Construction process of post tensioned prestressed hollow beam and slab

Construction method of post tensioned prestressed beam and slab prefabrication

This material is the construction method of post tensioned prestressed beam and slab prefabrication, which is detailed and can be downloaded for reference.

Construction of post tensioned prestressed concrete hollow slab beam

Content introduction ① Construction of prefabrication yard: the prefabrication yard shall be planned first. The foundation of the slab beam base shall be treated and the surface shall be leveled and smooth with concrete, and steel plates shall be laid. The beam end base shall be strengthened. The gantry crane for hoisting shall be assembled with Bailey pieces. ② Formwork processing: the external formwork used for the plate beam of this bridge uses the assembled steel formwork processed and produced by professional formwork factory, and the panel adopts

Construction process flow chart of post tensioned prestressed hollow slab beam

Construction process flow chart of post tensioned prestressed hollow slab beam

Prefabrication construction of pretensioned prestressed hollow slab

The superstructures of No. 1 and No. 3 bridges of a certain avenue are pretensioned prestressed hollow slabs. In order to complete the hollow slab construction task on schedule with quality and quantity guaranteed, we plan as follows: the first bridge of a certain avenue is prefabricated from north to south, and the third bridge is prefabricated from south to north, and the side slab and middle slab are poured together. The construction process of beam and slab is as follows: 1. Tensioning: first, apply mold release oil on the bottom formwork, and then

Construction method of pretensioned prestressed beam and slab

Combined with the actual construction, this paper analyzes the construction preparation, tensioning, tension and other aspects of pretensioned prestressed beam and slab. The so-called prestressed concrete structure is to artificially introduce the internal stress into the concrete or reinforced concrete in advance, and its value and distribution can just offset the stress generated by the service load to an appropriate degree. Apply prestress to prestressed concrete structure

Construction summary of pretensioned prestressed hollow slab beam

This data is a summary of the construction of pretensioned prestressed hollow slab beams. There are 366 hollow slab beams in this section, including 80 16m hollow slabs and 286 20m hollow slabs. It is planned to complete the prefabrication of pretensioned hollow slabs in 120 days. The content is detailed and worth downloading.

Construction Process Flow Diagram of Post tensioned Prestressed Hollow Slab Girder.doc

Construction of precast pretensioned prestressed concrete hollow slab beam

Content introduction According to the quantity and schedule of pretensioned prestressed concrete hollow slabs in this bid section, it is planned to set up a 5-slot long line tensioning pedestal, and each slot can prefabricate 3 pieces of hollow slab beams at the same time. When the prestress is applied, the initial stress is tensioned individually, and then the overall tension is applied. In order to speed up the progress, the concrete is mixed with high-efficiency water reducer, and steam curing is used in low temperature season to improve the early strength of concrete. External formwork

Pre stressed (post tensioned) beam and slab construction quality record form

This document is a record of the construction quality of prestressed (post tensioning) beams and slabs. The contents are complete and can be downloaded

Construction organization design of pretensioned prestressed hollow slab bridge

XX Bridge Project is located in XX Dantu New Area. The proposed new bridge has a single span of 20m and a clear deck width of 8m. The substructure adopts bored pile ￠ 1000, and each abutment is provided with 3 piles until the bottom of abutment cap beam. The upper structure adopts pretensioned prestressed hollow slab, and the slab beam is 0.85m high; Neoprene bearing 180 × 180 × 49 is adopted at the abutment.

Construction scheme of pretensioned prestressed hollow slab bridge

This bridge is located in Jimo City, with the central chainage of K1+905. The bridge is a 6-span 20m separated interchange, with a total length of 120m. The main line crosses a river, with an intersection angle of 60 °. This bridge is located in the right deflection curve, with a curve radius of 3387.938 and a left superelevation of 2%.

Construction scheme of pretensioned prestressed hollow slab

The main line adopts the standard of two-way four lane expressway, the subgrade width is 28m, and the design speed is 120km/h; The design vehicle load of bridge and culvert is highway - Class I; The design flood frequency of super large bridges is 1/300, and that of large, medium and small bridges, culverts and subgrade is 1/100. 34 structures with prestressed hollow slab beams are designed, including 10m slabs

74. Construction process flow chart of post tensioned prestressed hollow slab beam

Construction of precast prestressed hollow slab beam

Content introduction II. Main construction method I) Construction preparation 1. Materials shall be delivered to the site in batches according to the construction schedule, including cement, sand, stone, reinforcement, steel strand, corrugated pipe and rubber pipe. Samples shall be sent for inspection according to the requirements of the specification. They can be used only after they are qualified. Various materials shall be stacked separately and waterproof measures shall be taken. Design and manufacture according to the specific conditions of beam and site

