Technical disclosure of expressway subgrade construction

Safety technical disclosure of manual digging pile construction of a highway foundation

A horizontal movable safety cover plate is set at the orifice. When the soil bucket is lifted to a certain height from the ground, the movable cover plate is pushed to close the orifice. After the trolley is pushed to the cover plate to unload the soil, the cover plate is opened and the bucket is loaded to prevent the soil block and operators from falling into the hole to hurt people. Electric hoist shall be used to lift the bucket, and safety barriers shall be set around the pile hole.

Technical disclosure of waterproof layer construction of expressway subgrade works

1. Under the edge of the foundation apron, asphalt board or asphalt sand board shall be embedded, or clay can be used to fill and tamp, and 1:3 cement mortar shall be used to fill the edge of the water surface, with a depth of 15cm. 2. Above the edge of the foundation flap, the outer side of the joint is filled with asphalt soaked hemp bars, with a depth of 5 cm, and the inner side is filled with 1:3 cement mortar, with a depth of 15 cm. If there is a gap in the middle, it can be filled with clay and tamped.

Technical disclosure of subgrade filling construction in the survey and test section of Yuchu Expressway

Construction preparation, construction process, quality inspection and standards

Technical disclosure of expressway pavement shoulder construction

Shoulder construction Shoulder construction technical disclosure I Construction preparation (I) The raw material of shoulder concrete is the "Conch" produced by Anhui Conch Co., Ltd

Simple Analysis of Highway Subgrade Construction Technology

Abstract: Highway subgrade construction is the key to the whole highway construction project. A slight deviation will lay a quality hazard for the whole project, which will seriously affect the normal use of the highway and cause a lot of waste of human, material and financial resources. Therefore, it is necessary for every highway technician to master the correct subgrade construction technology, ensure the quality of subgrade construction, and thus ensure the safety of highway pavement structure

Technical disclosure of cushion cap construction of an expressway

Foundation pit setting out: 1. First, determine the size of foundation pit excavation according to the size and burial depth of the bottom surface of the cushion cap, the hydrological conditions of the address, and the layout of machines and tools. 2. Determination of foundation pit slope line: ① measure and set the foundation pit bottom plane contour line to the ground according to the cushion cap and foundation pit bottom plane size; ② Cross section measurement shall be carried out along the four sides of the foundation pit plane contour line on the ground; ③ Determine the excavation edge

Technical disclosure of capping beam construction of an expressway

Shallow foundation pit construction 1. Foundation pit drainage: first dig a sump outside the foundation pit cushion cap, and then dig drainage ditches around to collect the water in the pit along the drainage ditch into the sump, pump the water in the sump out of the pit, and the drain pipe orifice should be 5m away from the edge of the foundation pit to prevent seepage back to the foundation pit, causing slope collapse. When pumping, a special person should be responsible for cleaning the sump. 24

Table of subgrade construction of expressway

This document is a table for subgrade construction of expressway. The content includes the construction form of subgrade works. The contents are detailed for reference.

Summary of highway subgrade construction technology

This data is a summary of highway subgrade construction technology, which has also made great progress in design and construction; Advanced survey and measurement methods are used to provide reliable technical data for highway subgrade design. The content is detailed and worth downloading.

Collection of technical disclosure for expressway construction

(1) Construction survey shall be carried out before commencement, including resurvey of traverse, centerline and elevation, recheck and addition of benchmark, survey and drawing of cross section. The accuracy of construction survey meets the requirements of Highway Survey Specification (JTJ061-99). The survey method and result data shall be signed and submitted to the supervising engineer. Construction can be carried out only after being approved by the supervising engineer.

Technical disclosure of expressway earthwork construction

Earth rock excavation, rock excavation, construction of filled embankment

Talking about the technical method of highway subgrade construction

From inter provincial expressways to rural projects, from national wholly-owned to local supporting facilities, from foreign loans to the current BOT form, the financing problem has been fundamentally solved, and highway construction has avoided becoming the bottleneck of economic development. Due to the rapid launch of a large number of projects and the lack of professionals and construction teams engaged in road and bridge construction

Technical code for construction of highway subgrade

Technical Specifications for Highway Subgrade (can be copied)

Technical disclosure of steel frame bridge construction of expressway

This bridge is located on the A ramp of G109 interchange in XXX section of XXX to XX expressway. The center stake number of the bridge is AK0+240, the starting stake number is AK0+466, and the ending stake number is AK5+014. The total length of the bridge is 1548m. The span combination is 4 × 40+(65+120+65)+4 × 40+(84+152+84)+（

