fourth and five chute feed end and discharge end difference in height be less than 2.0m.

Further, in same longitudinal orientation, middle window is located at upper window and lower window for above-mentioned upper window and lower window Perpendicular bisector position on.

Further, said one main hopper, two distributing T-pipe slots, four shunting tumbling barrels and chute constitute a component layers Enter mould by window and pour component, is equipped with two groups along length of tunnel direction or three component layers enter mould by window and pour component, adjacent major ingredient Bucket by with pour the upper siphunculus connection that trolley connect.

Further, above-mentioned main hopper is rectangular opening shape cone bucket: 50 × 45cm of size suitable for reading, 47 × 23cm of bottom size, High 50cm；Distributing T-pipe slot is rectangular opening shape cone bucket: 40 × 25cm of size suitable for reading, bottom size 35 × 18cm, high 25cm；It shunts Tumbling barrel is that Upper rectangular mouth lower part is circular cone bucket: top 50 × 50cm of size suitable for reading, lower openings caliber 27cm, wall thickness 3mm, high 40cm；Chute is arc panel: its width 34cm, deep 10cm.

The present invention realizes that concrete delamination enters the casting craft of mould by window, it is characterised in that: the realization concrete delamination Entering mould to pour mechanism by window includes tunnel and the template for being located at tunnel inner wall face, along length of tunnel direction and longitudinal direction in the template It is used to be passed through the windowing of concrete material equipped with several, the windowing includes upper window, middle window and lower window, the tunnel Main hopper, two distributing T-pipe slots, four shunting tumbling barrels and chute are successively arranged in certain length from top to bottom, in the same of tunnel Distributing T-pipe slot position is in two downsides of main hopper in one vertical face, and distributing T-pipe slot is connect with main hopper by the first chute, in tunnel Two downsides that tumbling barrel is located at diversion channel are shunted in the facade in road, are shunted tumbling barrel and are connect with diversion channel by the second chute, are led to upper The chute of window is third chute, and lower end that third chute connect with the second chute connects, and the chute towards middle window is the Four chutes, the 4th chute are connected with the bypass pipe for shunting tumbling barrel is connect；Chute towards lower window is the 5th chute, the 5th chute It is connected with the lower through-tube for shunting tumbling barrel is connect；When construction, concrete is pumped into main hopper by delivery pump pump line, by distributing T-pipe Slot, shunting tumbling barrel and each chute are guided to each corresponding operation window, and it is symmetrical to realize that concrete enters mould layering by window from the bottom to top It pours.

Further, when above-mentioned casting concrete, concrete maximum height of drop is no more than 2m, trolley front and back concrete Height difference forbids unilateral one-time-concreting 1m or more no more than 0.5m no more than 0.6m, left and right concrete height.

Further, in casting process, it should be noted that the case where observing template, reinforcing bar, when discovery has deformation, displacement, Should take reinforcement measure in time, when in construction such as discovery pumping concrete slump deficiency, self-watering must not be arrogated to oneself, when triple window layering by After the completion of window pours, trolley delivery pump connecting leg to vault carries out concrete and rushes to summit operation.

Further, concreting should be carried out continuously, and concrete is made firm by ramming closely knit using artificial and attached vibrator；When For some reason when interval, the time that the intermittent time should be less than the presetting period of bottom concrete or can remold, when more than permission interval When the time, by treatment of construction joints, lining cutting concrete seam crossing must carry out dabbing processing.

Further, the secondary lining concrete strength applied after Support Deformation is basicly stable in the early stage reaches 8MPa or more Demoulding；100% side that the unstable secondary lining concrete strength applied in advance of preliminary bracing should reach design strength can demould； When demoulding, the temperature difference between inside concrete and surface layer, surface layer and environment is not greater than 20 DEG C, and the outer surface temperature difference is not in structure It obtains and is greater than 15 DEG C；Inside concrete must not demoulding before starting cooling；After secondary lining demoulding, spray maintenance is carried out, curing time: To the concrete using portland cement, ordinary portland cement mixing, 7d must not be less than；To Mixed With Admixture or have impervious etc. It is required that concrete, 14d must not be less than.

The present invention realize concrete delamination by window enter mechanism structure that mould pours is simple, design rationally, be conducive to improve tunnel Road pouring construction efficiency.

Detailed description of the invention:

Fig. 1 is that two component layers of the invention by window enter the organigram that mould pours component；

Fig. 2 is organigram of the invention；

Fig. 3 is the expanded view along tunnel direction certain length template；

Fig. 4 is the organigram that distributing T-pipe slot is connect with shunting tumbling barrel.

