DB43-T 2763-2023 基樁自平衡法靜載試驗用荷載箱通用技術(shù)要求

ICS

17.020CCS

43湖南 省 地 方標(biāo) 準(zhǔn)DB43/T

2763—2023基樁自平衡法靜載試驗用荷載箱通用技術(shù)要求GeneralTechnicalSpecificationforLoadCellofstaticloadingtestoffoundationpilewithself-balancedmethod2023

-

09

-

27

發(fā)布

2023

-

-

實施湖南省市場監(jiān)督管理局

發(fā)

布DB43/T

2763— 前言························································································································

Ⅲ1

·····················································································································

12

規(guī)范性引用文件······································································································13

術(shù)語和定義············································································································13.1 額定壓力·········································································································13.2 額定輸出推力···································································································14

·····················································································································

25

·····················································································································

26

·····················································································································

27

工作介質(zhì)···············································································································38

技術(shù)要求···············································································································38.1 外觀···············································································································38.2材料···············································································································48.3荷載箱性能······································································································49

試驗方法···············································································································59.1儀器設(shè)備·········································································································59.2 外觀···············································································································59.3材料···············································································································59.4 荷載箱性能試驗································································································

510 檢驗規(guī)則··············································································································710.1 檢驗分類

·······································································································710.2 檢驗項目

·······································································································710.3 檢驗要求

·······································································································710.4 判定··············································································································811 銘牌、包裝、運輸、儲存

························································································

811.1 銘牌··············································································································811.2 包裝··············································································································811.3 運輸··············································································································811.4 儲存··············································································································8DB43/T

2763— 本文件按照

GB/T

—《標(biāo)準(zhǔn)化工作導(dǎo)則 第

1

部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定起草。請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔(dān)識別專利的責(zé)任。本文件由湖南省市場監(jiān)督管理局提出并歸口。限公司、永祺科技檢測股份有限公司、浙江歐感巖土工程科技有限公司本文件主要起草人：陳斌、程彥、易亮、羅檢民、俞昊、汪曉豐、易教良、王雙雙

。IIIDB43/T

2763—IVDB43/T

2763—1

本文件規(guī)定了基樁自平衡法靜載試驗用荷載箱（以下簡稱荷載箱）的結(jié)構(gòu)、工作介質(zhì)、技術(shù)要求、試驗方法、檢驗規(guī)則等要求，描述了符號、分類、銘牌、包裝、運輸、儲存等內(nèi)容。本文件適用于基樁自平衡法靜載試驗用荷載箱的設(shè)計、開發(fā)、生產(chǎn)和測試。2