Construction of post tensioned prestressed concrete beam

Content introduction. Steel bar production and installation ① Technical requirements for raw materials a The steel bar should have the quality certificate of the original manufacturer. After being transported to the site, sampling inspection should be carried out according to the specification requirements. The plain round steel bar should comply with the provisions of GB13013-91, the ribbed steel bar should comply with the provisions of GB1499-98, and the prestressed steel strand should comply with the requirements of ASTMA416-92

Prestressed post tensioning construction

Prestressed reinforcement: the type, specification and diameter of heat-treated reinforcement, steel wire and steel strand used for prestress must comply with the design requirements and national standards, and the factory quality certificate and repeated test report shall be provided

Post tensioned prestressed beam construction.doc

Construction process block diagram of pretensioned prestressed hollow slab beam

Construction process block diagram of pretensioned prestressed hollow slab beam Construction process block diagram of pretensioned prestressed hollow slab beam Construction process block diagram of pretensioned prestressed hollow slab beam

Discussion on the prefabrication construction technology of post tensioned prestressed hollow slab beam

[Abstract] Combined with work experience and according to the characteristics of post tensioned prestressed hollow slab beams, the paper introduces the construction process essentials such as site preparation, membrane fabrication, formwork fabrication and installation, reinforcement and steel strand processing, concrete pouring, curing, formwork removal, steel strand tensioning, grouting and end sealing, so as to promote the application of post tensioned prestressed hollow slab beams.

Construction technical measures of pretensioned prestressed hollow slab beam

The tensioning of prestressed reinforcement (steel strand) is the key to the quality of precast beam and slab. Therefore, the steel strand construction is an important link in the beam and slab prefabrication construction

Design and construction of long line pedestal of pretensioned prestressed hollow slab beam

Combined with the design and construction example of the long trunking pedestal of pretensioned prestressed hollow slab beam in the LJ-11 bid section of Baoding Fuping (Hebei Shanxi border) Expressway, this paper expounds the design structure of the long trunking pedestal, and uses the knowledge of structural mechanics to check the stability, strength and tensioning steel beam of the pedestal.

Prefabrication construction of reinforced prestressed pretensioned concrete hollow slab beam

Content introduction 1 Construction method 1) According to the needs of prefabrication, level the site, improve the drainage system, and plan the supply of concrete and the layout and installation of water and electricity pipelines as a whole. 2) The length, quantity and size of the precast pedestal shall be determined according to the size, quantity and duration of the beam. The pedestal shall be firm, flat, free from subsidence, and the surface shall be polished. 3) The bearing pedestal is made of concrete and shall

Construction method of 28m post tensioned prestressed hollow slab beam

The ship lock bridge reconstruction project of the widening project of the West Outer Ring Road in Nantong City uses 25 m+28 m+25 m prestressed slabs. 28 m is the precedent of similar slabs in Jiangsu Province. In order to ensure the quality and speed of the project, practical simple and fast construction methods have been explored in the construction, which not only ensure the quality of the project but also ensure the speed of the project. 2. Construction process Plate beam construction process: site leveling, paving

Record of construction quality of prestressed (pretensioned) beam and slab

This document is a record of the construction quality of prestressed (pretensioned) beams and slabs. The contents are complete and can be downloaded

Construction process block diagram of pretensioned prestressed hollow slab beam

Block Diagram of Construction Process of Pre tensioned Prestressed Hollow Slab Beam Block Diagram of Construction Process of Pre tensioned Prestressed Hollow Slab Beam

Detailed document of construction process flow chart of post tensioned prestressed hollow slab beam in an area

This document is a detailed document of the construction process flow chart of a post tensioned prestressed hollow slab beam in a certain area. The content of the document includes: sample description of project documents, calculation tables, detailed description and other forms. The document meets the standards, is reliable, rich in content, and has detailed ideas, which can be used for reference.

Key points of post tensioning prestress construction control

Abstract: The post tensioning construction technology of prestressed concrete box girder is summarized, and the problems encountered in the construction process are analyzed. Key words: post tensioning method, elongation, corrugated pipe, steel strand.

Construction of prestressed pretensioned hollow slab beam

Songjiu Road Separated Flyover is one of the important projects of Wanglou (provincial boundary) - Lankao Expressway, and the upper part of it adopts 3 × 16m prestressed pretensioned hollow slab beam. This paper introduces the construction process and technology of prestressed pretensioned hollow slab beam of the bridge.