Specific embodiment:

It includes tunnel 1 and the template 2 for being located at tunnel inner wall face, institute that the present invention, which realizes that concrete delamination enters the mechanism that mould pours by window, It states along length of tunnel direction and longitudinal windowing 3 for being used to be passed through concrete material equipped with several in template 2, the windowing includes upper Window 301, middle window 302 and lower window 303 are successively arranged main hopper 4, two in the certain length in the tunnel from top to bottom 5, four shunting tumbling barrels 6 of distributing T-pipe slot and chute 7, the interior distributing T-pipe of same vertical face (plane as where Fig. 2) in tunnel Slot 5 is located at two downsides of main hopper 4, and distributing T-pipe slot 5 is connect with main hopper 5 by the first chute 701, the facade in tunnel Two downsides that tumbling barrel 6 is located at diversion channel 5 are shunted in (plane as where Fig. 4), are shunted tumbling barrel 6 and are slipped with diversion channel 5 by second Slot 702 connects, and the chute towards upper window 301 is third chute 703, the lower end that third chute 703 is connect with the second chute 702 Portion's connection, the chute towards middle window 302 are the 4th chute 704, and the 4th chute 704 shunts the bypass pipe 601 of tumbling barrel 6 with connecting Connection；Chute towards lower window is the 5th chute 705, and the 5th chute 705 is connected with the lower through-tube 602 for shunting tumbling barrel 6 is connect.

One of embodiment, in order to which feeding is reliable and stable, above-mentioned first, second, third and fourth and five chute feed end with go out Expect that the difference in height at end is less than 2.0m.

One of embodiment, as shown in figure 3, good in order to make to pour effect, above-mentioned upper window 301 exists with lower window 303 In same longitudinal direction orientation, middle window 302 is located on the perpendicular bisector position of upper window and lower window.

Further, it in order to design rationally, said one main hopper, two distributing T-pipe slots, four shunting tumbling barrels and slips Slot one component layers of composition enter mould by window and pour component A, are equipped with two groups along length of tunnel direction or three component layers enter mould by window and pour Component, adjacent main hopper by with pour the upper siphunculus 8 that trolley connect and connect.

Further, in order to design rationally, above-mentioned main hopper 4 is rectangular opening shape cone bucket: 50 × 45cm of size suitable for reading, lower mouth Size 47 × 23cm, high 50cm；Distributing T-pipe slot 5 be rectangular opening shape cone bucket: 40 × 25cm of size suitable for reading, bottom size 35 × 18cm, high 25cm；It is circular cone bucket that shunting tumbling barrel 6, which is Upper rectangular mouth lower part: top 50 × 50cm of size suitable for reading, lower part is opened Mouth caliber 27cm, wall thickness 3mm, high 40cm；Chute is arc panel: its width 34cm, deep 10cm.

Fig. 3 is the expanded view along tunnel direction certain length template, and arrow direction is length of tunnel direction, wherein 201 are Top template, the construction scope not poured in the application, 202 be the mould for offering window 301, middle window 302 and lower window 303 Plate is also to have windowing on 201, is to be poured with other mode, does not illustrate here.

The present invention realizes that concrete delamination enters the casting craft of mould by window, and the realization concrete delamination enters mould by window and pours Mechanism includes tunnel and the template for being located at tunnel inner wall face, is equipped with several along length of tunnel direction and longitudinal direction in the template and uses In the windowing for being passed through concrete material, the windowing includes upper window, middle window and lower window, and the certain length in the tunnel is interior certainly It is successively arranged main hopper, two distributing T-pipe slots, four shunting tumbling barrels and chute under above, the threeway in the same vertical face in tunnel Diversion channel is located at two downsides of main hopper, and distributing T-pipe slot is connect by the first chute with main hopper, divided in the facade in tunnel Stream tumbling barrel is located at two downsides of diversion channel, shunts tumbling barrel and is connect with diversion channel by the second chute, the chute towards upper window is Third chute, the lower end connection that third chute is connect with the second chute, the chute towards middle window is the 4th chute, and the 4th slips Slot is connected with the bypass pipe for shunting tumbling barrel is connect；Chute towards lower window is the 5th chute, and the 5th chute is gone here and there with shunting is connect The lower through-tube connection of cylinder；When construction, concrete is pumped into main hopper by delivery pump pump line, by distributing T-pipe slot, shunts tumbling barrel It is guided to each corresponding operation window with each chute, realizes that concrete enters mould layering by window from the bottom to top and symmetrically pours.

The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with Modification, is all covered by the present invention.

Claims

1. a mechanism that realizes concrete layer-by-window pouring into mould, it is characterized in that: comprise tunnel and the formwork that is arranged on the inner wall of tunnel, described formwork is provided with several along the tunnel length direction and longitudinal direction for feeding concrete The opening of the material, the opening includes an upper window, a middle window and a lower window, and a main hopper, two three-way distribution troughs, four distribution cylinders and a chute are arranged in sequence from top to bottom within a certain length of the tunnel. , in the same longitudinal plane of the tunnel, the three-way distribution trough is located on the two lower sides of the main hopper, the three-way distribution trough is connected with the main hopper through the first chute, and the shunt cylinders are located on the two lower sides of the distribution tank in the vertical surface of the tunnel. The shunt string and the shunt are connected through the second chute, the chute leading to the upper window is the third chute, the third chute is connected to the lower end of the second chute, the chute leading to the middle window is the fourth chute, the fourth chute It is connected with the bypass pipe connecting the shunt serial cylinder; the chute leading to the lower window is the fifth chute, and the fifth chute is connected with the down pipe connecting the shunt serial cylinder.