規(guī)范性引用文件文件。GB/T

優(yōu)質(zhì)碳素結(jié)構(gòu)鋼GB/T

碳素結(jié)構(gòu)鋼GB/T

吊環(huán)螺釘GB/T

緊固件機械性能螺栓、螺釘和螺柱GB/T

液壓氣動用

O

形橡膠密封圈 第

1

部分：尺寸系列及公差GB/T

液壓氣動用

O

形橡膠密封圈 第

2

部分：外觀質(zhì)量檢驗規(guī)范GB/T

9065 液壓軟管接頭GB/T

往復(fù)運動橡膠密封圈結(jié)構(gòu)尺寸系列

第

1

部分：單向密封橡膠密封圈GB/T

17395 無縫鋼管尺寸、外形、重量及允許偏差JB/T

8727 液壓軟管總成JB/ZQ

4264

形密封圈JB/ZQ

4265

形密封圈JG/T

鋼筋連接用灌漿套筒JGJ/T

403—2017建筑基樁自平衡靜載試驗技術(shù)規(guī)程JJG

—2012 液壓千斤頂檢定規(guī)程JJF（湘）

45—2020 荷載箱校準(zhǔn)規(guī)范JT/T

—2013 基樁自平衡法靜載試驗用荷載箱3

術(shù)語和定義下列術(shù)語和定義適用于本文件。3.1額定壓力 rated

荷載箱正常工作條件下允許輸入的最大壓力。3.2額定輸出推力 rated

DB43/T

2763—荷載箱（液壓缸）額定壓力下的輸出推力。4

下列符號適用于本文件。：液壓缸內(nèi)徑，單位為毫米（mm）。F：理論輸出推力，單位為千牛（kN）。F：實際輸出推力，單位為千牛（kN）。Fimax

：對檢定或校準(zhǔn)點進行

3

次測量的力值最大值，單位為千牛（kN）。Fimin

：對檢定或校準(zhǔn)點進行

3

次測量的力值最小值，單位為千牛（kN）。F

：對檢定或校準(zhǔn)點進行

3

次測量的力值平均值，單位為千牛（kN）。

：荷載箱在加載達到

1.2

倍額定輸出推力后，持荷

30

的壓力減小率。：對檢定或校準(zhǔn)點進行

3

次測量的壓力最大值，單位為兆帕（MPa）。

：對檢定或校準(zhǔn)點進行

3

次測量的壓力最小值，單位為兆帕（MPa）。

：對檢定或校準(zhǔn)點進行

3

次測量的壓力平均值，單位為兆帕（MPa）。

：額定壓力，單位為兆帕（MPa）。P：荷載箱壓力泄漏的最大值，單位為兆帕（）。：示值重復(fù)性。

：荷載箱負(fù)載效率。5

按荷載箱在基樁中位置，可分為樁間荷載箱和樁端荷載箱。6

荷載箱一般由液壓缸、上下連接板、上下位移桿、上下位移護管、位移絲、位移絲護管、分液管、進液管、連接螺栓、缸內(nèi)注漿管等組成，荷載箱結(jié)構(gòu)示意圖見圖

1。DB43/T

2763— 10 1112圖

1荷載箱結(jié)構(gòu)示意圖7

工作介質(zhì)工作介質(zhì)為抗磨液壓油或生活用水。8

技術(shù)要求8.1 外觀8.1.1 產(chǎn)品表面應(yīng)整潔，無鐵屑、浮銹、油污。8.1.2液壓缸表面（包括焊接處）不應(yīng)有裂紋。DB43/T

2763—8.1.3 上、下連接板切割面應(yīng)平滑、邊角打磨無毛刺、飛邊，鉆孔后應(yīng)倒角或打磨孔口無銳角。8.1.4 荷載箱附件焊接處焊縫應(yīng)均勻飽滿、連續(xù)、無氣孔夾渣、無漏焊和缺焊。8.1.5 液壓軟管連接應(yīng)有護套封閉保護，保護套采用點焊焊接牢固，無松動。8.2 材料8.2.1荷載箱總成連接螺栓均采用強度等級不低于

