strawberry连续梁桥英文文献

2021年1月24日发(作者：axes)
Continuous Beam Filling Construction Of Suspension Work
Instructions

One
：
Purpose

Clear continuous beam suspension construction craft, operating essentials, irrigation
and quality standards, norms and guiding suspended irrigation construction work.

Two
：
Compilation basis

《
The
passenger
dedicated
line
railway
bridge
construction
quality
acceptance
temporary want to standard
》


《
The railroad bridge culvert construction remember PDL guidelines
》

《
The construction design documents
》


Three
：
Use scope and characteristics

Cantilever don't casting method suitable for high piers, long-span continuous girder,
the
continuous
steel
structure,
hole
by
navigation,
not
traffic
restrictions,
its
characteristic
is
without
establishing
a
landing
stents,
crane
and
transportation
machines without large, main construction equipment is hanging basket

Hanging basket is suspended poured main construction equipment, can be in already
drawing anchorage and joined with piers of whole beam body on mobile, each section
LiMo
reinforced,
binding,
pouring
the
concrete,
prestressed
tension
are
hanging
basket,
complete
this
section
in
construction,
the
cylons
before
hanging
basket
symmetrical each move one segment.

Hanging
basket
hanger
in
casting
beam
segment
generated
through
the
adjustment,
deformation
to
adjust
the
boom
height,
or
preloading
to
adjust
counterweight
adjustment

A
triangle
hanging
basket
bearing
system
framework,
diamond
frame,
since
the
anchor frame structure, etc.

Four
：

Cantilever segments casting construction method

(1)

The assembled hanging basket

Pier top beam section is completed, installation hanging basket. Assembles procedure
is as follows:

In 1 # period slide, spread slider.

After
installation,
balanced
beam
in
combined
beam
(including:
cables,
and
made
beam, girder with and tripods
【

flat cables and beam in flat couplet), total anchor
system.

Before installing inclined poles and beams and the flat on the ground, then al DiMo
system,
in
the
assembly
of
beam
in
before
hanging
on,
beams,
using
hoist
award
trochlear
group
DiMo
system
upgrade
in
place,
installed
the
boom
and
the
former
boom of the crane.

Inner and outer mold sliding beam system installation

(2)

Hanging basket experiment

Experiment aim
：

The measured hanging basket of elastic deformation and the elastic deformation value,
verify
the
actual
parameters
and
carrying
capacity,
ensure
the
safe
use
of
hanging
basket; Through the simulation test weights, eliminate assembles the tectonic elastic
deformation;
According
to
the
measured
data
calculated
in
a
suspension
hanging
basket
to
elegant
displacement,
irrigation
period
for
suspended
irrigation
period
elevation control provide reliable basis for construction.

Loading methods
：

Preload
testing,
in
order
to
make
inspection
of
the
carrying
capacity,
reduce
stent
hanging basket and eliminate the elastic deformation, ensure the quality of the casting
concrete beams. Loading ShaDai material use and test for the biggest load of design
load
foursquare
-
1.2
times.
Loading
time
according
to
the
design
requirements
for
level, not hold jose time per level not less than 10min.

Load order to cross from bearings in for last out. Load time after not less than 24h,
holding the don't measure under various load hanging basket deformation value. And
then host and unloading, and measured deformation.

Load order: floor - webs - roof - flange plate

Deformation measurements
：

Benchmark
elevation
in
pier
top
beam
section.
Respectively
at
the
bottom,
flange
plate
quasi-geoid
experiments.
Triangle
hanging
basket
with
vertical
stem
not
measure its set deformation plan, stretching quantity.

Experimental results:

Testing is completed, analyse the data. Obtained by linear regression analysis of the
relationship between the loading, deformation.
Which can be carried out each piece
section hanging basket to vertical displacement, provide reliable basis for construction
control.

(3)

Cantilever construction

Hanging basket through experiment, and obtain the consent of the build engineer after
the construction of the cantilever beam. Cantilever construction click order;

Lateral
for
mould
and
bottom-formwork
after
reinforcement
and
reinforced
positioning binding bottom frame.

Binding reinforcement and installation touch prestress tube.

Made with braces and lateral endometrium mould connection. Asher internal model
support and roof stents.

Binding reinforcement and the roof beam pipe and speech made end mode.

With
the
above
steps
synchronization,
installation
various
pre-setting
hole
up
and
down
the
embedment
parts
(the
position
error
less
than
mouth
plane
3mm,
vertical
muscle set a plate embedded).

Inspected
before
perfusion
beam
section
of
concrete,
cantilever
segments
when
pouring
the
concrete
construction,
design
symmetrical,
balance,
creating
dayu
unbalanced design allows values.

Concrete
proportions,
pouring
sequence
and
strictly
according
to
the
construction,
must
rammer,
beam
section
casting
process
operation
since
the
layered
casting
cantilever
back
vibration.
Using
plug-in,
must
not
touch
loss
vibratory
made
holes
pipeline and reinforced the skeleton.

(4)

The mobile hanging basket