2. The mechanism for realizing layer-by-window pouring of concrete layer by window according to claim 1, wherein the height difference between the feeding end and the discharging end of the first, second, third, fourth and fifth chutes is less than 2.0m.

3. The mechanism for realizing layer-by-window pouring of concrete layer by window according to claim 1, characterized in that: the upper window and the lower window are in the same longitudinal orientation, and the middle window is located on the mid-perpendicular line of the upper window and the lower window position.

4. The mechanism for realizing layer-by-window pouring of concrete layer-by-window according to claim 1, characterized in that: the one main hopper, two three-way distribution troughs, four distribution cylinders and chute constitute a set of layers For the window-by-window casting components, there are two or three groups of layer-by-window casting components along the length of the tunnel, and the adjacent main hoppers are connected by an upper pipe connected to the casting trolley.

5. The mechanism for realizing layer-by-window pouring of concrete layer by window according to claim 1, characterized in that: the main hopper is a rectangular mouth-shaped cone: the upper mouth size is 50×45cm, and the lower mouth size is 47×23cm, The height is 50cm; the three-way shunt is a rectangular mouth-shaped cone: the size of the upper port is 40×25cm, the size of the lower port is 35×18cm, and the height is 25cm. 50×50cm, the lower opening diameter is 27cm, the wall thickness is 3mm, and the height is 40cm; the chute is a curved plate: its width is 34cm and its depth is 10cm.

6. A pouring technique for realizing layer-by-window moulding of concrete, characterized in that: the mechanism for realizing layer-by-window moulding of concrete comprises a tunnel and a template arranged on the inner wall of the tunnel, and the template is along the length of the tunnel. There are several windows for passing concrete in the direction and longitudinal direction. The windows include an upper window, a middle window and a lower window. Within a certain length of the tunnel, there are a main hopper, two The three-way shunt, four shunt cylinders and the chute are located on the two lower sides of the main hopper in the same longitudinal plane of the tunnel. The inner shunt barrel is located on the two lower sides of the shunt tank, the shunt string and the shunt tank are connected through the second chute, the chute leading to the upper window is the third chute, the third chute is connected with the lower end of the second chute, leading to the The chute in the middle window is the fourth chute, and the fourth chute is connected with the bypass pipe connecting the shunt string; the chute leading to the lower window is the fifth chute, and the fifth chute is connected with the down pipe connecting the shunt string; during construction , Concrete is pumped into the main hopper through the pump pipe of the conveying pump, and is diverted to the corresponding working windows through the three-way shunt, the shunt and the chutes, and the concrete is poured into the mold layer by layer and symmetrically from the bottom to the top.

7. the pouring technique that realizes layer-by-window moulding of concrete according to claim 6, is characterized in that: when concrete is poured, the maximum drop height of concrete cannot exceed 2m, and the height difference of concrete before and after the trolley cannot exceed 0.6m, The height of the left and right concrete cannot exceed 0.5m, and it is strictly forbidden to pour more than 1m at a time on one side.

8. The pouring technique for realizing the layer-by-window moulding of concrete according to claim 6, is characterized in that: in the pouring process, attention should be paid to the observation of the conditions of the formwork and the steel bars, and when deformation and displacement are found, it should be timely Reinforcement measures shall be taken. If it is found that the slump of the pumped concrete is insufficient during the construction, water shall not be added without authorization.

9. the pouring technique that realizes concrete layer-by-window moulding according to claim 6, is characterized in that: concrete pouring should be carried out continuously, and concrete adopts artificial and attached vibrator to tamping and compact; The interval time should be less than the initial setting time of the bottom concrete or the time it can be reshaped. When the allowable interval time is exceeded, it should be treated as a construction joint, and the lining concrete joint must be chiseled.

10. The pouring process for realizing concrete layer-by-window moulding according to claim 6, characterized in that: the secondary lining concrete strength applied after the initial support deformation is basically stable reaches more than 8MPa and demoulding; the initial support The strength of the secondary lining concrete that is not stabilized and applied in advance should reach 100% of the design strength before demoulding; when demoulding, the temperature difference between the inside of the concrete and the surface, the surface and the environment should not be greater than 20 °C, and the temperature difference between the inner and outer surfaces of the structure should not be greater than 20°C. The temperature is higher than 15℃; the formwork shall not be removed before the concrete starts to cool down; after the secondary lining is demolded, spray curing shall be carried out. For concrete mixed with admixtures or with impermeability and other requirements, it shall not be less than 14d.