Construction Technology of High-rise Building Structure

Peng Cheng 1, a, Xinfu Chen2,b

,Lang Wu3,c

1Jiangxi College of Applied Technology, Ganzhou,Jiangxi 341000, China 2Jiangxi Institute of Economic Administrators, Nanchang,Jiangxi 330088, China

3College of Civil Engineering, Nanchang Institute of Technology, Nanchang,Jiangxi 330044, China

a158482992@qq.com, b42872576@qq.com, cwulang19812005@126.com

Key words: high-rise buildings; construction technology; safety management

Abstract. The construction of high-rise building has a lot of features such as large capital

investments, narrow operation face and long construction period. This puts forward higher

requirements for technology. Characteristics of high-rise building construction, the construction

quality controlling and construction safety managements were analyzed in this paper.

With the rapid development of high-rise buildings, the construction engineering structure

becomes a variety, increasing scale and gradually towards the direction of building exterior

complication and difficulty in construction of large comprehensive development. Aiming at these

phenomena in this paper, the related high-rise building construction technology was analyzed and

explored.

High-rise Building Construction Characteristics

(1) High-rise building construction period is long, layer number of buildings, the work high

above the more, the construction difficulty is high, the big workload and complicated technology.

As a result, the vertical transport, high safety, fire prevention, communications, water, and the

processing of construction waste problems become one of the characteristics of the high-rise

building construction [1].

(2) In order to ensure the overall stability of high-rise building construction, needs to be buried

deep under the ground 5 m, a layer or two layers of building construction, in improving the

reliability of the foundation at the same time can be auxiliary equipment layer and the garage, etc.

(3) High-rise building construction period is generally long, the huge manpower, material

consumption, seasonal span construction is inevitable, the staff and the engineering quality put

forward higher requirements.

(4) High-rise building construction land tensions, surrounding environment is complex, in order

to ensure the normal conduct of engineering equipment, the proper use of the material, need to

arrange the site temporary facility engineering, as far as possible reduce the storage in the high-rise

building construction materials, equipment, make full use of the goods and prefabricated

components and semi-finished materials.

High-rise Building Construction Quality Control

(1) To control the construction scheme in the high-rise building. If the construction scheme is

not appropriate, will be prone to the safety of the foundation pit collapse accident. Once foundation

pit depth more than 5 m, it must please have rich experience and professional knowledge of the

expert group to carry on the deep foundation pit project demonstration, only through expert

argumentation support plan to continue to organize the construction[2].

Applied Mechanics and Materials Vols. 580-583 (2014) pp 2316-2319 Submitted: 2014-05-09© (2014) Trans Tech Publications, Switzerland Accepted: 2014-05-17doi:10.4028/www.scientific.net/AMM.580-583.2316 Online: 2014-07-04

All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of TransTech Publications, www.ttp.net. (ID: 161.139.39.211, Universiti Teknologi Malaysia UTM, Johor Bahru, Johor, Malaysia-18/09/15,08:50:23)

(2) The quality of the high-rise building need accurate measurement and elaborates

construction. The measurement is the most crucial parts of the high-rise building is the building axis,

elevation, verticality control, and the accuracy of the measurement data will directly affect the

quality of the whole building construction, must go through strict measurement for many times.

(3) High-rise buildings appear cracks in construction process; the corresponding control

measures must be taken. Construction in the high-rise building concrete amount is larger, the

intensity is high, the concrete crack needs to prevent in advance. For new pouring concrete, it is

necessary to control the component moisture curing, avoid surface moisture to evaporate quickly,

make the internal force is too large, lead to cracking. For water after concrete internal temperature

difference to control within the 20 ℃, avoid the ambassador from the internal cracking of concrete

temperature difference.

High-rise Building Construction Technology

3.1 Deep foundation construction technology

Deep foundation construction technology is the building structure, one of one of the most

important technology in the construction, and the construction technology is more complex, easy to

cause the construction of key parts of the accident. So in the construction should be very specific,

ensure construction safety.

(1) In details for the whole process of foundation construction engineering should limit

detection and analysis, and puts forward some corresponding solutions. To vigorously promote the

information construction, a lot of specific construction example can prove that, for the construction

quality and safety is a very effective and necessary protection methods and means is to analysis the

whole process of deep foundation construction and monitoring.

(2) About how to solve the problem of groundwater, to take reasonable method. According to

the different situations, such as: the state of groundwater, depth, and soil of different take different

approaches. More commonly used the method of lowering groundwater has deep well, Ming set

face, adopt the method of single stage and multistage or injection well point, so that it can

effectively prevent groundwater impact on infrastructure construction and the foundation pit. Also

need to be aware of is that when the groundwater is abundant, precipitation impeded relatively

difficult time should adopt the corresponding cutoff appropriate measures to form a water curtain.

(3) For foundation pit supporting structure, should according to the natural conditions and the

conditions of the equipment management. Such as environment, geology, hydrology, takes a

different approach. Inverse arch wall, soil nail wall, such as the underground continuous wall, pile,

etc., at the time of application should be combined with the basement of the relevant situation, try to

reduce the cost of investment. For the soil body around, want to further on the soil of the foundation

pit, should take deep mixing method, grouting, compaction, so that you can prevent the soil slope

instability caused by the collapse accident.