Discussion on Construction Control of Post tensioned Prestress

Hengkeng Bridge is located about 150m downstream of Hengkeng Ferry in Doumen District, Zhuhai City. The whole bridge span is arranged as 20 × 25+86+160+86+20 × 25=1332m, of which the main bridge is 86+160+86=332m three span prestressed concrete continuous rigid frame, and the approach bridges are 25m prestressed concrete T-beams. The road grade is level II highway with plain and hills

Analysis of problems in post tensioned prestressed construction

Analysis of various problems in post tensioned prestressed construction

Construction of post tensioned prestressed concrete crane beam（

*****The * * * workshop project of Tire Co., Ltd. adopts 6m post tensioned prestressed concrete crane beam, which adopts atlas 04G426 (implementation date: March 1, 2004). The project requires a total of YDL-3:30, YDL-4:30 and YDL-7:60, and the post tensioned bonded prestressed construction technology is adopted,

Construction copy of 20m prestressed hollow slab beam

This project is located in xx Town, xx City, and belongs to the key project of xx Province - xxxxxx Ecological Leisure Project. It is one of the main channels for the external traffic of xx Ecological Leisure Zone. The starting point is located in Xiaxi District, Xiawu Village, which connects Xiang'an South Road. The route runs from west to east, parallel to provincial highway 201, runs through xx Village, xx Village, xx Village, and ends at xx Village, which connects with Nangang Road,

Construction technology of a prestressed post tensioning method

This process standard is applicable to the post tensioning hydraulic tensioning construction of prestressed concrete in general industrial and civil buildings (excluding the fabrication of components and blocks).

Pre tensioned prestressed hollow slab prefabrication

Content introduction 1. According to the needs of prefabrication, level the site, improve the drainage system, and plan the supply of concrete and the layout and installation of water and electricity pipelines as a whole. 2. The length, quantity and size of the prefabricated pedestal shall be determined according to the size, quantity and construction period of the beam. The pedestal shall be firm, flat, free from subsidence and surface abrasion. 3. The bearing pedestal shall be made of concrete and shall have sufficient strength, rigidity and stability,

Post tensioned prestressed beam construction method

The superstructure of the bridge works in this contract section is a post tensioned prestressed box girder with a length of 30m and 20m. In order to ensure the construction quality, it is proposed to set up a box girder prefabrication yard on the subgrade of each bridge head. The prefabrication yard is used for prefabrication. See the general construction layout (Table 4) for the location of the prefabrication yard. The prefabrication yard shall be hardened with concrete, and the concrete pedestal shall be built at the same time. The box girder shall be prefabricated on the pedestal. Gantry crane is set in the prefabrication yard

Construction technology of prestressed hollow slab beam

Through the construction and practice of pretensioned prestressed hollow slab beam, this paper describes the construction operation procedures of hollow slab beam, such as the setting of tensioning pedestal, the calculation of tensioning value and construction technology of prestressed reinforcement, concrete pouring, the extraction of internal capsules, the tensioning and maintenance of prestressed reinforcement. This paper includes: the setting of tensioning pedestal, the construction procedure of hollow slab, and examples.

Construction technology of post tensioned prestressed concrete

Abstract: The article mainly introduces the concept of post tensioned prestressed concrete, the construction process of post tensioned prestressed concrete small box girder, the precautions in construction and some requirements in the operating procedures. Key words: post tensioning method; Prestress; concrete; Construction technology; Tension

Prestressed beam and slab prefabrication construction scheme

Catalog I, Project Overview 1 II, Construction Scheme 1 (I), Prestressed Hollow Slab Beam Prefabrication Construction Technical Scheme 1 (II), Prestressed Concrete Small Box Girder Prefabrication Construction Technical Scheme 7 (III), Precast Beam, Hollow Slab Beam Detection and Measurement Items 10 III, Technical Force Allocation and Labor Organization Plan 12 IV, Material Supply and Quality Assurance

Construction scheme of prestressed hollow slab beam

There are 288 20m hollow slab beams, 168 16m hollow slab beams and 36 10m hollow slab beams in a section of an expressway. The main quantities are: 3709.8m3 C50 concrete, 78.844T Grade I reinforcement, 357.110T Grade II reinforcement, 126.377T φ j15.24 steel strand.

Prefabrication scheme of post tensioned prestressed hollow slab

1. The position of the steel strand duct shall meet the design requirements, the duct shall be smooth, and the anchor plate at the end shall be perpendicular to the duct center. Pre embedded metal bellows or rubber pipes can be used to pull the reserved holes. 2. Bellows are used to reserve holes, and the length of the bellows is determined by the gauge. The length of the holes and the exposed length are taken into account in the calculation. ① The bellows should be a whole piece. When joints are required