CN1598154A

CN1598154A - Construction technology of suspensing truss crossing river

Info

Publication number: CN1598154A
Application number: CN 200410040709
Authority: CN
Inventors: 廖扬忠; 杨胜金; 邓永蛟; 李卫
Original assignee: Sichuan Petroleum Administration Bureau
Current assignee: CNPC Chuanqing Drilling Engineering Co Ltd
Priority date: 2004-09-20
Filing date: 2004-09-20
Publication date: 2005-03-23
Anticipated expiration: 2024-09-20
Also published as: CN1333136C

Abstract

A suspension crossover construction technology of cross-river truss. It uses in the construction of cross-river pipe-line belongs to process engineering field of petroleum natural gas pipe-line cross-river crossover construction. The invention builds manmade islands at the both sides of the river, and constructs cross-river truss which is straightly towed across the river by the gantry frame on the other side. And it arrives at the vertically derricking up location after cross movement. Then, the truss would be equipped onto the pier by the gantry frame. The invention needs not large barge and barge crane. Because straightly towed across the river, the cross-river truss would not drop into river because of vibrating.

Description

Cross the construction technology that river truss suspention is crossed over

Technical field: a kind of construction technology of crossing river truss suspention leap, be used for the construction that the large-scale petroleum natural gas is crossed the river pipeline, belong to petroleum natural gas pipeline and cross the large-scale leap construction technology technology field of crossing the river truss of river leap construction.

Background technology: in the construction project of petroleum gas long-distance transport pipes, each bar pipeline all can run into the engineering that the rivers pipeline is crossed over, therefore all to carry out the leap construction of river truss, narrow and the not anxious more or less freely solution in river of current of river surface, the river of crossing of multispan trussed construction is different from the suspension cable leap, when running into great rivers, the leap construction of crossing the river truss is just relatively more difficult, the construction technology of using mainly contains at present: the cabling construction technology, this construction technology need be made cabling Sarasota and gravity earth anchor by oneself, the opposite bank transportation condition is bad crossing over, and when not having available Sarasota and anchoring pier, is unfavorable for problems such as entering of main equipment with regard to existence; Transportation by driving technology: this technology can solve the difficult problem that the truss that crosses the river sends, but needs large vessel and have the primary condition of the crane barge of suitable crane capacity, and erects the vertical lifting portal frame on the water and also be difficult to realize; Trestle adds the technology of vertical lifting: to be the truss that will make on the bank be transported in the water between two bridge piers along the trestle that sets up this technology, in place with the vertical lifting of hanging device that is erected in advance on the bridge pier then, but a difficult problem is to set up supporting capacity to reach required tonnage and can resist the trestle that flood impacts and need great deal of steel, and being provided with of trestle supporting pile needs barge container to cooperate, and also has the navigation problem that influences.

The objective of the invention is the problem that exists according to above-mentioned prior art, adopt two sides to build a dam, made river truss scheme in place step by step, design a kind of river truss straight line of will crossing and be pulled through Jiang Houzai and vertically hang the construction technology of crossing river truss suspention leap that puts in place.

Summary of the invention: technology of the present invention is divided into several steps and carries out: fixing bridge pier, man-made island is built in the rivers two sides that need to cross over, in order not influence navigation, keep unimpeded between two bridge piers of main channel, assembled the river truss at a bank in river then, build truss traction Entada phaseoloides door frame at another bank in river, and installation traction power-equipment and cable wire, then, the Entada phaseoloides door frame straight line parallel traction that the river truss excessively that will assemble is earlier set up by the opposite bank is crossed the river, after laterally moving, arrive vertical lifting position, by being arranged on the straddle truck of crossing on the bridge pier truss is lifted on the bridge pier at last; Advantage of the present invention is: owing to be to assemble the river truss on man-made island, and will cross the river truss by the traction Entada phaseoloides door frame straight line that sets up specially and drag the river to go, so do not need barge container and crane barge, simultaneously owing to be that the straight line parallel traction is crossed the river, so, when crossing the river, cross the river truss and can not fall into danger in the river because of swing cause the river truss too greatly.

Marginal data:

Fig. 1 crosses river step schematic diagram for the present invention.

Specific implementation method: provide most preferred embodiment of the present invention below in conjunction with accompanying drawing: this large-scale leap construction technology of crossing the river truss is carried out according to the following steps, the first step is built man-made island 6 in the rivers two sides that upstream one side of fixing bridge pier need be crossed over, in order not influence navigation, the riverbed 8 between two bridge piers of main channel keeps unimpeded; Second step was assembled river truss 1 on the man-made island 6 that constructs, building the traction truss simultaneously on another bank man-made island in river crosses the portal frame 5 in river and traction power-equipment and cable wire is installed, assembly pulley on the Entada phaseoloides door frame 5 is the 5-5 assembly pulley, and effectively working rope is 10; The 3rd step was installed the traction rigging at river truss 1 front end of crossing that assembles, and the rear end is installed and hung the pygochord tool, and the bottom is provided with rolling bar 2; The traction wire rope pulley group 4 of the 4th step with opposite bank Entada phaseoloides door frame 5 was hooked on the traction rigging hook of river truss 1 front end, the slide tail is hung over hanging on the pygochord tool of rear end installation, start the traction power-equipment of portal frame 5 on opposite bank and the slide tail equipment of afterbody simultaneously, to cross river truss 1 straight line parallel traction and cross the river, cross in the process in river at traction, the power-equipment of traction and slide tail will be kept strokes, traction speed will be stablized, and the front end of crossing river truss 1 will prevent nose, the phenomenon of sticking up tail and swinging in running; The 5th step, having served as the river truss was pulled behind the river, the truss that adopts rolling bar will cross the river moves laterally to and reaches vertical lifting position, do not pressed for the both sides of the man-made island built and to stride by truss, riverbank by bowlder stone 7 or clump to be set on the both sides of man-made island, utilize the vertical lifting device 3 that sets in advance on bridge pier that truss lifting is in place at last.

Claims

1. cross the construction technology that river truss suspention is crossed over for one kind, it is characterized in that: the present invention is undertaken by following construction technology step:

The first step is built man-made island in one side two sides in the bridge pier upstream;

Second step was assembled the river truss on man-made island, build portal frame on another bank man-made island, and assembly pulley and power-equipment are installed;

The 3rd step was crossing river truss front end installation traction rigging, and the rear end is installed and hung the pygochord tool, and the bottom is provided with rolling bar;

The 4th step hung over the traction rigging that the traction wire rope pulley group of opposite bank Entada phaseoloides door frame was hooked on river truss front end, the slide tail is hung over hanging on the pygochord tool of rear end installation, start the traction power-equipment of opposite bank portal frame and the slide tail equipment of afterbody then simultaneously;

The 5th went on foot the river truss was pulled behind the river, and the truss that will cross the river by rolling bar moves laterally to the position of vertical lifting, and is with the vertical lifting device on the bridge pier that truss lifting is in place at last.

2. a kind of large-scale leap construction technology of crossing the river truss according to claim 1, its spy is: the assembly pulley of the setting on the described portal frame is the 5-5 assembly pulley, effectively working rope is 10.