CN105625178A

CN105625178A - Y-shaped pier column construction process

Info

Publication number: CN105625178A
Application number: CN201410584959.4A
Authority: CN
Inventors: 董伟
Original assignee: China Railway 14th Bureau Group Co Ltd
Current assignee: China Railway 14th Bureau Group Co Ltd
Priority date: 2014-10-28
Filing date: 2014-10-28
Publication date: 2016-06-01

Abstract

The invention provides a Y-shaped pier column construction process. According to the structural condition and the standard requirement, tumbling barrels are arranged; the tumbling barrels are placed in advance in the reinforcing steel bar binding process and then reinforcing steel bar binding is carried out; due to the fact that reinforcing steel bars are criss-cross in a # shape, in the binding process, technicians give the priority to inspection of the interval accuracy of the reinforcing steel bars, and offline inspection is carried out when it is necessary so as to guarantee the vertical through condition; and according to the structural size and the vibrating radius of vibrating rods, the technicians distribute vibrating points, insertion tests are conducted on vibrating holes in advance, and if the vibrating rods are stuck, the reinforcing steel bars are adjusted according to the standard requirement, so that a smooth channel is guaranteed. The Y-shaped pier column construction process has the beneficial effects that 50 kilograms of cement is saved for each square, a construction period is shortened, time cost is saved, and inherent quality of a solid structure is guaranteed; the appearance quality is remarkably improved; and a viaduct double-column type Y-shaped pier is solid inside and attractive outside, the solid strength meets the design requirement after the pier is detected by various organizations, no honeycombs, pitted surfaces or cracks exist, bar leakage is completely eradicated, and the process is accepted by various parties.

Description

Y type pier stud construction technology

Technical field

The present invention relates to a kind of pier stud construction technology, specifically Y type pier stud construction technology.

Background technology

Overpass except 1# pier stud, all the other posts high at more than 3m, 7#, 8#, 9#, 12#, 13#, 14# pier stud in 7m level above, and require that pier stud is with binder one-time-concreting molding; Pier shaft reinforcing bar is intensive, and bar diameter is big, and stirrup is crisscross, and in groined type, reinforcing bar clear spacing is little, and concrete vibrates difficulty, deals with improperly and can produce honeycomb, leak.

Summary of the invention

For solving the problems referred to above, it is an object of the invention to provide a kind of Y type pier stud construction technology.

The present invention is for achieving the above object, it is achieved through the following technical solutions: Y type pier stud construction technology, according to structure situation, code requirement, tumbling barrel is set, when reinforcing bar binding, tumbling barrel is placed in advance, then reinforcing bar binding is being carried out, invar muscle is crisscross, in groined type, in process of binding, technical staff focuses on the examination of bar spacing precision, and go offline inspection if desired; To ensure up/down perforation; Vibrating radins according to physical dimension and vibrating spear, technical staff carries out vibrating layouting, and to vibrating, examination is inserted in hole in advance, as blocked vibrating spear, reinforcing bar is pressed code requirement adjustment, to ensure channels open.

For realizing the purpose of the present invention further, can also be by the following technical solutions: testing crew is according to the performance of blender, in conjunction with previous experiences and code requirement, determine mixing time, during stirring, often dish must estimate mixture situation, concrete mixture carries out workability detection before dispatching from the factory, before concrete placings, testing crew carries out workability detection equally, time undesirable, return mixing station and processes. When building pier stud, though workability is controlled effectively, because pier stud is high, sandstone segregation phenomenon is unavoidably there is in concrete mixture after beating to pier stud, in order to ensure that portion occurs without " rotten ", honeycomb, first building the same label mortar of about 10cm, when building, layer and section is constructed, every layer controls at about 30cm, join 2 workmans for every section, at 2m and following, template is knocked, cavity is determined whether with sound, vibrate again in the position that shakes of leakage, if desired can tapping template, but dynamics wants light. According to weather condition, form removal after building 12 hours, note the template collision to entity during form removal, carry out maintenance after form removable immediately, it is contemplated that the construction features of Y type pier stud, therefore adopt covered rearing with plastic film maintenance, curing time is 14 days.

It is an advantage of the current invention that: in the present invention, every side saves cement 50 kilograms, shortens construction period, has saved time cost, and entity structure inherent quality is guaranteed. Presentation quality is obviously improved. In overpass queen post Y type, real outer U.S., detects solid strength through each mechanism and meets designing requirement, without honeycomb, pitted skin, crackle, stopped leakage muscle, obtains each side certainly.

Accompanying drawing explanation

Fig. 1 is one of present configuration schematic diagram; Fig. 2 is the two of present configuration schematic diagram.

Detailed description of the invention

Y type pier stud construction technology, according to structure situation, code requirement, arranges tumbling barrel, is placed in advance by tumbling barrel when reinforcing bar binding, then carrying out reinforcing bar binding, invar muscle is crisscross, in groined type, in process of binding, technical staff focuses on the examination of bar spacing precision, and go offline inspection if desired; To ensure up/down perforation; Vibrating radins according to physical dimension and vibrating spear, technical staff carries out vibrating layouting, and to vibrating, examination is inserted in hole in advance, as blocked vibrating spear, reinforcing bar is pressed code requirement adjustment, to ensure channels open.