8.8

級的高強度螺栓。緊固件機械性能螺栓、螺釘和螺柱應(yīng)符合

GB/T

的規(guī)定。8.2.2 軟管接頭采用扣壓式，工作壓力為

，應(yīng)符合

GB/T

9065

和

JB/T

8727

的規(guī)定。8.2.3 荷載箱的液壓缸密封圈采用橡膠密封圈，尺寸系列及公差應(yīng)符合

GB/T

3452.1、JB/ZQ

4264

和JB/ZQ

4265

GB/T

3452.2

及

GB/T

的規(guī)定。8.2.4

Q235C

GB/T

的規(guī)定。8.2.5 荷載箱的液壓缸缸套和活塞采用

GB/T699

和

GB/T

17395

的規(guī)定。8.3 荷載箱性能8.3.1 計量性能荷載箱計量性能應(yīng)符合

—2017

附錄

A

的

A.0.1

的要求。8.3.2 荷載箱負(fù)載效率荷載箱的實際輸出推力與理論輸出推力值之比為荷載箱負(fù)載效率

，

值不應(yīng)小于

0.9。8.3.3 示值重復(fù)性荷載箱檢定或校準(zhǔn)示值重復(fù)性不應(yīng)大于

3％。8.3.4 荷載箱啟動壓力荷載箱空載啟動壓力應(yīng)小于額定壓力的

4％。8.3.5 荷載性能荷載箱在加載達到

30

min

5％等異?，F(xiàn)象。8.3.6 剛性連接件應(yīng)進行抗拉試驗，其力學(xué)性能應(yīng)符合

398

的規(guī)定。8.3.7 荷載箱有效行程不應(yīng)小于

100

mm。8.3.8 吊環(huán)螺釘

GB/T

的規(guī)定。DB43/T

2763—8.3.9 荷載箱附屬件計圖的要求。9

試驗方法9.1 儀器設(shè)備荷載箱和液壓缸試驗所用儀器及配套設(shè)備應(yīng)符合以下要求：a）

標(biāo)準(zhǔn)測力儀：準(zhǔn)確度等級不低于

0.5

級，其測量范圍應(yīng)與被檢荷載箱相適應(yīng)；b）

電液伺服萬能試驗機：準(zhǔn)確度等級不低于

1.0

級，其測量范圍應(yīng)與被檢荷載箱相適應(yīng)；c）

鋼直尺：測量范圍（0—300）mm，分度值

1.0

；d）

鋼卷尺：測量范圍（0—5000）mm，分度值

1.0

mm；e）

游標(biāo)卡尺：測量范圍（0—）mm，分度值

mm；f）

數(shù)字壓力計：測量范圍（0—70）MPa，準(zhǔn)確度等級：0.5

級；g）

精密壓力表：測量范圍（0—60）MPa，準(zhǔn)確度等級：0.4

級；h）

秒表：分辨力不低于

0.1

s；i）

固的反力架結(jié)構(gòu)在承受最大力值時無明顯的承壓板應(yīng)能完全覆蓋被檢荷載箱的全部液壓缸組。j）

液壓泵：其額定壓力應(yīng)不小于

；9.2 外觀產(chǎn)品外觀質(zhì)量，用目測方法檢測，應(yīng)符合

8.1

的要求。9.3 材料9.3.1 連接螺栓抗拉強度試驗，按

GB/T

3098.1

的方法進行。9.3.2 液壓軟管總成

％進行加壓檢驗，承受壓力應(yīng)符合

8.2.2

的要求。9.3.3 液壓缸密封圈采用

O

Y

形橡膠密封圈，其尺寸系列及公差應(yīng)符合

GB/T

及

GB/T10708.1

的規(guī)定；外觀質(zhì)量檢驗應(yīng)按

GB/T

3452.2

的規(guī)定進行。9.4 荷載箱性能試驗9.4.1 計量性能按照

JGJ/T

403—2017

A

的

A.0.1

的要求進行，應(yīng)符合

8.3.1

的要求。9.4.2 荷載箱負(fù)載效率荷載箱負(fù)載效率按式（1）計算：

iFiFl

·····························································（1）其中Fi

以檢定或校準(zhǔn)力值為準(zhǔn)，l

按式（2）計算：4

104

103

·················································（2）l

dy2Pn

DB43/T

2763—應(yīng)符合

8.3.2

的要求。9.4.3 示值重復(fù)性上讀數(shù)，按式（3）計算重復(fù)性

：R

P

PPi

100%

····················································（3）以荷載箱指示器的示值為依據(jù)，在標(biāo)準(zhǔn)測力儀或電液伺服萬能試驗機上讀數(shù)，按式（4）計算重復(fù)性

：R

F

FiFi

100%

··················································（4）

100%

100%

····················································（5）9.4.4 荷載箱啟動壓力應(yīng)符合

8.3.4

的要求。9.4.5 荷載性能行加載試驗，按荷載箱額定壓力的

20％、40％、％、80％、％、120％分六級等速加載，加載速度約

5

MPa/min，按式（5）計算，應(yīng)符合

8.3.5

的要求。PPn9.4.6 剛性連接件進行抗拉試驗，力學(xué)性能應(yīng)符合

8