Subgrade construction of expressway filled with sand

In order to ensure the filling quality and progress of the subgrade, two filling schemes are adopted for the filling of the test section. （1） Synchronous construction method of sand and clay. During the construction of this scheme, the sand and clay are always in a relatively horizontal state. In fact, the paving and rolling of sand and clay are synchronized. There are two different construction methods for simultaneous construction of sand and clay. The first is

Technical disclosure of highway digging pile construction

During construction, sufficient water pumps and rainproof facilities shall be provided. Temporary covers shall be set in each hole. Sundries shall not be stacked near the hole opening and vehicles shall be prohibited from passing to prevent the hole from collapsing. Electric leakage protection devices shall be installed for construction equipment. The power consumption for lighting in the hole shall not be higher than 36V.

Technical disclosure of highway water stabilized base construction

1. Project overview: the starting and ending stake numbers of this section are K127+660-K151+500, with a total length of 23.8km. The pavement base is designed as 4% cement stabilized crushed stone base, with a total area of 602154m2; 5% cement stabilized macadam base, 1122586 m2 in total

Instructions for Technical Disclosure of Expressway Construction

The whole line is designed according to the standard of four lane expressway, with subgrade width of 26m and design speed of 100km/h. Bridge design load class highway - Class I; The flood frequency of subgrade, bridge and culvert is 1/100, and that of super large bridge is 1/300; Driving width 2 × 2 × 3.75m; The full width of the bridge is 26m. Other indicators shall be in accordance with the requirements of the Ministry of Communications of the People's Republic of China

Technical disclosure of expressway construction in rainy season (Level II)

Construction principles, technical measures and foundation works in rainy season

Technical Scheme for Subgrade Earthwork Construction of Expressway

The preparation of technical scheme for subgrade earthwork excavation and protection construction of expressway is highly referential and representative, with rich and comprehensive contents

Technical scheme for subgrade blasting and cutting stonework blasting of an expressway

Technical scheme for subgrade blasting and cutting stonework blasting of an expressway Technical scheme for subgrade blasting and cutting stonework blasting of an expressway

Construction technical disclosure of pavement maintenance works of an expressway

G18 Rongcheng Urumqi Expressway starts from Rongcheng City, Weihai, and enters Hebei through Wendeng City, Yantai City, Weifang City, and Dongying City, with a total length of 528.9km in Shandong; It is an important part of the main framework of the "five longitudinal and four horizontal, one surrounding Shandong" highway in Shandong Province, and plays an important role in the major coastal cities of Jiaodong Peninsula and the port dredging channel of the northern port group of the peninsula, greatly driving

Construction technical scheme for subgrade protection works of expressway

TJ21 contract section starts from K175+184.147 to K183+100, with a total length of 7.9158km. It starts from Xuwu Village, Qiaotou Town, Yingde City, passes through Touwei Village, Xiangwei Village, Zhuzikeng Village, Dengwu Village, Laiwu Village, Xiahe Village, Qiaotou Town and ends at Wushi Village, Qiaotou Town. The forms of protection in this bid section mainly include planting grass by spraying in soil, herringbone skeleton and anchor rod

Construction Technical Scheme for Test Section of Stone filled Embankment of Expressway Subgrade

1. Through the construction of subgrade test section, a set of construction organization forms and mechanical equipment configuration methods suitable for the reasonable construction of subgrade filling geology and terrain in this section are explored and summarized. 2. Through on-site backfill rolling test, determine the loose paving thickness, compaction machinery model and combination, compaction speed, compaction times, settlement difference and other relevant parameters that meet the compaction quality control standard of rock fill embankment

Construction technical scheme for subgrade protection works of an expressway

TJ21 contract section starts from K175+184.147 to K183+100, with a total length of 7.9158km. It starts from Xuwu Village, Qiaotou Town, Yingde City, passes through Touwei Village, Xiangwei Village, Zhuzikeng Village, Dengwu Village, Laiwu Village, Xiahe Village, Qiaotou Town and ends at Wushi Village, Qiaotou Town. The forms of protection in this bid section mainly include planting grass by spraying in soil, herringbone skeleton and anchor rod

Technical disclosure scheme for construction of expressway overpass

The technical disclosure scheme for the construction of expressway overpass bridge, the cast-in-situ concrete of the overpass support, the middle span, is made of cast-in-situ inclined leg and box girder concrete by erecting a full hall bowl buckle support; A row of large steel pipes are erected on the side span. The steel pipe is laid with double I56b steel as the load-bearing beam in the transverse direction of the bridge. The load-bearing beam is laid with a longitudinal truss. The truss is made of materials above the 0 # bracket of Yanwan River Bridge. The truss is made of I25 steel

JTJ033 Technical Code for Construction of Highway Subgrade

This document is JTJ033 Technical Specification for Highway Subgrade Construction. It is clear and can be used for reference. Welcome to download it.

