CN104963293B - Prefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method - Google Patents

Abstract

The invention provides a kind of prefabricated subsection beam lay-by support bellows slurry anchor Bar Anchorage method of putting more energy into, pre-buried bellows in the prefabricated process of beam sections, inserts anchor bar in bellows after the beam sections demoulding, the anchoring after-pouring that the is in the milk support of putting more energy into. The present invention is applied to Bar Anchorage method in bridge prefabrication engineering special construction, without changing original production technology and template, in continuous flow procedure, only need pre-buried bellows, when later stage is put more energy into support construction, technique is simple, use nothing to shrink high strength grout anchoring property reliable, under the prerequisite that ensures construction quality, accelerated to greatest extent construction speed.

Description

Prefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method

Technical field

The present invention relates to reinforced concrete prefabricated structure reinforcing bars anchorage technology field, relate in particular to a kind of prefabricated subsection beam lay-by support bellows slurry anchor Bar Anchorage method of putting more energy into.

Background technology

The application of precast concrete segment beam technology in science of bridge building is very extensive, and it is ripe that short-term and long collimation method prefabricated subsection beam process are also tending towards. The arm support structure of putting more energy into is chosen in the setting of beam sections lay-by, makes beam sections in Urban Bridge engineering, have the selection of more planning space and structural design. The support of putting more energy into roughly has 3 kinds of modes with the anchor connection of beam sections: embedded sleeve barrel is connected anchoring; Steel, mixed combination anchor and bar planting anchoring. But these anchorage styles cannot meet the continuous production of beam sections when element precast in the support of putting more energy into, at the bottom of the prefabricated construction feasibility of privileged sites, large to the loss of template, quality control difficulty is very big. Pre-buried oblique sleeve location difficulty and angle can not be adjusted; Steel, mixed combination anchor require high and interface anchoring difficulty to steel, welding and corrosion-resistant; After bar planting anchoring boring difficulty and reinforcing bar insert, the short time cannot adjust to the right place in colligation.

Summary of the invention

Object of the present invention is exactly a kind of method that bellows entoplasm anchor Bar Anchorage is provided for the construction of privileged sites in bridge prefabrication engineering. This technology has in the lay-by prefabricated anchoring of the support application of putting more energy into that constructing operation is simple, anchoring property reliable, can ensure the advantages such as prefabricated continuous production without repacking model.

Object of the present invention can realize by following scheme: a kind of prefabricated subsection beam lay-by is put more energy into and supportted bellows slurry anchor Bar Anchorage method, and its concrete technology step is as follows:

In step 1, beam sections reinforcing bar binding process, at every put more energy into the support pre-buried bellows in anchor bar position and grouting escape pipe. Bellows length should meet design anchorage length of steel bar, and bellows diameter should meet the space requirement of anchor bar slurry anchor, and pre-buried grouting escape pipe need support the use with bellows, and bellows utilizes network for location location, and shutoff is carried out at bellows two ends, prevents into slurry;

Step 2, beam sections bale handle, to putting more energy into after support construction area, cut web outside corrugated pipe orifice concrete, and clear up bellows inwall;

Step 3, the support anchor bar of putting more energy into penetrate in bellows, after arrival design attitude, shown in colligation drawing, put more energy into support stirrup and lay-by floorings reinforcing bar;

Step 4, the support and after the whole colligations of lay-by floorings reinforcing bar fixedly complete of putting more energy into, carry out shutoff by the bellows mouth of pipe that penetrates anchor bar, in shutoff process, pulp-inlet pipe is installed, and pulp-inlet pipe need be installed firmly seamless;

Step 5, press design mixture proportion stir grouting material, grouting material stir carry out in strict accordance with arrangement and method for construction, fluidity need meet design requirement;

Step 6, utilize pneumatic mortar machine to being in the milk in bellows, pneumatic mortar machine pressure is controlled in designing requirement, and slurry fills after pipeline and holds and press 10s, confirms pulp concentration and enters to starch concentration when consistent, seals pressurize;

Step 7, slurry reach put more energy into after design strength support and lay-by floorings formwork erection, build.

The beneficial effect that adopts technique scheme to produce is: the present invention is applied to Bar Anchorage method in bridge prefabrication engineering special construction, without changing original production technology and template, in continuous flow procedure, only need pre-buried bellows, when later stage is put more energy into support construction, technique is simple, use nothing to shrink high strength grout anchoring property reliable, under the prerequisite that ensures construction quality, accelerated to greatest extent construction speed.

Claims (1)

1.A kind ofPrefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method, and its concrete technology step is as follows:

In step 1, beam sections reinforcing bar binding process, at every put more energy into the support pre-buried bellows in anchor bar position and grouting escape pipe, bellows length should meet design anchorage length of steel bar, bellows diameter should meet the space requirement of anchor bar slurry anchor, pre-buried grouting escape pipe need support the use with bellows, bellows utilizes network for location location, and shutoff is carried out at bellows two ends, prevents into slurry;

Step 2, beam sections bale handle, to putting more energy into after support construction area, cut web outside corrugated pipe orifice concrete, and clear up bellows inwall;

Step 3, the support anchor bar of putting more energy into penetrate in bellows, after arrival design attitude, shown in colligation drawing, put more energy into support stirrup and lay-by floorings reinforcing bar;

Step 4, the support and after the whole colligations of lay-by floorings reinforcing bar fixedly complete of putting more energy into, carry out shutoff by the bellows mouth of pipe that penetrates anchor bar, in shutoff process, pulp-inlet pipe is installed, and pulp-inlet pipe need be installed firmly seamless;

Step 5, press design mixture proportion stir grouting material, grouting material stir carry out in strict accordance with arrangement and method for construction, fluidity need meet design requirement;

Step 6, utilize pneumatic mortar machine to being in the milk in bellows, pneumatic mortar machine pressure is controlled in designing requirement, and slurry fills after pipeline and holds and press 10s, confirms pulp concentration and enters to starch concentration when consistent, seals pressurize;

Step 7, slurry reach put more energy into after design strength support and lay-by floorings formwork erection, build.