Testing crew is according to the performance of blender, in conjunction with previous experiences and code requirement, determine mixing time, during stirring, often dish must estimate mixture situation, concrete mixture carries out workability detection before dispatching from the factory, before concrete placings, testing crew carries out workability detection equally, time undesirable, return mixing station and process.

When building pier stud, though workability is controlled effectively, because pier stud is high, sandstone segregation phenomenon is unavoidably there is in concrete mixture after beating to pier stud, in order to ensure that portion occurs without " rotten ", honeycomb, first building the same label mortar of about 10cm, when building, layer and section is constructed, every layer controls at about 30cm, join 2 workmans for every section, at 2m and following, template is knocked, cavity is determined whether with sound, vibrate again in the position that shakes of leakage, if desired can tapping template, but dynamics wants light.

According to weather condition, form removal after building 12 hours, note the template collision to entity during form removal, carry out maintenance after form removable immediately, it is contemplated that the construction features of Y type pier stud, therefore adopt covered rearing with plastic film maintenance, curing time is 14 days.

Construction control

1. the adjustment of match ratio and optimization

According to construction features, build mode, have two kinds of methods available for match ratio: one adopts self-compacting concrete or high throwing to exempt from the concrete that shakes; Existing mix-proportion adjustment is optimized by the two. In line with the principle of " economical rationality ", namely starting existing match ratio is optimized the bimester that project management department's testing crew shifting to an earlier date, concrete condition is as follows:

1.1 according to distance of reinforcing bar, in conjunction with current material, selects 5mm-26.5mm rubble;

1.2 according to pier stud height, slump-loss amount, vibrating has dead angle, and the slump determines 140mm-180mm;

1.3 according to the local situation that entity detection is focused on resilience in Wuxi, and sand coarse aggregate ratio determines 36%-38%;

1.4 according to practical experience, and water consumption is low, suitably increases additional dosage;

1.5 according to design strength, life requirement, it is determined that cement consumption scope;

According to conditions above, testing crew repetition test, in conjunction with the bounce situations of concrete sample, it is proposed that the theoretical match ratio of pier stud construction targetedly;

2. the setting of passage during reinforcing bar binding

According to structure situation, code requirement, tumbling barrel is set, when reinforcing bar binding, tumbling barrel is placed in advance, then carrying out reinforcing bar binding, invar muscle is crisscross, in groined type, in process of binding, technical staff focuses on the examination of bar spacing precision, and go offline inspection if desired. To ensure up/down perforation. Vibrating radins according to physical dimension and vibrating spear, technical staff carries out vibrating layouting, and to vibrating, examination is inserted in hole in advance, as blocked vibrating spear, reinforcing bar is pressed code requirement adjustment, to ensure channels open.

3. the control of concrete workability

4. the building of concrete

5. the maintenance of concrete

Advantage

Every side saves cement 50 kilograms, shortens construction period, has saved time cost, and entity structure inherent quality is guaranteed. Presentation quality is obviously improved.

Technical scheme is not restricted in the scope of embodiment of the present invention. The technology contents of the not detailed description of the present invention is known technology.

Claims

1.Y type pier stud construction technology, it is characterized in that: according to structure situation, code requirement, tumbling barrel is set, being placed in advance by tumbling barrel when reinforcing bar binding, then carrying out reinforcing bar binding, invar muscle is crisscross, in groined type, in process of binding, technical staff focuses on the examination of bar spacing precision, and go offline inspection if desired; To ensure up/down perforation; Vibrating radins according to physical dimension and vibrating spear, technical staff carries out vibrating layouting, and to vibrating, examination is inserted in hole in advance, as blocked vibrating spear, reinforcing bar is pressed code requirement adjustment, to ensure channels open.

2. Y type pier stud construction technology according to claim 1, it is characterized in that: testing crew is according to the performance of blender, in conjunction with previous experiences and code requirement, determine mixing time, during stirring, often dish must estimate mixture situation, concrete mixture carries out workability detection before dispatching from the factory, before concrete placings, testing crew carries out workability detection equally, time undesirable, return mixing station and processes.

3. Y type pier stud construction technology according to claim 1, it is characterized in that: when building pier stud, though workability is controlled effectively, because pier stud is high, sandstone segregation phenomenon is unavoidably there is in concrete mixture after beating to pier stud, in order to ensure that portion occurs without " rotten ", honeycomb, first build the same label mortar of about 10cm, when building, layer and section is constructed, every layer controls at about 30cm, join 2 workmans for every section, at 2m and following, template is knocked, cavity is determined whether with sound, vibrate again in the position that leakage is shaken, if desired can tapping template, but dynamics wants light.

4. Y type pier stud construction technology according to claim 3, it is characterized in that: according to weather condition, form removal after building 12 hours, the template collision to entity is noted during form removal, maintenance is carried out immediately after form removable, considering the construction features of Y type pier stud, therefore adopt covered rearing with plastic film maintenance, curing time is 14 days.