3.2 The transformation layer construction technology

Engineering structure construction when need to make some decorate, contrary to common

building stiffness is used in upper class need larger shear wall, and the lower stiffness to switch to

smaller frame column. Want to realize such the structure of the way, you need in the arrangement of

the transformation layer structure floors.

(1) Template support system construction. The main purpose of the high-rise building

conversion layers is used to convert the fluctuation of the load of high-rise building and balance. Its

construction is very complex and difficult. In order to ensure the construction of high-rise building

structure. Need to choose a suitable template support system, it can be a supporting system for the

Applied Mechanics and Materials Vols. 580-583 2317

load transfer method or one-time molding supporting system, can also be combined with casting

method supporting system, etc. Specific support system to choose or according to the scene of the

construction environment and construction characteristic to the appropriate configuration. In the

template configuration and support system design. First of all have to draw a diagram. To the

construction of relevant personnel of detailed interpretation of the template construction process,

support, disassembling and arrangement method, etc. In counting parts and template site, it is

forbidden to use inferior and does not conform to the provisions of the fittings and template,

fundamentally guarantee the mould and the quality of the material[3].

(2) Transformation layer of steel construction. In order to ensure the transformation layer

construction quality, in the construction of the transformation layer reinforced materials to make a

turn, accurate, this request must be careful about design idea, documents and relevant regulations.

Also, accurate arranged reinforcement in place the order. Transformation layer reinforced joint is

generally arranged in taper thread connections or cold pressing sleeve and flash butt welding, and to

solve the problem of the rotation of the elbow reinforcement, generally adopt the method of nipple.

Because transformation layer for the construction of the need to install a large amount of

reinforcement and big diameter, beam-column node. Steel bar colligation and in place of the

difficulty is bigger, so under the reinforced material must be conducted in strict accordance with the

order of the row of reinforcement, thus reduced the difficulty of the steel binding and in place, and

guarantee the construction quality of steel. In the reserve reinforced positioning control to ensure

that in the transformation layer section is greater than the reserve of steel reserve the accuracy of the

reinforcement. Ensure floor pay-off shear wall in the positioning line and control line, girder

projection line and control line are released. Ensure that all reserved inserted reinforcement layout

construction has carried out in strict accordance with the design standards. After final review on

measuring accurate, will provide fixed on the original steel reinforcement.

3.3 Concrete construction technology

(1) High-rise building construction concrete consumption is big, should try to use ready-mixed

concrete and pump concrete.

(2) Rainfall distribution on 10-12 in areas such as the high strength concrete is suitable for

high-rise building bottom column, but unfavorable use should be paid attention to in the

construction of high strength concrete, lest cause shrinkage.

(3) After concrete pouring should be timely maintenance, especially pay attention to not ignore

the concrete wall, column and other body parts vertical concrete. To choose water should be

developed according to the season and the engineering characteristics, steam, composite heat

storage, electric heating, curing methods, such as film and cover and other insulation materials.

(4) Standard layer of floor slab concrete structures of tall building, the strength level of the

beam are generally consistent, and the strength level of the plate and beam intensity lower than that

in column, and bottom-up gradually reduced, thus node intensity difference exists, is not conducive

to the construction operation, so effective measures should be taken to ensure the construction

quality.

(5) Post-cast strip shall be proposed by the design unit of pouring time and location, and

consult with the contractor; The early appropriate chooses of post-cast strip, compensating

shrinkage concrete pouring. Before pouring concrete, clean up the surface of post-cast strip, after

casting also covers maintenance should be carried out on the surface.

2318 Advances in Civil and Industrial Engineering IV

High-rise Building Construction Safety Management

Too much attention to the construction enterprises improve product quality, improve the

economic benefit, often ignored the security problems in site construction, for enterprise's quality

department should give full play to its functions, Ann is content with professional safety knowledge,

with administrative reward, laws and regulations as the means, comprehensively enhance the safety

awareness of construction personnel, constantly improve the self safety of construction personnel.

Must not blindly pursue the progress of the construction process, construction speed should be

safe as guarantee, construction before and want to do a good job of supervision and management in

the construction process, and to find potential safety hazard in time and exclusion, establish the safe

production responsibility system, perfect the security system.

Conclusion

High-rise building with the constant development of the socialist modernization has become the

important symbol of urbanization today, the structure of the high-rise building and high-rise

building construction process of an important component of the construction process, to people's

production and the work has a very important influence, so the construction technology of high-rise

building engineering construction structure becomes very meaningful.

Reference

[1] Zhang Aiqing. High-rise building construction technology[J]. Engineering construction and

design, 2009.

[2] Liu Jianxin. Introduction to the high-rise building structure construction [J]. Small and

medium-sized enterprise management and technology, 2009.

[3] Tian Chunming. Problems that should be paid attention to during construction of high-rise

building structure [J]. Science and technology of China,2010.

Applied Mechanics and Materials Vols. 580-583 2319

Advances in Civil and Industrial Engineering IV 10.4028/www.scientific.net/AMM.580-583 Construction Technology of High-Rise Building Structure 10.4028/www.scientific.net/AMM.580-583.2316