Technical Specifications for Construction of Highway Subgrade+Articles

This document is JTJ033-95 Technical Specification for Highway Subgrade Construction+Articles, which is detailed and can be used for reference

Technical Disclosure for Construction of Double Arch Tunnel of Baijing Expressway

Xx tunnel is located in K36+210~K36+510 of this section. The tunnel entrance and exit are within the scope of this bid section, and about 350m of construction access road needs to be built; There is no highway connection at the exit of the tunnel, and the traffic is inconvenient.

Q&A and summary of key points of highway subgrade construction technology

This data is a technical question and answer and summary of key points for highway subgrade construction. In order to avoid affecting the progress of subgrade construction, samples should be taken at least half a month before subgrade filling. Each soil should be representative when sampling. In case of any change in soil quality, the compaction test shall be conducted in time. The content is detailed and worth downloading.

Technical Specifications for Highway Subgrade Construction.doc

[Huizhou] Technical scheme for subgrade construction of an expressway

According to the Scheme Design, the composition of the subgrade cross section is: the original two-way six lane monolithic subgrade is 33.5m wide, the central separation width is 2.0m, the left side curb width is 2 × 0.75m, the carriageway width is 2 × 11.25m, the hard shoulder width is 2 × 3.0m (including the right side curb width of 2 × 0.5m), and the earth shoulder width is 2 × 0.75m.

Discussion on construction technology of expressway tunnel

At present, tunnel construction is three processes; This paper introduces the construction of tunnel engineering in the second process, improves the traditional technology with scientific and technological progress, and strives to reduce the project cost; Improve quality and work efficiency.

Sand filling construction of subgrade of an expressway

In the first phase of the expressway project, a 12km high fill road base fell on the ancient river channel on the south side of the Hutuo River and the yoke bend formed by the flood. There was a large amount of alluvial fine sand in the river channel, but there was no cohesive soil or other suitable filling materials in the short distance, which caused great difficulties in the subgrade filling. In addition to the permanent occupation of a large amount of land resources, the construction of expressways also requires the borrowing of soil for high fill subgrade

Construction Technology of a Tunnel on Shanghai Chengdu West Expressway

The entrance of the left tunnel is located on the curve of R=1000m (left deviation), and the exit is located on the curve of R=1000m (right deviation). A one-way slope with a longitudinal gradient of 1.849%. The entrance of the right tunnel is located on the curve of R=850m (left deviation), and the exit is located on the curve of R=1000m (right deviation), with a longitudinal gradient of 1.891%.

Highway subgrade construction disclosure record

This data is the disclosure record of highway subgrade construction, which is shared for download and reference.

Design of subgrade construction organization scheme for an expressway

For soft rock and strongly weathered rock, excavators are used for direct excavation; Deep hole millisecond bench blasting technology is adopted for secondary hard rock and hard rock, and down the hole drill and pneumatic drill are used for drilling

Technical guide for pavement construction of an expressway

Project overview A highway has a total length of 93km, subgrade width of 26m, and two-way four lane. There are 13 major bridges, 7 medium bridges, 25 small bridges, 84 passageway overpasses, 117 culverts, 5 interchanges, 19 separation overpasses, 6 toll stations, and 1 service area along the line. The earthwork quantities of the whole line are 15.1764 million

Technical disclosure for construction of static pressure prefabricated pipe piles of expressway

After entering the site, your team should make the following construction preparations: level the site, remove, uproot and tamp the soft soil layer; Excavate drainage ditches around the orifice, drain surface water in time, and erect canopy at the orifice; Install lifting equipment, arrange the slag outlet, and stack machine materials and tools reasonably so that they do not increase the pressure on the hole wall; If the wellhead stratum is soft, concrete wall protection shall be used at the orifice, with a height of about 2.0m; If the wellhead

Technical Disclosure of Bored Pile Construction of Zhengmin Expressway

Section N0.6 of Kaifeng Section of Zhengmin Expressway starts from K65+000 to K72+700, with a total length of 7.7km, a design subgrade width of 29m, and a clear bridge width of 2 × 13.217m. There are 1 large bridge, 1 medium bridge, 7 separated interchanges, and 1 interchange, including 202 friction piles with pile diameter of ф 150cm~ф 12